170 Journal of the Mitchell Society [February 



somewhat tuberculate look. Flesh 180-260[jl thick, a beautiful clear 

 indigo in thin sections except for the outer part of the hymenium, 

 which is suddenly colorless. 



Spores white, elliptic, smooth, 4.3-5.2 x 8.5-1 l[x. Basidia 

 6.5-7. 5[JL thick, irregular. The spores sprout very soon in a damp 

 chamber, the filaments coming usually from one side of the distal 

 end. 



Easily recognized by the color and finely cracked surface. Mas- 

 see's colored figure (PI. 33, fig. 3) does not represent well the color 

 of our plant, but there seems to be no doubt of its identity. Plants 

 in the Curtis Herbarium from South Carolina, Alabama and England 

 are the same. The miscroscopic characters as given by Bourdot and 

 Galzin also agree. 



3997. On California privet by President's house, January 21, 1920. 

 4018. On standing branches of privet and crepe myrtle, January 24, 1920. 

 4722. On privet in President's yard, December 10, 1920. 

 Common on wood and bark. Curtis. 



2. Corticium lilacino-fuscum B. & C. 

 Stereum roseo-carneum (Schw.) Fr. 



Plate 33 



Extensively effused; margin definite, not fimbriate; not remov- 

 able. When wet membranous and soft, pale creamy gray with dis- 

 tinct tint of lilac; when dry shghtly duller and cracking through 

 the hymenium into numerous, rather small areas, showing the whiter 

 context beneath, not tuberculate except over the inequalities of 

 the bark. Entire thickness about ISS^l; the context composed of 

 rather loosely woven, clear threads, 2.4-3. 5[j. thick, with clamp con- 

 nections and many crystals. In the hymenium are numerous slender 

 paraphyses with short branches near their ends. Unfortunately our 

 figure shows only one and that not branched. Basidia 6.3-7.5^ 

 thick; up to 30[x long, 4-spored. 



Spores white or pale cream, smooth, elliptic, 3.8-5.5 X 7-9.3iJi, 

 easily collapsing. 



Our plants agree with plants so named from Ellis (N. Am. Fungi, 

 No. 515), and with Burt's description and figure of Stereum roseo- 

 carneum. In treating this as a Stereum, Burt is no doubt right, 

 but for convenience we retain it for the present in Corticium. 

 4071. On bark and wood of an oak limb, February 4, 1920. 



