404 FUNGUS-FLOEA. 



Tribe 16. Septonemeae. Sacc. 

 SEPTONEMA. Corda. (% 18, p. 397.) 



Sterile hypliae creeping, often obsolete; fertile hypbae 

 very sbort or scarcely distinct from tbe conidia. Conidia 

 oblong, pluriseptate, brown, catennlate. 



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

 p. 397. 



Distinguished from ToruJa and Hormiscium by the septate 

 conidia. 



Septonema spilomeum. Berk. 



Tufts minute, scattered, blackish ; chains of conidia 

 branched ; conidia elliptic-oblong, 3-septate, rugulose, smoky, 

 25-28 X S fi. 



Septonema sinlomeum. Berk., Hook. Journ. 1845, iv. jd. 310, 

 t. xi., f. 5 ; Sacc, Syll., iv. n. 1895. 



On fallen "Avood, sawdust, &c 



Septonema irregulare. B. & Br. (fig. 18, p. 397.) 

 Effused, thin, black, very irregular in outline ; conidia 



concatenate, elliptic-oblong, 3-septate, slightly constricted at 



the septa, 17-28 x 6-8 /x. 



Septonema irregulare^ B. & Br., Ann. Nat. Hist., n. 942, 



t. 15, f. 13; Sacc, Syll., iv. n. 1896. 

 On living branches of Pyrus mains. 



Subsect. 2. Macronemeae. Sacc 



Tribe 17. Helmintliosporieae. Sacc. 



HELMINTHOSPORIUM. Link. (fig. 10, p. 397.) 



Hj'phae rather rigid, subsimple, often nodulose, brown, 

 usually growing on wood and forming velvety, effused 

 stains ; conidia cylindrical, fusoid, or elongato-clavate, 

 smooth, 2- many-septate, rigid. 



Hehnintlwsporium, Link, Berlin Mag. 1809, iii. p. 10; 

 Sacc, Syll., iv. p. 402. 



