Bleach Cup (Disciotis venosa)
Bleach Cup (Disciotis venosa)
Bleach Cup (Disciotis venosa) is a large spring-fruiting cup fungus native to temperate woodlands across Europe and North America, producing brown disc-shaped fruiting bodies up to 15 cm across. It is immediately identifiable by its unmistakable chlorine-like odor — one of the strongest and most distinctive smells of any wild fungus — which fades significantly on cooking. It belongs to the same family as morels and emerges at a similar time of year, often found in the same woodland habitats.
Disciotis venosa (Pers.) Arnould (1893) · also known as Veiny Cup Fungus, Cup Morel · MycoBank MB#102531 · Family Morchellaceae · Order Pezizales
Bleach Cup (Disciotis venosa) is a spring ascomycete that appears during morel season in temperate hardwood and mixed woodlands across Europe and North America. Despite looking like a large brown cup fungus, it sits phylogenetically within the Morchellaceae — the morel family — rather than among the typical cup fungi, a placement that has been consistently supported by molecular studies since the early phylogenetics era. Its signature bleach-like odor, produced when fresh tissue is broken, is strong enough to have become its primary common name in English field guides, though the specific volatile compound responsible has never been identified in published analytical chemistry.
Interested in this species? Out-Grow carries a liquid culture.
Bleach Cup (Disciotis venosa) Liquid CultureWhat Is Bleach Cup (Disciotis venosa)?
Bleach Cup (Disciotis venosa) is a member of the Pezizales — the operculate discomycetes (cup fungi that open their asci with a lid-like structure to release spores). Within that order, it belongs to the Morchellaceae, the family that contains morels (Morchella spp.) and false morels (Gyromitra spp.). That family placement is phylogenetically well-supported and scientifically important: Bleach Cup (Disciotis venosa) is not simply a generic brown cup fungus but a genuine morel relative whose evolutionary history ties it to one of the most recognized fungal groups in the world.
The genus name Disciotis refers to the flattened disc-like form of the mature apothecium (the spore-bearing fruiting body in cup fungi). The species epithet venosa — from the Latin for “veined” — describes the network of ridges and folds that develops across the fertile inner surface as the fruitbody matures. Young specimens are more distinctly cup-shaped; as they age they flatten and open into broad, irregular discs up to 20 cm across, with the veining becoming progressively more pronounced near the center. The outer sterile surface remains pale — whitish to tan — contrasting with the darker brown inner surface.
A morel relative disguised as a cup fungus. Bleach Cup (Disciotis venosa) is one of the most striking examples of morphological mismatch with phylogenetic placement in the fungi. It looks like a Peziza or Discina, but molecular analysis consistently places it inside the Morchellaceae, the family of morels. That evolutionary proximity is visible in spore and ascus traits but not in gross fruitbody architecture — the cup or disc form is a convergent shape, not a marker of close relationship to other brown cups.
The ecology of Bleach Cup (Disciotis venosa) remains genuinely uncertain. Field guides variously describe it as saprotrophic (decomposing organic matter in soil), possibly saprotrophic, or potentially facultatively mycorrhizal (partly dependent on living tree associations). That ambiguity is not a minor detail: it is the central question that determines whether and how the species can be reliably fruited from culture, and no controlled experiment has resolved it for this species specifically. The fruitbodies emerge from soil in spring woodland habitats — hardwood and mixed forests, alluvial and floodplain woods, moist banks and slopes — often appearing alongside morels during the same brief seasonal window.
The name “Cup Morel” also circulates for Bleach Cup (Disciotis venosa), particularly among North American hobbyist cultivators, and reflects the morel family affinity accurately. However, the dossier underlying this guide treats that name with caution: it is not universally standardized, risks confusion with true Morchella species, and is less consistently indexed than the combination of “Bleach Cup” and the Latin binomial.
How Is Bleach Cup (Disciotis venosa) Classified?
