Flexible Helvella Mushroom: 10g (0.35oz.) biologically dried mycelium on grain seeds, ready for growing outdoor in a non-sterile environment. Inedible decorative mushroom. TheÂ fruit bodyÂ of the fungus is grayish or olive-brown, saddle- or mitral-shaped and is attached only to the top of the stipe; it may be up to 3 cm (1.2Â in) wide. TheÂ stipeÂ is white, solid or filled with loosely stuffedÂ hyphae, has a smooth surface, and is up to 8 cm (3.1Â in) long by 1 cm (0.4Â in) thick. The odor and taste of this mushroom are not distinctive. 10g.