Description

Geastrum mirabile is a miniature earthstar that splits its outer wall into a star around a perched spore sac, and this liquid culture delivers verified living stock from a genus almost never seen in culture. Out-Grow's liquid culture syringe contains live, actively growing Geastrum mirabile mycelium in sterile nutrient solution.

No Geastrum species has been fruited reproducibly in artificial conditions, but the reason is instructive: the genus is saprotrophic, not mycorrhizal, and the obstacle is recreating the slowly developed forest floor microhabitat it fruits from, not a missing host tree. The mycelium itself can be maintained and studied on standard media.

Why Work With Geastrum mirabile?
Earthstars are among the most charismatic fungi on the forest floor, and living cultures of them are nearly nonexistent. G. mirabile stock supports developmental and ecological study of a spectacular fruiting mechanism, and offers the long-game experimentalist a fruiting puzzle built around litter beds and time rather than host trees.

Working Conditions:
Expand on MEA or PDA at 72 to 80 F. Expect fine, slow, pale growth. Fruiting attempts are a long-horizon project: aged litter and woody humus beds kept undisturbed are the closest analog to its natural microhabitat.

Key Characteristics of Geastrum mirabile:

• Ecology: Litter saprotroph of tropical and subtropical forest floors, fruiting as small star-form earthstars.
• Culture Behavior: Fine, slow, pale mycelial growth on standard media.
• Rarity Value: Living Geastrum cultures are almost never offered; a true collector's holding.

Taxonomy of Geastrum mirabile:

• Kingdom: Fungi
• Phylum: Basidiomycota
• Class: Agaricomycetes
• Order: Geastrales
• Family: Geastraceae
• Genus: Geastrum
• Species: Geastrum mirabile

Storage and Usage Tips:
Store your Geastrum mirabile liquid culture syringe in a cool, dark location and expand promptly onto fresh agar, keeping backup plates from the first transfer.