19S1] The Thelephoraceae of North Carolina 161 



thinner and finely cracked, the cracks involving only the surface 

 layer. Flesh brown, fibrous, about a quarter mm. thick near margin. 

 The plant appears first as small, scattered patches with a plush-like 

 surface which rapidly extend and coalesce to form large patches up 

 to 6 cm. broad and 15 cm. long, perhaps larger at times. If protected 

 in a Petri dish the growing margin becomes densely tomentose with 

 short fibers of the same handsome purplish color. At full maturity 

 the surface becomes glabrous. 



Basidia club-shaped, 5.5[x thick, with four sterigmata. Spores 

 (of No. 3914) white, elliptic, smooth, 3.6-4.4 x 6-8.5[x, rarely up to 10[jl. 

 Cystidia long, pointed, often crooked or constricted below, extending 

 beyond the surface (at times twice as far as in the drawing), set with 

 crystals. Bourdot and Galzin give the spores as 9-12 x 3-4. 5[x; 

 the basidia as 6-8 x 20-26[x 



3914. On a dead stem of privet, December 20, 1919. 



3946. On twig of Chinese privet {Ligustrum Chinense) in Arboretum, January 16, 



1920. 

 3964. On Baccharis in Arboretum, January 17, 1920. 



4. Peniophora longispora (Pat.) 



Plates 17 and 32 



Plant entirely resupinate, in patches up to 5 cm. long by 3 cm. 

 wide and up to 148tJL thick; open, hypochnoid, finely pubescent and 

 somewhat resembling a mold; color light gray to white with small 

 creamy areas, color depending upon age, margin indeterminate. 

 Context made up of very loosely packed, much branched, clamp- 

 connected, unencrusted hyphae 2.6u. thick. Hymenium of very 

 inconspicuous basidia, mostly about 4.5[jl thick, and many cystidia 

 which are about 3.7 x 40[x, more or less pointed and encrusted with 

 crystals and projecting far beyond the basidia. In untreated sec- 

 tions there is a distinctly darker region in the hymenium indicating 

 the presence of numerous crystals. 



Spores pure white, very long and pecuhar, 2-2.6 X 13-16. 6[x, 

 pointed at both ends, straight or slightly bent and with two or three 

 conspicuous droplets. 



Bresadola's measurements in this species (as Kneifiia, 1. c, p. 105) 

 are: spores 2.5 x 12-15[jl; basidia 5-6 x 30-32[jl; cystidia 3-4.5 x 

 70-90[x, encrusted with granules. 



4242. On bark of rotten oak limb, near Meeting of the Waters. 

 4250. On decorticated sycamore (?) wood, April 15, 1920. 