The accepted name is Disciotis venosa (Pers.) Arnould, first described by Christiaan Hendrik Persoon as Peziza venosa in 1801 — a placement in the historically catch-all genus Peziza that was standard practice for cup fungi at the time. Arnould transferred it to the genus Disciotis in 1893, which is the combination recognized in MycoBank (MB#102531), Index Fungorum, Species Fungorum, GBIF, and NCBI taxonomy today.
| Rank | Name |
|---|---|
| Kingdom | Fungi |
| Phylum | Ascomycota |
| Class | Pezizomycetes |
| Order | Pezizales |
| Family | Morchellaceae |
| Genus | Disciotis Boud. |
| Species | Disciotis venosa (Pers.) Arnould (1893) |
| Basionym | Peziza venosa Pers. (1801) |
| MycoBank ID | MB#102531 |
| NCBI TaxID | 44606 |
| JGI MycoCosm | Disven1 (NRRL 24433 — 1KFG / CSP1974) |
Author attribution note: Some secondary sources and older database records credit the combination to Boudier rather than Arnould, appearing as Disciotis venosa (Pers.) Boud. This is a documented nomenclatural nuisance. The correct modern attribution as accepted in MycoBank, Index Fungorum, and Species Fungorum is (Pers.) Arnould. The Boudier attribution persists in some biodiversity databases through historical carryover and should not be treated as an alternative accepted name.
The synonym list for Bleach Cup (Disciotis venosa) reflects the same pattern of 19th-century genus-shuffling seen across cup fungi: Peziza venosa, Discina venosa, Aleuria venosa, Humaria venosa, Plicaria reticulata, Peziza reticulata, Discina reticulata, Aleuria reticulata, and Acetabula venosa all appear in synonymy. Names containing reticulata (meaning “netted”) reflect older interpretations of the veined forms as distinct taxa, later collapsed into D. venosa.
The deeper taxonomic uncertainty does not lie in the accepted binomial but in the species concept itself. Modern authors note that “D. venosa” may conceal more than one phylogenetic species across continents — the 2015 inland Pacific Northwest study found that North American mitospore haplotypes did not collapse cleanly with European D. venosa collections. The binomial is stable; whether it represents one species or a cryptic complex is still an open question awaiting denser multilocus sampling.
Reference sequences: the historical backbone uses SSU U42643 and LSU U42670 (voucher NRRL 22213). Later AFTOL-era multilocus analyses link AFTOL-ID 179 / OSC-100045 to AY544667, DQ471060, and DQ470892. A partial 28S/LSU sequence KX008356.1 from voucher O88531 is directly searchable on NCBI. The JGI MycoCosm genome resource Disven1, based on NRRL 24433, was produced within the 1000 Fungal Genomes project — making Bleach Cup (Disciotis venosa) one of very few species in its genus with a sequenced genome.
How Do You Identify Bleach Cup (Disciotis venosa)?
Bleach Cup (Disciotis venosa) in a classic mature specimen is one of the easier spring cup fungi to identify: a large brown disc on the forest floor in morel season, strongly veined in the center, pale on the underside, and releasing a sharp chlorine-like smell when broken. The combination of those four characters — size, veining, pale exterior, bleach odor — is not matched by any other common spring cup fungus. The challenge is that young or atypical specimens may not yet show strong veining, and odor can be variable, particularly in North American material.
Developmental change matters for field identification. Young fruitbodies are more distinctly cup-shaped with an inrolled margin and may lack the characteristic veining; the bleach odor is the most reliable early indicator. As the fruitbody matures it flattens, the margin may tear irregularly, and the central folding becomes progressively more pronounced. Very old specimens can become so flattened and discolored that they merge visually with leaf litter and resemble an irregular dark disc — at which point confident macroscopic identification becomes difficult.
Lookalike Species
Discina ancilis / Gyromitra ancilis
The most consistently cited lookalike. Usually grows on dead conifer wood rather than from soil directly, and lacks the bleach/chlorine odor. Fruitbody tends to be more distinctly saddle-shaped or brain-folded rather than disc-like. Classification has shifted between Discina and Gyromitra complexes across different sources. Contains gyromitrin (a false-morel toxin precursor) in some closely related species — correct identification matters.
Brown Peziza species
Multiple brown Peziza species can look similar macroscopically, particularly when Bleach Cup (Disciotis venosa) is young and not yet strongly veined. Microscopy is the most reliable separator: D. venosa has large smooth spores lacking obvious ornamentation, while many Peziza species have ornamented spores or different ascus dimensions. Ecology and odor help narrow the field.
Verpa species
A PMC poisoning review notes that some Verpa species can show 99% ITS similarity with Disciotis venosa, highlighting a genuine molecular identification pitfall. Morphologically, Verpa species have a distinct cap attached at the apex to a stout stem — very different gross morphology — but the molecular overlap is a reminder that ITS-only sequences cannot always be trusted for this group.
