[Vol. 2 



756 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Specimens examined: 

 Alabama: Peters, Curtis Herb., 4557, type (in Kew Herb.). 



3. S. chlorascens Burt, n. sp. Plate 27, fig. 15. 

 Type : in Mo. Bot. Gard. Herb, and in Farlow Herb. 

 Fructification coriaceous, drying cream-color with glaucous 



tint, effused, ascending and incnisting the mossy bases of 

 trees and forming imbricated, free, pileate, 

 sterile branches, the apices spiculose or fim- 

 briate ; hymenium gelatinous, drying vinaceous 

 brown, occurring in somewhat scattered spots 

 on the lower portions of the fructification; 

 structure in section 800 n thick, with (1) a 

 broad, spongy layer next to the substratum of 

 loosely interwoven, rather rigid, even-walled 

 hyphae 2^-3 /x in diameter, which bear (2) a 

 sharply differentiated hymenial layer 140-240 n 

 thick, composed of rod-like paraphyses 2 n in 

 diameter, between which occur basidia through- 

 out the outer 60 y. of the layer; basidia longi- 

 tudinally septate, pyriform, 15-18x12 n; spores 

 simple, colorless, flattened on one side, 10-10^ X 

 6-7 /z. 

 Ascending objects 2-4 cm., 1-2 cm. broad; 

 free branches up to 5 mm. long. 



On mossy bases of living trees. Florida. Autumn. 

 As shown by the figures in pi. 27, the pileate branches of 

 S. chlorascens do not resemble those of ;S'. incrustans. The 

 structure in section is different in every detail from that of 

 specimens of the latter species and approaches more closely 

 that of S. Eelvelloides, but the fructification is thinner than 

 that of the latter, has smaller basidia and spores, and the 

 basidia distributed from the surface to about 60 /i below the 

 surface, and forms free pileate branches. 



Specimens examined : 

 Florida: Cocoanut Grove, R. Thaxter, 98, type (in Mo. Bot. 

 Gard. Herb., 43923, and in Farlow Herb.). 



4. S. Helvelloides (Schw.) Burt, n. comb. Plate 27, fig. 14. 



Fig. 1 



S. chlorascens 



Paraphyses, 



basidiumX540 



