Key to the species of Clitopilus in Costa Rica

  1. Basidiomata clitocyboid; pileus 2-5 cm broad; spores typically with (5-) 6 (-7) longitudinal ridges

.......................................................... Clitopilus griseobrunneus

  1. Basidiomata pleurotoid; pileus typically less than 1 cm broad, dimidiate or conchate; spores typically with 8-10 (-11) longitudinal ridges

.................................................... 2

2. Pileus and lamellae reddish or brownish red; context with abundant amorphous intercellular pigment bodies, these tissues becoming bright pink in 50% HCl mounts

.............................................................. Clitopilus rhodotrama

 

 

2. Pileus white or grayish brown; lamellae white or pale creamy, becoming pale pinkish with spore maturation; context lacking intercellular pigment bodies and the tissues remaining hyaline in 50% HCl mounts

...................................................... 3

3. Pileus grayish brown, often sulcate; dark brown plate-like encrustations present on hyphae of the pileipellis

............................. Clitopilus incrustatus var. incrustatus

 

3. Pileus white or sordid whitish, typically not sulcate; lacking encrustations on the hyphae

of the pileipellis

....................................................................................................... 4

4. With obvious, long projecting, filiform cheilocystidia

......................................................................... C. hobsonii var. cystidiosus

4. Lacking obvious, long projecting, filiform cheilocystidia

................................................................. Clitopilus hobsonii var. hobsonii