114 SECTION HYGROCYBE 



from the base, finally entirely carmine or cherry red, and with all parts 

 blackening. It has distinctly narrower spores than typical H. conicus. 

 Haller (1953) has described a new species, H. conico-palustris, which 

 is distinguished by a small, papillate, striate pileus, and blackish pseu- 

 docystidia on the sides of the lamellae. 



49 



Hygrophorus erinaceus Pat. sensu Petch 



Bull. Soc. Mycol. France 25: 10. 1909 



Hygrophorus conicus var. peradenyca Sacc, Syll. Fung. 5: 418. 1887. 

 Hygrocybe erinacea (Pat.) Singer, Sydowia 12: 225. 1958. 



Pileus up to 3 cm broad, conic with an acute umbo, then conic- 

 campanulate, pale smoke gray or barium yellow, streaked with black 

 fibrils, blackening throughout when touched. Context gray or yellow, 

 blackening, thin, soft, hygrophanous. 



Lamellae free, white, blackening, subdistant, broad, lamellulae 

 present. 



Stipe white to pale smoke gray, blackening, fibrillose, equal, hol- 

 low. 



Spores 10 X 5 /z when broadly ellipsoid to 7-6 fi when subglobose 

 on the same gill, white in deposit. Basidia 30-40 X 7-11 /x, 4-spored. 

 Gill trama parallel, their hyphae forming a sterile edge. 



Habit, Habitat, and Distribution — In bamboo plantation, Trini- 

 dad, September-October; and Mexico. 



Material Studied — trinddad: Dennis 72. 



Observations — Dennis ( 1953 ) indicates a relationship of this fun- 

 gus to H. conicus, as Saccardo had done; but the tendency to bear 

 subglobose spores indicates an approach to H. erinaceus Pat. Singer 

 (1958) has recently reported this species from Mexico. 



Notes on Dennis collection No. 72: Spores 6-10 X .5-7 ti, ellipsoid, 

 subglobose, globose, or broadly ellipsoid, smooth, yellowish in Melzer's 

 reagent. Basidia 28-40 X 8-10 /z, 1-, 2-, and 4-spored. Pleurocystidia 

 and cheilocystidia none. Gill trama parallel, hyphae 5-7 /x broad. Cuti- 

 cle not sharply differentiated, surface hyphae numerous, repent, semi- 

 repent, or somewhat erect, broad (6-18 ti), pale fuscous, with a few 

 clamp connections. Lactifers present in the pileus trama. 



50 



Hygrophorus calyptraeformis Berk. & Br. apud Berk. 

 Outl. Brit. Fungol., p. 202. 1860 



