BOSTRICHOXEMA — DACTYLIU.M oil 



constricted, slightly thinner to^varJs the tip ; conidia pr<j- 

 duced at the apex (and laterally ?), elliptical, for a lonu; 

 time 1-celled, then 2-celled and slightly constricted at tlui 

 septum, 20-22 x 14-15, colourless, curved, at length 

 asperulate. 



Boslrichonema alpestre, CesatI, Erh. Critt. Ital., n. 140 ; 

 Sacc, Syll. iv. n. 909. 



On living leaves of Pohjtjonum historta, P. vivipara, Szo, 



Bostrichonema modestum. Sacc. 



White, springing from brownish spots ; hyphae almost 

 straight or slightly wavy, about 100-7 /x; conidia elliptic- 

 oblong, 1-septate, constricted, 24-27 x 8-10 /x. 



Bostrichonema modestum, Sacc, Syll., n. 910. 



Dactylium modestum, Berk, and White, Scottish Nat., vol. iv. 

 p. 162. t. 2, fig. 2. 



On the under surface of fading leaves of Alcliemilla cdpina. 



Sect. III. PHRAGMOSPORAE. Sacc. 

 Subsect. 1. Macronemeae. Sacc. 

 Tribe 8. Dactylieao. Sacc. 

 DACTYLIUM. Nees. (fig. 26, p. 274.) 



Saprophytes. Sterile hyphae creeping, fertile ascending, 

 repeatedly branched in a verticillate manner, or (in the sub- 

 gen. Hehnintlioi^liora) once verticillately branched. Conidia 

 oblong, 2 or many septate, colourless, subsolitary at the 

 tij^s of the branchlets. 



Dactylium, Fries, Syst. Myc, iii. p. 413; Sacc, Syll., iv. 

 p. 189. 



Dactylium dendroides. Fries, (fig. 26, p. 274.) 

 Forming whitish, effused, byssoid tults ; fertile hyphae 

 erect, septate, main branches usually subopposite, bianchlefs 

 in whoils of three as a rule, tips thin ; conidia oblong, 

 apiculate at the base, 3-septate, scarcely constricted at the 

 septa, colourless, 26-32 x 10-13 /x. 



