56 SECTION CAMAROPHYLLOPSIS 



merely a 2-spored form of the species. In a Tennessee collection 

 (Hesler 14469), all basidia observed were 2-spored, none 4-spored. In 

 Hesler 16574, the number of 2- and 4-spored basidia are about equal, 

 and the spores measure 8-11 X 5-7 /x. In Hesler 10938, the 4-spored 

 basidia predominate, and the spores measure 7.5-12 X 4.5-5.5(7) xx; 

 but smaller and larger spores are about equal in numbers. In Hesler 

 10095, 2-spored basidia predominate and the spores are 7-9 X 4—5.5 /x. 

 It appears then that not all the large spores are borne on 2-spored 

 basidia. In Hesler 14469, however, only 2-spored basidia were ob- 

 served, and the spores were 9-12 X 5-6 /x. 



From Peck's collection we have studied the material marked 

 "types." The specimen-box contains both the Croghan and Copake col- 

 lections; when studied these were found to be identical. Notes on the 

 Croghan collection: Spores 8-11(12) X 4.5-6 fx, the majority 8-9 X 

 4.5-5 /x, ellipsoid, smooth, yellowish in Melzer's reagent. Basidia 

 37-49 X 6-7(8) /x, 2- and 4-spored, the majority 2-spored. Pleuro- 

 cystidia and cheilocystidia none. Gill trama interwoven. Cuticle of ap- 

 pressed hyphae which are only slightly gelatinous. Clamp connections 

 present on the cuticular hyphae. 



Singer ( 1951 ) and others have raised the question as to whether 

 H. borealis is different from H. niveus. The latter species, however, is 

 viscid from the gelatinous cuticle. 



Dennis (1953) has studied the type of Omphalina tepeitensis 

 Murr., and concludes that it is the same as H. borealis. 



7 



Hygrophorus borealis f. salmoneus Coker 



Elisha Mitchell Sci. Soc. Jour. 64: 137. 1948 



Pileus 2.5 cm broad, convex, not umbilicate, watery white, flushed 

 with pinkish orange on one side, hygrophanous, opaque white when 

 not soaked, glabrous, obscurely striate when wet, margin even when 

 dry. Context white, less than 2 mm thick near disc; odor faintly of 

 wood, taste slight. 



Lamellae arcuate-decurrent, white but turning pinkish orange 

 when cut, 3 mm broad at center, slightly venose, margins even. 



Stipe 4 mm long, 3 mm thick below, 4 mm above, tapering 

 slightly downward, white above, dull pink below, the pink extending 

 when handled, nearly glabrous (with a few scattered fibrils). 



Spores 7.5-10 X 4-5.5 /x, ellipsoid, smooth, pale yellow in Melzer's 

 reagent. Basidia 34-42 X 5.5-8 /x, 4-spored. Pleurocystidia and cheilo- 

 cystidia none. Gill trama of interwoven hyphae. Cuticle of repent 

 hyphae. Clamp connections not observed. 



