NEW FUNGI FROM IOWA. 



5 



sometimes remain buried in the surface of tlie inner bark, Closely allied 

 to Valsa ambiens, Fr., but differs in its larger sporidia and the different 

 nature of its permanently covered disk. On dead stems of Menispermum 

 Canadense, October. 



Peziza (Humaria) fuscocarpa, E. & HoL— Sessile, orbicular, 

 3—4 mm. in diam., outside pruinose-tomentose and olivaceous yellow, 

 disk concave, olive-black, margin incurved ; asci linear, 65—80 x ^—5 ; 

 paraphyses Uliform ; sporidia unisertaie, ovate-oblong, brown, 2-nucleate^ 

 7—8 X 3— 3i !K On an old log, Sept. 1882. 



Cercospora Ranunculi, E. & HoL— On leaves of Banunculus 

 repens, July, 1884. Forming brown indefinitely limited patches on the 

 under side of the leaves which become dirty-yellowish above, without 

 the formation of any well defined spots. Hyphse in scattered tufts, 

 brown, continuous, abruptly undulate, crooked and subnodulose above, 

 75—90 X 4—4 ; conidia slender, nucleolate, becoming 4— 6-septate, 

 70—85 X 3—4 /^-. 



Cercospora Yicije, E. & Hoi.— On leaves of Vicia sativa, Chicasaw 

 Co., Iowa. On light brown, purplish bordered spots and irregularly 

 shaped, dead areas of the leaf. Hyphse densely tufted, continuous, brown, 

 entire or slightly denticulate above, short (25—30 x 3 — 4/^ ) ; conidia cylin- 

 drical, granular, becoming 3-septate, 30 — 40 x 3— 3i /^-. Differs from C. 

 Lupini, Ck. and C. Phaseolorum, Ck., in its definitely limited spots. The 

 former also has the hyphse branched much as in C. racemosa, E. & M. 



Cercospora omphakodes, E. & Hoi. — On leaves of Phlox divaricata, 

 var. Laphami. Aug., 1884. Amphigenous but more abundant below, 

 on round (5 — 6 brown spots which are mostly included in pale-brown 

 dead areas of the leaf. Hyphse brown, continuous or faintly septate, 

 abruptly bent, subgeniculate and imperfectly dentate above, 60—75x3 fJ- ; 

 conidia brownish, cylindrical, mostly about 50—60 x 3— 3i /^-, faintly 5—6 

 septate. 



The specific name alludes to the tardy maturing of the conida which 

 remain for some time granular and faintly 1— 2-septate. 



Cercospora antipus, E.& Hoi.— On leaves of Lonicera J!ai;a, August. 

 Amphigenous but mostly hyhophyllous, on round (3 — 4 mm.) spots, dirty 

 gray above and ferruginous-brown below, with a rather broad, raised, dark 

 colored border. Hyphse fasciculate, brown undulate and subgeniculate, 

 imperfectly toothed above ; conidia cylindrical or clavate-cylindrical 

 with a pale yellowish tint, becoming faintly 3— 5-septate, 30— 45 x 2i— 3 r-. 

 Sphcerella Clymenice, Sacc. occurs on the upper surface of the spots. 



Cercospora Galii, E. & Hoi.— On leaves of Galium aparine, July. 

 Mostly hypophyllous, on dead grayish-brown definitely limited spots and 

 areas of the leaves. Hyphse simple, continuous, brown, undulate and 

 geniculate above, 35 — 50 x 3—4 forming dense tufts arising from a 

 tuburcular base ; conidia cylindrical, continuous (becoming septate), 

 brownish, nucleolate, 30—40 x 3i /^-., nearly straight. 



