152 SECTION HYGROCYBE 



Lamellae adnate-decurrent, "Indian red," subdistant, medium 

 broad (2 mm). 



Stipe shading from pinkish-vinaceous at the apex through "Naples 

 yellow" to an ochraceous-buff base, equal, smooth, hollow. 



Basidia dimorphous, 4-spored, the larger 40-11 /x, the spores 

 12-14 X 8 /x; the smaller 30 X 5-6 fi, the spores 5-9 X 3-5 fi. Pleuro- 

 cystidia and cheilocystidia none. Gill trama parallel. Cuticle of thin- 

 walled hyphae, the cells 230-270 X 20 /x, filled with dark-purple sap. 



Habit, Habitat, and Distribution — On soil in woods, Trinidad, 

 October. 



Material Studied — trinidad: Dennis 111 (type). 



Observations — This variety differs from var. firmus in its purple 

 pileus, and from var. amethyst inns Corner in its smaller spores. 



Notes on the type: Basidia dimorphous, larger ones 38-46 X 7-9 /x, 

 4-spored, bearing spores 11-14 X 7-8 /x, smaller ones 30-33 X 5-6 /x, 4- 

 spored, bearing spores 5-8 X 3.5-5 /x, smaller spores more numerous 

 (4:1), all spores ellipsoid, smooth, yellowish in Melzer's reagent. 

 Pleurocystidia and cheilocystidia none. Gill trama parallel, hyphae 

 6-20 fx broad. Lactifers prevalent in gill trama, 2.5-4 /x broad. Cuticle 

 undifferentiated, surface hyphae numerous, erect or repent. Clamp 

 connections not found. 



78 



Hygrophorus firmus var. trinitensis Dennis 



Kew Bull. 2: 266. 1953 



Illustration: 



Dennis, Kew Bull. 2, fig. 11. 



Pileus 3-10 mm broad, convex, with a shallow umbilicus, scarlet 

 with a narrow yellow line around the margin, dry, silky, slightly 

 scurfy in the umbilicus in large specimens. Context concolorous, thin. 



Lamellae decurrent with a tooth, coral red, subdistant, broad, 

 equal. 



Stipe concolorous with the pileus except at the yellowish base, 

 long, slender, equal, dry, smooth, solid. 



Spores 6-11(13) X 3.5-6 /x, ellipsoid. Basidia 40 X 8 /x, 4-spored. 

 Pleurocystidia and cheilocystidia none. Gill trama of parallel hyphae. 



Habit, Habitat, and Distribution — On soil in woods, Trinidad, 

 August-October. 



Material Studied — trinidad: Dennis 124 (type, from Trinidad, 

 Oct. 5, 1949). 



Observations — The type was collected in Arena Forest, Trinidad, 



