DICOOCUM — BISPOEA. 389 



Chalara longipes. Cooke, (fig. 35, p. 358.) 

 Tufis effused, inconspicuous; mycelium branched, often 

 anastomosing, septate; hyphae simple, septate, brown, pel- 

 lucid, apex running out into a rigid, very fragile, simple, 

 dichotomous, or rarely trichotomous chain of cylindrical 

 conidia. 



Chalara longipes, Cooke, Grev., 1881, p. 50 ; Sacc, Syll., iv. 

 n. 1621. 



On damp fallen pine leaves, pericarp of walnut, &c. 



Sect. II. DIDYMOSPOEAE. Sacc. 



Subsect. 1. Micronemeae. Sacc. 



Tribe 13. Bisporeae. Sacc. 



DICOCCUM. Corda. (fig. 38, p. 358.) 



Conidia oblong or shortly clavate, brown, 1-septate, 

 springing from very short simple hyphae. 



Bicoceum, Corda, in Sturm, Deutsch. PL, t. 54 ; Sacc, Syll., 

 iv. p. 342. 



Dicoccum uniseptatum. B. & Br. (f. 38, p. 358.) 



Tufts minute, black; conidia obovate, 1-septate, vinous- 

 black, shortly pedicellate, 12-13 /a long, the lower joint 

 shortest and narrowest. 



Bicoceum uniseptatum, B. & Br. ; Sacc, Syll., iv. n. 1628. 



Sporidesmium, uniseptatum, B. & Br., Ann. Nat. Hist., m. 

 815, t. ix. f. 2. 



On twigs of Clematis vitalba. 



BISPOEA. Corda. (fig. 37, p. 358.) 



Conidia oblong, 1-septate, fuscous, catenulate; springing 

 from very short hyphae. 



Bispora, Corda, Icon. Fung., i. p. 9 ; Sacc, Syll., iv. p. 



343. 

 Distinguished from Bicoceum by the concatenate conidia.. 



