What You Should Know
Rhodocybe truncata is a species of fungus in the Entolomataceae family. It produces fruit bodies that are fleshy, medium-sized, and cream-colored when young. When fresh it appears quite 'dry' but when wet it becomes quite dark and almost looks like a different species. It can grow in single fruitbodies but often they fuse and look almost clumped.
The mushroom has a pleasant mealy scent, spicy and slightly aromatic, but can taste slightly overpowering when raw.
This species was also known as Rhodocybe truncata (Gillet) Sing. ex Bon in the past, but this was a mistake and this usage was illegitimate. The specimen was originally described as R. truncata (Schaeff.) Singer by Schäffer must have been something else.
Other names: Tan Pinkgill.
Clitopilus geminus Mushroom Identification
Ochre with pale pink tinges, turning browner with age; 3 to 10cm across; initially convex, flattening with a shallow umbo but retaining a downturned or slightly inturned margin; not hygrophanous; matt, not viscid; the cap margin is not striate.
Fairly crowded, adnate/sinuate with a small decurrent tooth; very pale buff with a pink tinge. Hymenial pseudocystidia and clamps
Cylindrical or slightly clavate at base; white and mealy near the apex then rose pink and fibrous, becoming white towards the base; 4 to 8cm long and 0.8 to 2cm in diameter; longitudinally fibrillose; no stem ring.
Isodiametrical (broadly ellipsoidal, angular), thin-walled with small irregular warts; 4.5-7 x 3-4.5μm.
Flesh pink to salmon pink.
Odor and Taste
Mealy odor (like wet flour) or fruity; oily/nutty taste.
Saprobic, usually in groups, on soil in scrubby grassland and woodlands, often with Stinging Nettles.
Fruiting late summer and autumn.
Entoloma clypeatum lacks the reddish tints on the cap and stem and has much larger spores.
Clitopilus geminus Taxonomy and Etymology
When in 1793 French mycologist Jean-Jacques Paulet (1740 - 1826) described this species he gave it the scientific (binomial) name Hypophyllum geminum. Elias Magnus Fries sanctioned the specific epithet in 1838, remaning the species as Agaricus geminus. The scientific name Rhodocybe gemina dates from a 1987 publication by Dutch mycologists Thomas W. Kuyper (b. 1954) and Machiel Evert Noordeloos (b. 1949).
The generic name Rhodocybe comes from ancient Greek words Rhodeos-, meaning pinkish, and -cybe, meaning head.
The specific epithet gemina is Latin for paired - presumably a reference to the fact that these mushrooms are rarely seen as singletons.
Clitopilus geminus Synonyms
Hebeloma truncatum (Schaeff.) P. Kumm., 1871
Tricholoma truncatum (Schaeff.) Quél., 1880
Gyrophila truncata (Schaeff.) Quél., 1886
Rhodopaxillus truncatus (Schaeff.) Maire, 1913
Clitopilus truncatus (Schaeff.) Kühner & Romagn., 1953
Hebelomatis truncatum (Schaeff.) Locq., 1979
Rhodocybe gemina (Paulet) Kuyper & Noordel., 1987
Hypophyllum geminum Paulet, 1793
Gyrophila gemina (Paulet) Quél., 1886
Tricholoma geminum (Paulet) Sacc., 1887
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