SUBSECTION CAMAROPIIYLLI 345 



smooth, colorless or very faintly yellowish in Melzer's reagent. Basidia 

 38-57 X 5-7 /*, 4-spored. Pleurocystidia and cheilocystidia none. Gill 

 trama divergent, hyphae 2-7 fi broad. Cuticle a gelatinous zone 100- 

 400 fx thick, hyphae pale brownish, narrow (1.5-4 fx), with scattered 

 lactifers. Hypodermium none or indistinct. Pileus trama of loosely inter- 

 woven, radially disposed hyphae, with lactifers. The entire cuticular 

 structure is similar to that of H. russula. Clamp connections present on 

 the cuticular and gill trama hyphae. 



Habit, Habitat, and Distbibution — On soil, under oak, Florida, 

 November-December. 



Matebial Studied — flobida: Murrill F18404 (type, from Gaines- 

 ville, Nov. 16, 1938); Hesler 21062. 



Obsebvations — We have studied the type, and have collected and 

 studied fresh material taken in Florida. The following notes were re- 

 corded on the type: Spores 8-12 X 2.5-3.5 /a, oblong, obliquely apicu- 

 late, smooth, colorless. Pleurocystidia and cheilocystidia none. Basidia 

 38-57 X 5-7 /x, 4-spored. Gill trama of divergent hyphae; sections of 

 dried material show slightly interwoven to subparallel hyphae, but in 

 sections allowed to stand a few hours in chloral hydrate the trama as- 

 sumed the divergent form. Clamp connections present on the hyphae 

 of the cuticle and gill trama. 



The gill trama is divergent, but in sections of dried material it ap- 

 pears to be somewhat interwoven. The spores are indeed distinctive for 

 an Hygrophorus. The species is related to H. russula. Murrill (1939a) 

 says that dried specimens have an odor of coconut candy, an odor we 

 have not detected. 



210 



Hygrophorus russula ( Fr. ) Quel. 



Ench. Fung., p. 49. 1886 



Agaricus russula Fr., Hymen. Eur., p. 52. 1874. 

 Tricholoma russula (Fr.) Gill., Champ., Fr., p. 91. 1874. 

 Melanoleuca russula (Gill.) Murr., North Amer. Flora 10: 22. 1914. 

 Illustrations: 

 Fig. 108. 



Bresadola, Fung. Mang., pi. 22 (as Tricholoma russula) . 

 Bresadola, Icon. Myc. 2, pi. 67 (as T. russula). 

 Cooke, fflus., No. 1116, t. 926 (as T. russula). 

 Hard, Mushrooms, fig. 51 (as T. russula) . 

 Kauffman, Agar. Mich., pi. 26. 

 Krieger, Mushroom Handbook, pi. 20. 

 Michael, Fiihrer f. Pilzfreunde, 2 (as T. russula). 

 Peck, N. Y. State Mus. Bull. 54, pi. 77, figs. 1-5 (as T. russula). 

 Pomerleau, Mushrooms of Eastern Canada and the U. S., fig. 17A. 

 Ricken, Die Blatterp., pi. 4, fig. 1. 

 Smith and Hesler, Lloydia 2, pi. 18. 



