16 Clavarias of the United States and Canada 



5. Wood-brown, 4-7 cm. high ; spores globose, eehinnlate 



C. aspcrulospora (p. 63) 

 5. Dingy yellow or pale cinereous; spores minute, 3-3.7 x 4.4-5.2/* 



C. Macouni (p. 34) 



5. White, or the tips yellowish, very brittle, densely clustered to single ; 



spores pip-shaped to ovoid, variable in size and form, about 2.5-3.5 x 



4-6. 5/x .C. vermiculata (p. 45) 



5. Grayish or smoky flesh color, tips soon blackish ; spores not very dif- 



rent from the above C. fumosa (p. 50) 



5. Purplish or isabelline ; very hollow; spores long, about 2.5-4x7-10^ 



C. purpurea (p. 51) 



5. Plant some shade of yellow or orange or greenish yellow or pale buff 



Spores warted, subglobose C. inaequalis (p. 63) 



Spores smooth 6 



6. Egg yellow, long-clavate or cylindric, not pointed, stuffed or hollow ; 



spores oblong-ovoid with a large eccentric mucro, about 4-6 x 6-7/x 



C. pulchra (p. 58) 



6. Yellow, hollow (unless flattened), thickest near the middle, pointed, the 



tips soon darker and shrunken; spores spherical, about 5-7//, thick 



C. fusiformis (p. 54) 



6. Buffy yellow, cylindrical, 1.5-5 cm. high, brittle; in small clusters or 



single ; flesh yellowish ; spores commonly 2-3 x 6-8// 



C. helveola (p. 37) 



6. As above, but stouter, the stem more distinct and the spores larger, 



about 5-6 x 10-1 1/x ._ C. argillacca (p. 28) 



6. Pale yellowish, small, 0.6-1.3 cm. high, single, usually forked or antlered 



above, toughish, the base covered with scurf or hairs ; odor fetid ; 



iioor -> c a - \ C- luteo-ochracca (p. 32) 



spores minute, oval, 2.2-3.5 x 3.5-4.5// - 



i C. biformis (p. 34) 



6. Color of plant and size of spores as in C. lutco-ochracea, but not forked 



above, base not scurfy-hairy and no bad odor ...C. citriceps (p. 49) 



6. Yellow, very small, simple, gregarious, about 8.5-12.5 mm. high, thick- 



ened above; spores rod-elliptic, about 2-3x6-ll/x 



C. vernalis (p. 35) 



7. Stem long, dark brown, the lower half or third hispid with stiff, 



straight, brown hairs C. ornatipes (p. 67) 



7. Stem long, pale flesh color, loosely covered with long, flexuose, whitish 

 hairs C. Murrilli (p. 190) 



7. Stem not hispid or with long fibers (the stem may be short-tomentose 



or velvety or scurfy, particularly at the base).... 8 



8. Plant a pale, livid flesh color, up to about 4.5 cm. high ; thickened up- 



ward; taste slight C. amethystinoides (p. 65) 



8. Plant dull yellow, clear yellow, or ochraceous yellow ; single or clus- 

 tered, slender throughout ; taste rank and bitter 



C. muscoides (p. 80) 



8. Plant varying from dull pallid or creamy white to grayish flesh color 



or grayish lavender, the lower part sometimes blackish (from a para- 



