252 SECTION HYGROPHORUS 



lar (in dried material), smooth, tinged yellowish in Melzer's reagent. 

 Basidia 37-56 X 6-8(9) /a, 4-spored. Pleurocystidia and cheilocystidia 

 none. Gill trama ( in dried material) only slightly or not at all divergent, 

 often slightly interwoven, hyphae 3-10 /* broad. Cuticle of repent, nar- 

 row, gelatinous hyphae, 1.5-4 /x broad, the gelatinous zone 100-140 ^ 

 thick. No hypodermium differentiated. Pileus trama interwoven, hy- 

 phae radially disposed. Clamp connections not found. 



Habit, Habitat, and Distribution — In leaf mold, under magno- 

 lia, Florida, January. 



Material Studied — Florida: Murrill 16030 (type, from Alachua 

 Co., Jan. 9, 1938). 



Observations — The description of macroscopic characters above 

 is taken from Murrill's ( 1938 ) original account. We have studied the 

 type; the description of microscopic characters given above is based on 

 these type studies. 



In his Latin description, Murrill ( 1938 ) states that the stipe is vis- 

 cid, although he omits this point in the English version. Sections of 

 dried material do not revive well, and the gill trama does not show the 

 typical divergent condition. A study of revived material of other species 

 of section Hygrophorus which were known to have divergent gill trama 

 was made as a comparison, and it was found that in the less robust 

 species the trama does not always revive in such a manner as to show 

 the original arrangement of the hyphae. For this reason further studies 

 of fresh material are desirable on Murrill's species. 



151 



Hygrophorus eburneus ( Fr. ) Fr. 



Epicr. Myc, p. 321. 1838 



Agaricus eburneus Fr., Syst. Myc, p. 33. 1821. 



Limacium eburneum (Fr.) Kummer, Fiihr. in Pilzk., p. 119. 1871. 



Illustrations: 

 Fig. 73. 



Atkinson, Mushrooms, Edible, Poisonous, etc., fig. 113. 

 Bresadola, Icon. Myc, tab. 303. 

 Bulliard, Herb. Fr., pi. 551, fig. 2. 

 Dufour, Atl. Champ., pi. 19, fig. 41. 

 Gillet, Champ. Fr., pi. 122 (335). 



Giissow and Odell, Mushrooms and Toadstools, pi. 46, fig. 2. 

 Krieger, Mushroom Handbook, fig. 93. 

 Lange, Flora Agar. Dan. 5, pi. 164 E & E 1 . 

 Murrill, Mycologia 6, pi. 131. 

 Ricken, Die Blatterp., pi. 6, fig. 5. 

 Schaeff., Fung. Bavar., pi. 39 (as Agaricus laetus) . 

 Smith and Hesler, Lloydia 2, pi. 1. 

 Wakefield and Dennis, Common British Fungi, pi. 34, fig. 3. 



