344 MELAMPSORA 
Spermogones. Hardly projecting, flat, mostly under the 
stomata. 
Aicidiospores. Ceeomata irregular in outline, clustered or 
circinate on large pale-yellowish spots, often 
confluent, 1—2 mm. diam.; bright orange- 
yellow; spores roundish-polygonal, 11—20 x 
11—15 yw; epispore very thin, delicately 
warted. 
Uredospores. Sori hypophyllous, minute, 
deep-orange, causing yellow spots on the 
upper side; spores more or less round, orange, 
echinulate, 183—17 x 12—14; paraphyses 
Fig.259. M.Orehiai- mostly capitate, with thin pedicels, 40— 
reece, Gems 70 x16—20, 
ovata, from one of Teleutospores. Sori hypophyllous or a 
aegis ae w- few on the upper side, subepidermal, small, 
dark-brown; spores prismatic, rounded at 
both ends, 16—48 x‘7—14y; epispore clear-brown, uniformly 
thin (about 1»), without any evident germ-pore. 
Ceomata on Lnstera ovata, Orchis latifolia, O. maculata, 
May, June; uredo- and teleutospores on Sahix aurita, 8. repens. 
Not common. (Fig. 259.) 
The ceoma is also recorded on Listera cordata, Goodyera repens, and 
Gymnadenia conopsea, but no experimental proof of the connection seems 
to be forthcoming in the case of these species, though both Plowright and 
Klebahn have demonstrated it for the other species. The teleutospores 
germinate, as usual, after the winter’s rest. Soppitt found the coma on 
O. maculata and the teleutospores on S. repens growing together near 
Southport.—The ecidium of Puccinia Orchidearum-Phalaridis can be 
readily distinguished from the ‘ceoma of this species by its evident 
peridium and the regularity of its form. 
7. Melampsora Allii-fragilis Kleb. 
Uredo Alltiorum DC. ; Cooke, Micr. Fung. p. 217 p.p. 
Cacoma Alliorum Link ; Plowr. Ured. p. 261 p.p.. 
Melampsora Vitellinae Plowr. /.c. p. 240 p.p. 
M. AUii-fragitis Web. in Pringsh. Jahrb. f. Wissensch. Bot. 1901, 
xxxv. 671, Fischer, Ured. Schweiz, p. 481. 
