188 Clavarias of the United States and Canada 



wrinkled branches, which after several subdivisions end in sev- 

 eral small cusps ; whitened below and soon fading into the mycelium 

 which extends in all directions in many threadlike strands which 

 are white when undisturbed, but turn pink when exposed as do 

 also the whiter parts of the stem base (a form occurs with a long, 

 tough, pinkish rhizomorph, as No. 2730, which see) ; color above 

 cinnamon-tawny (about tawny olive of Ridgway), darkening 

 downwards to about that of C. grandis (antique brown or buck- 

 thorn brown of Ridgway), the tips somewhat lighter, but not 

 abruptly whitish. Flesh whitish or cinnamon, not very brittle, 

 bitter, odor slight. When dry becoming a deep reddish brown, 

 from Sudan brown to Brussels brown of Ridgway; with the 

 hymenium of a more or less velvety appearance. 



Spores (of No. 2287) ovate to pip-shaped, with a stout 

 eccentric mucro, the surface set with prominent, irregular, warty 

 spines, color deep rusty ochraceous in front view of a good print, 

 about orange ochraceous of Ridgway in side view, 4.8-5.3 x 8-11(jl, 

 most about 5x8[a. Basidia 4-spored, 5.5-7jjl thick; hymenium 

 60-75;/. thick; hyphae about 3.7jx thick, regular, parallel and very 

 closely packed, small clamp connections present. 



Gregarious or loosely cespitose in leaf mold or moss in low 

 f rondose woods ; rather rare. 



Peck's type plants from Alabama are like ours and the spores 

 are indistinguishable. In the type they are strongly warted, 

 4.4-5 x 7.5-8.5(x. On the label with the type Earle says, "On moist 

 earth, dark brown throughout, end of branches blunt, spores 

 ochraceous, ovate, sharply echinulate, 6 x 4(x." Peck's character 

 of "wrinkled" stem and branches is evidently based only on the 

 dried plant and without significance. 



The rhizomorphic form above mentioned is very striking. 

 However, in the absence of any other discernible difference, we 

 are considering it only a form. No. 4416, a typical example, 

 shows the spores 4.8-5.9 x 5.9-8[a, rarely IOjx; basidia 7A\x thick, 

 4-spored; hymenium 65-75\u thick; threads of flesh as in the typical 

 form. The presence of the rhizomorph is probably due to some 

 character in the substratum, plants in decaying leaves or pure 

 humus lacking the rhizomorph, those in earth usually possessing 

 one. 



The species is in the C. grandis group and is distinguished 

 from its nearest relatives as follows: from C. grandis by the 



