DICOCCUM BISPOEA. 389 



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

 Tuft s 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. DIDYMOSPOKAE. 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. 



Dicoccum, Corda, in Sturm, Deutsch. Fl., t. 54 ; Sacc., Syll. T 

 iv. p. 342. 



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



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

 black, shortly pedicellate, 12-13 p. long, the lower joint 

 shortest and narrowest. 



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



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

 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 Dicoccum by the concatenate conidia. 



