54 SECTION CAMAROPHYLLOPSIS 



Habit, Habitat, and Distribution — On bare soil, Trinidad and 

 Brazil, April and September. 



Observations — The above description is adapted from Dennis' 

 report ( 1953 ) of his collection in Trinidad. After his study of Spegaz- 

 zini's type, Dennis, with some hesitancy, concluded that his collections 

 were identical with CAitocybe biiccimria Speg. We have had no op- 

 portunity to study fresh material, but are inclined to follow Dennis in 

 considering the spore size as given by Spegazzini on the tvpe packet as 

 correct, especially since Dennis has found specimens with such spores. 



6 



Hygrophorus borealis Pk. f. borealis 



N. Y. State Mus. Ann. Rept. 26: 64. 1874 



Camarophyllus borealis (Pk.) Murr., North Amer. Flora 9: 385. 1916. 

 Omphalina tepeitensis Murr., North Amer. Flora 9: 348. 1916. 



Illustrations: 



Fig. 12; also 7c. 



Coker, Elisha Mitchell Sci. Soc. Jour. 64, pi. 17 (top) . 



Smith, Mich. Acad. Sci., Arts and Letters 17, pi. 31. 



Pileus 1-4.5 cm broad, obtuse to convex, becoming subumbonate, 

 plane or with the disc slightly depressed, the margin remaining de- 

 curved or spreading and somewhat undulate in age, waterv white 

 when moist, dead white to nearly chalk white when faded, glabrous, 

 moist, somewhat lubricous at times, the margin striatulate when ex- 

 panded and moist, even or wrinkled slightly after losing moisture. 

 Context thick on the disc, thin on margin, whitish, soft and fragile; 

 odor and taste not distinctive. 



Lamellae arcuate, becoming decurrent, white, subdistant to distant, 

 intervenose, generally narrow, broadest next to the stipe, edges even. 



Stipe 2-9 cm long, 2-8 mm thick, dull white, equal or tapering 

 downward, firm, dry, glabrous or rarely innately silky, straight or 

 flexuous, stuffed. 



Spores 7-9(12) X 4.5-6.5 ^, ellipsoid, smooth, white in mass, pale 

 yellowish in Melzer's reagent. Basidia 40-56 X 6-8 fx, 2- and 4-spored. 

 Pleurocystidia and cheilocystidia none. Gill trama interwoven, cells 

 6-10(14) fx broad, yellowish in iodine. Cuticle of repent hvphae not 

 sharply differentiated from the pileus trama. Pileus trama of radial 

 subparallel hyphae. Hypodermium not differentiated. Clamp connec- 

 tions present on the cuticular hyphae. 



Habit, Habitat, and Distribution — On soil, in deciduous and 

 conifer woods, Nova Scotia to Washington, California, Oregon, Wyo- 

 ming, Idaho, Michigan, Tennessee, North Carolina, Pennsylvania, New 