Morchella spp. (True Morels)
True morels have a distinctive honeycomb-pitted cap on a hollow stipe and do not resemble a mature Bleach Cup (Disciotis venosa) except in fruiting season and general habitat. The family relationship is phylogenetic, not morphological. Any forager who knows morels will not confuse them with a flat brown disc.
Leaf Litter Confusion
Flattened old specimens of Bleach Cup (Disciotis venosa) can blend into dark, moist leaf litter on the forest floor. The bleach odor remains useful even when visual identification is difficult. Habitat and season — spring, moist woodland soil, often near ash, alder, or oak — provide additional context.
Where Does Bleach Cup (Disciotis venosa) Grow?
Bleach Cup (Disciotis venosa) has a Holarctic distribution: it is documented across Europe and North America, with additional records from Turkey and India cited in secondary literature. GBIF shows approximately 2,744 georeferenced records with a broad occurrence footprint across European and North American temperate zones. The species occurs in temperate woodland soils, with a consistent preference for moist, shaded, nutrient-rich ground — particularly alluvial and floodplain woodlands, banks and slopes, and rich deciduous habitats.
| Region | Status | Primary Habitat | Season |
|---|---|---|---|
| Europe (broad) | Widespread; locally common | Hardwood and mixed woodland; floodplain and alluvial forest; under ash, alder, oak, maple | March–May |
| Great Britain | Least Concern (GB Red List) | Moist deciduous woodland; calcareous soils | April–May |
| Czech Republic | Endangered (EN) nationally | Rich woodland soils; riparian habitats | April–May |
| Eastern North America | Present; concurrent with morel season | Hardwood forest floor; moist disturbed ground; riparian areas | April–June |
| Pacific Northwest (North America) | Present; inland riparian habitats | Riparian woodland; mitospore stages documented in autumn from same locations | Spring; mitospore stage possibly autumn |
| Turkey | Reported Critically Endangered | Temperate woodland; status requires verification from primary national database | Spring |
A recurring microhabitat theme across sources is preference for sheltered, sloped, or banked ground where moisture is retained without waterlogging — the same conditions favored by morels. The species is associated with calcareous or nutrient-rich soils in several European accounts, and orchards, gardens, and disturbed woodland edges are also noted in the literature. There is no global IUCN assessment for Bleach Cup (Disciotis venosa), though regional assessments range from Least Concern (Great Britain) to Critically Endangered (Turkey, unverified from primary national source), suggesting genuinely variable abundance across its range.
Can You Cultivate Bleach Cup (Disciotis venosa)?
The honest answer is: the mycelium can be grown in culture, but no validated, reproducible indoor fruiting protocol has been published for Bleach Cup (Disciotis venosa) in the peer-reviewed literature reviewed for this guide. That is an important distinction. The liquid culture is a legitimate product for agar work, culture preservation, biomass production, and experimental outdoor inoculation — but it is not a conventional mushroom cultivation starter in the way an oyster or shiitake liquid culture is.
Why fruiting remains undocumented: Two obstacles stand between cultured mycelium and fruiting bodies for Bleach Cup (Disciotis venosa). First, ecological mode is unresolved: if the species is strictly saprotrophic, fruiting may simply be underexplored; if it is conditionally mycorrhizal or dependent on specific soil microbiome partners, pure-culture production may stop at mycelial growth without the biological triggers needed for apothecium formation. Second, the species concept itself may be broader than one phylogenetic species — North American and European strains appear to differ genetically, which means cultivation behavior documented for one population may not generalize.
What the Culture Looks Like
Out-Grow's house culture observations — labeled here as vendor notes rather than published species biology — report that the mycelium appears white to off-white with a thin to moderately cottony texture and limited aerial hyphae. Colony growth colonizes a 100 mm agar plate in approximately 10–21 days at 50–64°F (10–18°C). That implies a radial growth rate in the range of roughly 5–10 mm/day under those conditions — a back-calculated estimate from vendor timing, not a directly published measurement. No peer-reviewed paper with formal colony growth curves, pH optima, or media comparisons for this species was located.
