GONYTBICHUM STACHYLIDIUM. 387 



Tribe 11. StacJiylidieae. Sacc. 

 GONYTKICHUM. Nees. (fig. 39, p. 358.) 



Hyphae decumbent, branched, bearing here and there long, 

 swollen, spinulose nodes ; conidia springing from the tips of 

 the spines on the nodes, subglobose, almost solitary or col- 

 lected into heads, and sometimes involved in mucus. 



Gonytrichum, Nees, Act. Leop., ix. p. 244, t. 15, f. 14; Sacc., 

 Syll., iv. p. 329. 



Gonytrichum caesium. Nees. (fig. 39, p. 358.) 

 Tufts minute, pulvinate, grey at first, then brown ; hyphae 

 rather rigid, septate; brown, apex paler, nodulose, spines 

 subulate, almost colourless; conidia elliptical, 2-3 X 1 ft, 

 sometimes 2-guttulate, and looking as if 1-septate, hyaline. 



Gonytrichum caesium, Nees, Act. Leopol., ix. p. 244, t. 15, f. 

 14; Sacc., Syll., iv. n. 1592. 

 On fallen wood and branches. 



STACHYLIDIUM. Link. (fig. 36, p. 358.) 



Sterile hyphae creeping, scanty ; fertile erect, somewhat 

 verticillately branched ; conidia aggregated at the tips of the 

 branchlets, globose or elliptical. 



Stachylidium, Link, Obs., i. p. 13 ; Sacc., Syll., iv. p. 331. 



Stachylidium cyclosporum. Grove, (fig. 36, p. 358.) 

 Fertile hyphae erect, paler and attenuated upwards, base 

 brown, 200-300 x 4 p., septate and branched above, branches 

 2-4 springing from the septa, 2-4 jointed, dividing into 

 opposite or alternate branchlets, ultimate branchlets subu- 

 late, hyaline, bearing a head of conidia 8-10 //, diameter ; 

 conidia spherical, somewhat hyaline, 2 2 '5 p, diameter, in- 

 volved in mucus. 



Stachylidium cyclospora, Grove, Journ. Bot., 1885, p. 12, t. 

 257, f. 6; Sacc., Syll., iv. 1607. 

 On fallen branches. 



2 c 2 



