432 FUNGUS-FLORA. 



Macrosporium cladosjyorioides, Desm., Plant. Crypt., 1857, 

 p. 3, and xxiv. p. 3 ; Sacc, Syll., iv. n. 2501. 



On fading leaves of beet, onion, lettuce, &c. 



The conidia are not vertically or murali-divided, hence 

 the present species differs from the typical condition of 

 Macrosporium. 



Macrosporium heteronemum. Sacc. 



Spots scattered, reddish-white, irregular, often confluent, 

 on both surfaces of the leaf; hyphae erect, septate, of two 

 forms, crowded into minute, distinct bundles ; the conidio- 

 phores short, nodulose, 50 x 5 /x, brown; sterile hyphae 

 simple, elongated, rather flexuous, whitish, obtuse above, 

 attenuated towards the base, 150-200 /x long ; conidia large, 

 pedicellate, oblong-clavate, brown, divided into cells by 3-7 

 septa, 50-60 fx long, pedicel hyaline. 



Macrosporium lieteronemum, Sacc, Syll., iv. n. 2502. 



Septonema heteronema, Desmaz., xxii. Not. p. 4. 



On dead or fading leaves of Sagittaria sagittifolia. 



Macrosporium brassicae. Berk. 



Forming small pustules ; hyphae fasciculate, simple, rather 

 flexuous, septate, slightly constricted at the septa, brown, 

 j)ale tow^ards the apex, 50-70 p. long ; conidia solitary and 

 terminal on the conidiophores, clavate, 5-10-septate trans- 

 versely, afterwards vertically septate, brownish, 50-70 X 

 10-16 fx, 



3Iacrosporium hrasslcae, Berk., Engl. Flor., vol. v. p. 339 ; 

 Sacc. Syll., iv. n. 2506. 



On decaying stems, leaves, fruits, &c., of cabbage. 



Macrosporium nobile. Vize. (fig. 25, p. 397.) 

 Hyphae fasciculate, short, erect, septate, brow^n, simple, 

 in minute tnfts; conidia rather large, subpiriform, or 

 irregular, 4-10 septate, unequally divide 1 by 2-6 vertical 

 septa, brown, constricted at the septa, 60-80 X 40 fx. 



Macrosporium nohile, Yize, in Grevillea, also in Cooke's 

 ' Black Moulds,' pi. 26, f, 20; Sacc, Sj^ll., iv. n. 2525. 

 On dead stems and leaves of Dianthus. 



Macrosporium concinnum. B. & Br. 

 Spots velvet}^, black ; hyphae flexuous, septate, minute, 

 brown, pellucid above and sometimes with a small lateral 



