BKACHYSPOEIUM. 413 



brown, rather pellucid ; conidia oblong-ovoid, yellow-brown, 

 pellucid, 18-20 /x in length. 



Brachysporium oosporum, Sacc, Syll., iv. n. 2040. 



Helminthosporium oosporum, Corda, Tcon. Fung., i. p. 14, 

 f. 200. 



On decaying trunks, branches, &c. 



Brachysporium altum. Sacc. 



Tufts effused, tomentose, black ; hyphae slender, elon- 

 gated, simple, subpellucid then very black and opaque, bear- 

 ing conidia at the apex ; conidia oblong or piriform, attenu- 

 ated below, 7-9-septate, blackish-brown, pellucid, lowest cell 

 very small, uppermost one much larger. 



Brachysporium altum, Sacc, Syll., iv. n. 2044. 



Helminthosporium altum, Prenss, Fung. Hoyersw., n. 59 ; 

 and in Sturm's Deutschl. Or. H., t. 17. 



On rotten wood. 



Brachysporium hyalospermum. Sacc. 



Tufts somewhat effused, black ; hyphae simple, straight, 

 rigid, fuscous, more or less pellucid; conidia minute, ob- 

 ovate, 3-septate, 18-20 /a long, colourless. 



Brachysporium hyalospermum, Sacc, Syll., iv. n. 2047. 



On rotten wood. 



Brachysporium apicale. Sacc. 



Hyphae simple, equal, septate, attenuated upwards, terminal 

 cell verruculose and conidia-bearing; conidia apical, elliptical, 

 3-septate, brown, dark in the centre and hyaline at either 

 extremity, 17-18 /n, long. 



Brachysporium apicale, Sacc, Syll., n. 2048. 



Helminthosporium apicale, B. & Br., Ann. Nat. Hist., n. 947, 

 t. xvi. f. 15. 



On fallen branches. 



Brachysporium Bloxami. Sacc. 



Sparingly effused, black, hyphae erect, rigid, opaque, 

 slender, simple or rarely furcate, base generally slightly 

 inflated; conidia terminal, elliptic-clavate, 3-celled, brown, 

 25-27 X 12-14 /J., epispore thin. 



Brachysporium Bloxami, Sacc, Syll., iv. n. 2049. 



Helminthosporium Bloxami, Cke., Grevillea, xii. p. 36. 



On naked wood. 



