96 FIELD COLUMBIAN MUSEUM BOTANY, VOL. i. 



M. Saponarise Peck. 



On Saponaria officinalis, Oct. 6, 1894 (Nut tall, 1695). 



M. olivaceum E. & E., Proc. Phila. Acad., 1894, 383. 



TYPE HABITAT: Parasitic on Sphceropsis Asimince on dead limbs 

 of Asimina triloba, March, 1894 (Nut tall, discov. 1418, 388). 



Forms a light olive velutinous coat over the pustules of the 

 Sphaeropsis. Hyphae tufted, yellowish brown (under the micro- 

 scope), septate, erect, nearly straight or subundulate, 80 to 100 

 x 4 to 5 ft. Conidia obovate or obpiriform, 3 to 5-septate and 

 muriform, brown, 24 to 38 x 15 to 20 ft terminal, sessile. Co- 

 nidia also occur subcubical or subglobose 1 5 to 20 ft diameter with 



2 septae crossing each other at right angles. 





 M. antennseforme B. & C. 



On Celtis occidentalis, Aug. n, 1894 (Nut tall, 1652). Conidia 



+ 95 x 15 it. 



M. - - sp. 



TYPE HABITAT: On pods of Datura Stramonium, Feb. 10, 1894 

 (Nuttall, discov. 1369, 326). 



M. TOMATO Cooke? 



On ripe fruit Lycopersicum esculentum cult. Spores shorter than 

 described. Sept. 9, 1893 (Nuttall, 1195). Same host Monon- 

 galia Co., at Morgantown, prevalent 1891 (MillspaugK). 



M. Maydis C. & E. 



On leaves Zea Mays cult. , with conidia smaller than described, 

 Nov. 1893 (Nuttall, 1334, 292). 



TRICH^GUM Corda. 



T. nodulosum E. & E., Proc. Phila. Acad., 1894, 385. 



TYPE HABITAT: On dead leaves Carex Fraseri, Feb. n, 1894 

 (Nuttall, discov. 1373, 333). 



Erumpent, tufted, becoming subeffused, black, tufts gregarious, 

 forming subvelutinous patches 2 to 4 mm. across, or when stand- 

 ing singly the hyphae and conidia forming a compact mass .5 to 

 i mm. diameter, and resembling somewhat the sorus of a Puccinia. 

 Hyphae simple sparingly fasciculate, brown, septate, often swol- 

 len at the septa, about 4 //. thick and 200 to 300 //long. Conidia 

 near the base of the hyphae, at first elliptical, yellowish-hyaline, 

 uniseptate, 8 to 10 x 6 to 7 ft, soon becoming 4 to 6-septate, muri- 

 form and opaque, 10 to 25 ft diameter, subglobose, obovate, or 

 elliptical. 



SEPTOSPORIUM Corda. 



S. EQUISETI PECK, Rep. State Bot. N. Y., 1892, 25. 



TYPE HABITAT: Tips of living leaves Equisetum arvense, Dodd- 

 ridge Co., near Center Point, and Monongalia Co., on College 

 campus, Morgantown (Millspaugh, discov. 1891). 



Hypae forming minute tufts, the fertile very short, bearing 



