|Major Groups > Gilled Mushrooms > Pink-Spored > Pluteus > Pluteus admirabilis|
by Michael Kuo
For those of us who live in areas where finding a Pluteus usually means finding a boring, brown mushroom, Pluteus admirabilis is a welcome sight, quite admirably holding up the not-boring side of the genus. It is recognized as a Pluteus by its pinkish mature gills and spore print, its habitat on rotting wood, and its lack of a volva (separating it from potential confusion with Volvariella)--and among species of Pluteus, it is distinguished by its bright yellow cap and stem, and its smooth cap texture.
Ecology: Saprobic on decaying hardwood logs and stumps; growing alone or gregariously; summer and fall; widely distributed and thoroughly documented east of the Rocky Mountains--but I have also found it at high elevation in southwest Colorado, on unidentified wood in a spruce-fir-aspen forest, and one 1962 collection labeled Pluteus admirabilis, from Utah, can be found in the online records of the National Fungus Collection (BPI).
Cap: 1-3 cm; convex becoming broadly convex to flat, sometimes with a central bump; moist; smooth; the margin lined; bright yellow when young, dull yellow or brownish yellow in age.
Gills: Free from the stem; close; whitish to pale yellowish, becoming pinkish.
Stem: 3-6 cm long; 1-3 mm thick; equal; fragile; smooth; bright yellow; basal mycelium white.
Flesh: Insubstantial; pale to yellowish.
Odor and Taste: Not distinctive.
Spore Print: Pink to salmon.
Microscopic Features: Spores 5.5-7 x 4.5-6 µ; subglobose; smooth. Pleurocystidia mostly fusoid-ventricose; to about 60 x 18 µ; cheilocystidia similar, or clavate. Pileipellis hymeniform, with elements 18-30 µ wide.
REFERENCES: Peck, 1872. (Saccardo, 1887; Kauffman, 1918; Singer, 1956; Homola, 1972; Smith, Smith & Weber, 1979; Phillips, 1991/2005; Lincoff, 1992; Horn, Kay & Abel, 1993; Barron, 1999; McNeil, 2006; Miller & Miller, 2006.) Herb. Kuo 06150304, 07100303, 06040401, 08150709.
The European species Pluteus leoninus is similar, if not identical. Some North American authors use this name to represent a Pluteus that shares all the features of Pluteus admirabilis but has a white stem. The North American species Pluteus melleus and Pluteus chrysophlebius, if they are truly distinct, have duller yellow caps; the former has a pale yellow stem, while the latter has a white stem.
Further Online Information:
Pluteus admirabilis at Roger's Mushrooms
Cite this page as:
Kuo, M. (2004, December). Pluteus admirabilis. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/pluteus_admirabilis.html