species fungus family described new science named provided type collection found northwestern north_america los_angeles california british_columbia canada commonly miles pacific_coast mushrooms grow rotting wood especially wood chips garden landscaping caps mushrooms brown buff broadly convex flattened diameter white long thick species genus contains compounds consumed properties closely related differs lack cap margin taxonomy described new science received material collected seattle washington noted similar lacked cap margins characteristic species previous publications noted microscopic characters certain species highly variable account differences observed seattle material dna revealed base pair change internal regions segment molecular identify distinguish fungal species seattle collections difference addition readily differences deemed sufficient warrant describing taxon new species additional molecular studies published colleagues identified closely related years official description taxon known suspected species authors suggest color photograph popular actually depict mycologist suggested probably new newly imported species commonly called online community incorrect latin published scientific literature specific epithet honors collected original material provided impetus study allen collected type material november collected fungus times later seattle collections sent specialist initially thought overlapping spore size ranges description variable size depending substrate grow caps diameter range broadly convex flattened slight depression center cap margin straight slightly curved inward rarely slightly radial grooves moist specimens surface smooth sticky moist gelatinous cap cuticle wet slippery difficult collect caps change color depending moist pale orange brown brown moist dry yellowish buff gills attachment stipe initially cream pale gray brown dark purple spores mature cylindrical hollow stipe typically measures long thick base slightly thicker stipe covered white base connected thick white stipe surface smooth silky silky slender fibers color initially white slightly age base stipe white stained blue parts stain blue bruised handled young specimens white partial veil later disappears remains zone stipe colored brown spores odor taste mushroom similar ground flour spore prints dark brown violet shades spores thick walled elongated ellipsoid face view somewhat view typically measuring basidia spore bearing cells cylindrical spored long dimensions clamp connections present hyphae cheilocystidia cystidia gill edge abundant hyaline translucent thin walled shaped range narrow clubs narrow neck longer dimensions typically pleurocystidia found gill face common broadly club shaped point rounded tip end measure found stipe present variable shapes similar pleurocystidia mushrooms consumed properties roughly similar colleagues commonly sought mushroom hunters according golden gate park december hundreds looking wood chip landscaping similar species species appearance roughly similar usually distinguished differences morphology distribution european species var similar cap stipe generally slender closely related indistinguishable microscopic characteristics features cap maturity longer fruiting season late september april lacks ring zone stipe seen broader cap broad acute longer stipe growing season similar authors note australian similar including taxa suggest research required better understand species complex habitat distribution found northwestern north_america range extending british_columbia south los_angeles california common areas miles pacific_coast collected miles inland grow scattered groups rarely clusters woody debris wood chips landscaping favored include hardwood oak douglas fir fruiting occurs cold weather generally late september january species readily cultivated grain spawn material including wood chips
Psilocybe allenii