758 ANNALS OP THE MISSOURI BOTANICAL GARDEN 



[Vol. 2 



moss stems. The specific name is rather fanciful and mis- 

 leading. 



Specimens examined: 

 New York: Whitehall, C. II. Peck, type of Corticium basale 



(in Coll. N. Y. State) ; Alcove, C. L. Shear, 1221. 

 North Carolina: Salem, Schweinitz, type (in Herb. Schw., in 



Curtis Herb., and in Kew Herb.). 



5. S. Shearii Burt, n. sp. Plate 27, fig. 16. 



Type : in Burt. Herb., and in Shear Herb. 



Fructification coriaceous, effused, dull white, drying pale 

 olive-buff, cracked, the margin determinate, entire; structure 



in section, 140-200 n thick, with (1) a broad and 



dense layer next to the substratum of longitudin- 

 ally arranged, slightly brownish, even-walled 



hyphae l|-2 n in diameter, which branch and 



Fig. 2 



S. Shearii. 



curve outward at a right angle and form (2) a 

 fertile, less compact layer 60-75 n thick of sub- 

 erect, few-branched paraphyses 3 n in diameter, 

 of basidia at about 15-20 n below the surface, and 

 of scattered, even-walled, flexuous, cylindric- 

 clavate organs — perhaps gloeocystidia — 40-45 X 

 6 n, not emergent above the surface ; basidia longi- 

 Pamphysis tudinally septate, pyriform, 15 X 9 n, with sterig- 

 organxsio. mata 18 X 3 /x; spores colorless, simple, curved, 



9-15 X 4^-6 it. 



Fructifications in crevices of bark at first, 2x1 mm., at 

 length, by confluence, 7 cm. long, 1 cm. broad. 



On dead Berberis vulgaris. District of Columbia. October. 



This species is well characterized by the presence in the 

 hymenial layer of flexuous, even-walled organs, which are 

 either latex or gloeocystidia, and by the broad layer of longi- 

 tudinally arranged hyphae which shows relationship to 

 Eichleriella, although the margin is not distinctly free. A 

 few small granules are present on the hymenial surface but I 

 do not know that they are a constant character. 



Specimens examined : 



District of Columbia : grounds U. S. Dept. Agr., "Washington, 

 C. L. Shear, 1238, type. 