Separately, an ultrastructural study confirmed that mycelium can be isolated directly from fruiting body tissue and maintained as living hyphal culture material for cell-biological research, independently validating that the species is culturable at the hyphal stage. The 2015 Pacific Northwest study also established mitospore-forming cultures and linked them molecularly to spring-fruiting Disciotis cf. venosa fruitbodies — showing that the cultured phase is not merely a commercial convenience but likely a real part of the species’ natural life cycle.
Experimental Pathways
Agar Expansion
The primary practical use. Transfer liquid culture to MMN or MEA agar plates, confirm clean morphology, and build a culture library. White to off-white cottony growth is expected. Monitor closely for bacterial contamination and faster-growing molds, which are difficult to detect early in thin, low-aerial mycelium.
Grain Inoculation
Grain spawn production (sterilized rye, wheat, or oat) is a plausible laboratory step based on the species’ morel-family affinity and general Pezizales culture biology. No controlled yield data or verified colonization protocol specific to this species exists in the published literature. Treat as an experimental step.
Outdoor Soil Inoculation
The most biologically motivated application. Inoculate rich, moist woodland soil or prepared beds near suitable hardwood trees (ash, alder, oak, maple) in the manner used for morel bed inoculation. There is no published proof of a reproducible outdoor fruiting pathway for this species, but the ecology strongly suggests soil association is essential. Long-term experimental work.
Research & Biomass
Mycelial biomass production in submerged or agar culture for cell biology, microscopy, ultrastructure study, or metabolite investigation is well-supported by the existing literature. The Woronin body ultrastructure paper and the mitospore life-cycle study both relied on cultured material. This is the strongest evidence-based use case.
Bleach Cup Liquid Culture — What It Contains and How to Use It
Out-Grow’s Bleach Cup (Disciotis venosa) liquid culture contains viable mycelium of this morel-family ascomycete in sterile nutrient solution. The most defensible uses are agar expansion for culture preservation and microscopic study; grain inoculation as an exploratory step toward experimental outdoor beds; soil or woodland inoculation trials designed to test environmental establishment; and mycelial biomass production for research on a species that currently lacks any published cultivation protocol.
What the liquid culture is not for: standard indoor fruiting on substrate blocks. No validated method for producing Bleach Cup (Disciotis venosa) apothecia from indoor spawn runs or substrate bags has been documented in the peer-reviewed literature. Customers exploring this species should approach it with the mindset of a researcher or experimental cultivator, not a production grower. The life-cycle complexity documented in the Pacific Northwest study — where distinct mitospore and meiospore stages were found at the same sites across seasons — suggests the biology rewards patient, long-term observation.
Store at 35–45°F and use within 4–6 months. Confirm cleanliness on agar before expanding to any substrate. The thin, slow-growing mycelium is more vulnerable to contamination by fast-growing saprotrophic competitors than typical cultivated species.
What Bioactive Compounds Does Bleach Cup (Disciotis venosa) Contain?
Species-specific chemistry for Bleach Cup (Disciotis venosa) is largely uncharacterized in the accessible peer-reviewed literature. No primary analytical chemistry paper was located that isolated named secondary metabolites, quantified polysaccharides, or reported antioxidant, antimicrobial, antitumor, or immunological assay results from D. venosa fruitbodies, mycelium, or culture filtrate. This section is intentionally short because inflating it with extrapolated data from other fungi would not serve the reader honestly.
Bleach/Chlorine Volatile
Research GapThe most famous chemical character of the species is its chlorine-like odor when fresh tissue is broken. This is a robust, repeatedly documented field observation. However, no primary analytical chemistry source was found that identifies the responsible volatile compound or pathway in D. venosa specifically. The odor is real; its molecular identity in this species is not published in the literature reviewed here.
Polysaccharides
UncharacterizedNo quantified polysaccharide data — no β-glucan content, no structural characterization, no immunological activity data — was found for Bleach Cup (Disciotis venosa) in the reviewed literature. General fungal polysaccharide chemistry cannot be applied to this species without species-specific data.
Terpenoids, Phenolics, Alkaloids
UncharacterizedNo terpenoid, phenolic, alkaloid, sterol, or peptide data was located for this species. No MIC, IC₅₀, DPPH, FRAP, or equivalent bioactivity values attributable to D. venosa were found. Chemistry in this species is a genuine and significant research gap.
