MACBOSPOEIUM. 433 



branch; conidia obo-vate, pedicellate, generally 3-septate 

 and muriformly divided, at length oblong. 



Macrosporium concinnum. Berk., Ann. Nat. Hist., n. 235, 

 t. xii. f. 21 ; Sacc, Syll., iv. n. 2536. 



On dead decorticated branches of willow. 



Macrosporium tomato. Cke. 



Patches orbicular, J-J in. across, blackish ; hyphae short, 

 thick, flexuons or subangnlar, septate ; conidia clavate, apex 

 rather pointed, attenuated downwards, pedicel very short, 

 brown, broken up into several cells by transverse and 

 vertical septa, 100-120 x 16-24 fj.. 



Macrosporium tomato, Cke., Grevillea, xii. p. 32 ; Sacc, Syll. 

 iv. n. 2525. 



Forming blackish patches on ripe tomatoes. 



Macrosporium alliorum. Cke. & Mass. 



Effused in thin fuliginous patches ; hyphae flexuons, simple, 

 septate, nodulose, collapsing when dry; conidia elliptical, 

 triseptate, then divided into quadrate, muriform cells, amber- 

 coloured, with a tinge of olive, 40-50 X 20-25 ju,. 



Macrosporium alliorum, Cke. & Mass., Grev., xvi. p. 80. 



On onion leaves. 



Macrosporium delicatulum. B. & Br. 



Tufts soft, delicate, black; hyphae subulate, slender, 

 many-septate, brown, paler upwards; conidia somewhat 

 hyaline, oblong, obtuse at both ends, usually 6-celled, cells 

 irregular in form, one or other usually vertically septate. 



Selminthosporium, delicatulum, B. & Br., Ann. Nat. Hist., 

 n. 233, t. xiii, f. 20 ; Sacc. Syll., iv. n. 1964. 



On dead stems of umbellifers. 



Macrosporium ramulosum. Sacc. 



Effused, velvety, black ; hyphae ascending, filiform, J mm. 

 high, 10-13 /J, thick, slightly thickened below, apex simple 

 or repeatedly shortly branched, everywhere closely septate, 

 intense sooty-brown, joints 2-guttate ; conidia apical, oblong 

 or obpiriform, 35-50 X 18 /x, 5-7-muriformly septate, crowded 

 with guttulae, smoky-brown. 



Macrosporium ramulosum, Sacc, Fung. Ital., t. 854 ; Sacc, 

 Syll., iv. n. 2512. 



On rotten stem of Apium petroselinwm, &c. 



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