Potential Gyromitrin-Related Compounds
Not DocumentedBecause Bleach Cup (Disciotis venosa) is in the Morchellaceae alongside false morels that produce gyromitrin (a heat-volatile toxin precursor), the question of whether related hydrazine chemistry exists in Disciotis is biologically reasonable. No gyromitrin or related compound has been documented in D. venosa, but this absence of documentation is not the same as confirmed absence. It is a research gap rather than a clean bill of safety.
Is Bleach Cup (Disciotis venosa) Safe to Eat?
Bleach Cup (Disciotis venosa) has a documented culinary history in parts of Europe and North America as an edible spring wild mushroom, with consistent notes that cooking reduces or eliminates the chlorine-like odor. No species-specific toxin has been characterized in the published literature, and no well-documented clinical poisoning series was found in the reviewed sources. However, the thin evidence base means this safety picture requires careful qualification.
A teaching document from the University of Texas mycology program specifically lists Disciotis venosa among fungi reported as toxic when eaten raw, while also noting that no toxin had been isolated. That pairing — reported raw toxicity without characterized toxin chemistry — is the honest state of knowledge. Cooking is not merely a precaution but an essential preparation step, and confident blanket edibility claims are not supported by the evidence available.
Practical safety guidance: Cook thoroughly before any consumption. Do not eat raw. The species can be confused with other spring cup fungi, some of which (certain Gyromitra and Discina relatives) do carry toxicological concerns. Correct identification — confirmed bleach odor, veined brown disc, pale exterior, spring timing in appropriate woodland habitat — is essential before any culinary use. No drug interaction data, contraindication information, or sensitivity profiles specific to this species were found in the reviewed literature.
The bleach-like odor — the species’ defining trait — disperses substantially on cooking, leaving a milder flavor that some European foragers describe as pleasant. Nordic foraging sources note it as an ingredient in spring woodland cooking. However, this culinary tradition should be understood as a regional food practice rather than a well-studied edibility endorsement: species-specific food-safety data, allergenicity studies, and bioavailability data are all absent from the literature reviewed here.
What Makes Bleach Cup (Disciotis venosa) Remarkable?
Bleach Cup (Disciotis venosa) rewards close attention — a handful of genuinely distinctive biological facts set it apart from most other cup fungi, and several open research questions make it an unusually interesting subject for anyone working at the intersection of mycology and culture biology.
A Cup Fungus That Is Actually a Morel Relative
One of the clearest examples of phylogenetic surprise in the fungi: Bleach Cup (Disciotis venosa) looks like a Peziza or Discina, but molecular phylogenetics consistently places it inside the Morchellaceae — the family of morels and false morels. Hansen and Pfister’s synthesis recovered a strongly supported Morchellaceae–Discinaceae clade as sister to the Helvellaceae within Pezizales. The cup or disc shape is morphologically convergent; the evolutionary relationship is with wrinkled morels and brain-shaped false morels, not with the other brown cups growing nearby in spring.
A Life Cycle with a Hidden Autumn Stage
The 2015 inland Pacific Northwest study (Carris et al., published in Mycologia) linked autumn Costantinella-like mitospore colonies to spring-fruiting Pezizales using ITS, RPB1, RPB2, TEF1-α, and LSU D1–D2 sequences — and Disciotis cf. venosa was among the taxa confirmed. This means the species likely spends more of its life as an inconspicuous asexual or mycelial form than spring field guides suggest. For cultivation, this finding is important: it validates that the cultured mycelial phase is biologically real and not a dead end, and suggests a potential role for autumn inoculation strategies that could connect to spring fruiting.
A Sequenced Genome — Rare for Its Genus
Bleach Cup (Disciotis venosa) has a JGI MycoCosm genome resource — Disven1, based on NRRL 24433 — produced within the 1000 Fungal Genomes project (1KFG / CSP1974). This makes it one of the best-resourced species in its genus from a molecular standpoint, despite the near-complete absence of cultivation and chemistry literature. The genome was sequenced specifically to help clarify ecological and evolutionary differences within Morchellaceae. No species in the Disciotis genus had a published whole-genome sequence before this project.
Elongated Woronin Bodies — An Ultrastructural Oddity
An ultrastructural study documented elongated, rectangular Woronin bodies in D. venosa mycelium and sporocarp-forming hyphae — contrasting with the more typical globose Woronin bodies found in other Pezizalean comparators. Woronin bodies are organelles that plug septal pores to protect the mycelium from cytoplasmic loss after injury. The unusual elongated form in D. venosa is a niche cell-biology detail, but it is documented from primary literature and representative of the kind of obscure morphological character that makes the species taxonomically distinctive at the microscopic level.
The Bleach Odor Mystery
The chlorine-like odor that names this species is among the most immediately recognizable field characters of any spring fungus in its range — distinctive enough to serve as a primary identification character and generate a common name. Yet no primary analytical chemistry paper has identified the responsible volatile compound in D. venosa. This is a genuine and surprising research gap: a famous, reliable, pungent, reproducible chemical signal from a sequenced organism, and the molecule causing it remains unpublished. It represents an unusually clean research opportunity for anyone with GC-MS access and spring woodland access at the same time.
Probable Cryptic Species Complex
Modern authors explicitly note that D. venosa as currently circumscribed may conceal more than one phylogenetic species across continents. The 2015 Pacific Northwest study found that North American mitospore isolates and meiospore stages had different haplotypes and differed from European D. venosa collections. This means that what fungus books have been calling “Bleach Cup” across North America and Europe for 200 years may be a complex of related but distinct species — awaiting the kind of dense multilocus sampling that has already split the morel genus Morchella into dozens of recognized species.
Frequently Asked Questions About Bleach Cup (Disciotis venosa)
Why does Bleach Cup smell like bleach?
The chlorine or bleach-like odor released when fresh Bleach Cup (Disciotis venosa) tissue is broken is its most famous and reliable field character — strong enough that it became the primary English common name. The exact volatile compound responsible has never been identified in published analytical chemistry for this species specifically. The odor is well-documented as a field observation; its molecular origin is a genuine and unresolved research gap. The smell disperses substantially during cooking.
Is Bleach Cup (Disciotis venosa) the same as a morel?
Bleach Cup (Disciotis venosa) is not a morel, but it is a morel relative. Molecular phylogenetics consistently places it within the Morchellaceae — the same family as true morels (Morchella) and false morels (Gyromitra) — despite looking nothing like a morel in the field. The cup or disc shape is morphologically convergent with other spring cup fungi; the evolutionary relationship is with the honeycomb-capped morels. This is why it is sometimes called “Cup Morel,” though that name risks confusion with actual Morchella species.
Where does Bleach Cup (Disciotis venosa) grow?
Bleach Cup (Disciotis venosa) grows from the ground in temperate hardwood and mixed woodlands across Europe and North America, with additional records from Turkey and India. It consistently favors moist, nutrient-rich habitats — alluvial and floodplain forests, mossy banks, slopes, and sheltered spots under ash, alder, oak, and maple. It fruits in early to mid-spring, typically during morel season (March–May in Europe; April–June in North America).
Can you cultivate Bleach Cup (Disciotis venosa)?
The mycelium can be grown in axenic culture on agar and in liquid medium, and mycelial cultures are biologically validated by multiple published studies. However, no reproducible indoor fruiting protocol has been documented in the peer-reviewed literature. The ecological mode of the species — whether saprotrophic, conditionally mycorrhizal, or microbiome-dependent — remains unresolved, and that uncertainty likely underlies the lack of a standard fruiting pathway. Outdoor soil inoculation near suitable hardwood trees is the most biologically plausible experimental route to apothecium production.
Is Bleach Cup (Disciotis venosa) safe to eat?
Bleach Cup (Disciotis venosa) has a culinary history as an edible spring mushroom in parts of Europe and North America, where it is eaten after cooking. No species-specific toxin has been chemically characterized, but it has been reported as potentially toxic when eaten raw. Thorough cooking is essential, not optional. The species can be confused with some spring cup fungi in the Gyromitra and Discina complexes that carry genuine toxicological concerns, making correct identification important before any culinary use. No drug interaction data exists for this species.
How is Bleach Cup (Disciotis venosa) used as a liquid culture?
Out-Grow’s Bleach Cup (Disciotis venosa) liquid culture is best suited for agar plate expansion and culture preservation, microscopy and morphological study, grain inoculation as an exploratory step toward outdoor bed preparation, and mycelial biomass production for research purposes. It is not a conventional cultivation starter: no validated protocol for fruiting the species from indoor spawn runs has been published. Approach it as a research and experimental product. Store at 35–45°F and confirm cleanliness on agar before expanding to any substrate.
Also available as a culture plate from Out-Grow.
Bleach Cup (Disciotis venosa) Culture Plate