Fleteruromyces. cat 
BIOLOGY.—This species has been the subject of many cultures by 
me. It has been stated that the uredospores are provided with para- 
physes ; in this country they certainly are not. It has been affirmed, 
too, that Ranunculus repens and acris bear the ecidiospores ; but in 
numerous cultures, many of which were serial (z.e. the same infecting 
material was simultaneously applied to a series of plants), no result 
was obtained on the above-named plants (2. acris and repens). The 
series included 2. duZbosus, and on it, and on it alone, the ecidium 
developed, the other species named above (R. repens and acris), as 
well as &. ficaria and auricomus remaining free from the parasite ; 
conversely, the zecidiospores from &. du/bosus applied to Poa pratensis 
and ¢@ivialis produced no result. 
For a detailed account of these cultures, see Quart. Four. of 
Micro, Science, vol. xxv., new series, pp. 152-156. 
Uromyces poz. Rabh. 
Zcidiospores—Similar to the preceding. Spores 15—20pin diameter. 
Uredospores—Sori orange, rounded, elliptical, or linear ; at first 
covered by the epidermis, which splits longitudinally. Spores 
rounded, elliptical, or ovate, finely echinulate, orange-yellow 
16-26 in diameter, without paraphyses. 
Teleutospores—Sori brown, small, punctiform or elongate, covered 
by the epidermis. Spores generally irregular in form, often 
elliptical or ovate, pale brown, with a smooth epispore, 17-25 
x 25-4opu. Pedicels long, narrow, rather persistent. 
Synonyms. 
Atcidium ficariea. Pers., “Obs. Myc.,” vol. ii. p. 23. Purton, 
“ Midl. Flor.,” vol. iii. p. 333. Sow, t. 397, fig. 4. 
Acidium ranunculacearum, D. C. in part. Cooke, “ Hdbk.,” 
p. 539; “Micro. Fungi,” 4th edit, p. 196, plate ii. figs. 12-14. 
Johnst., “ Flor. Berw.,” vol. ii. p. 206. Berk., “ Eng. Flor.,” vol. v. 
p- 370. 
cidium confertum, Grev., “ Flor. Edin.,” p. 446. Johnst., 
“ Flor. Berw.,” vol. ii. p. 205. 
Uromyces poe. Rabh., “Unio. Itin.” (1866), No. xxxviii. 
Winter in Rabh., “ Krypt. Flor.,” vol. 1. p. 162. 
Exstecati. : 
Cooke, i. 8; ii 87; “LL. F.,” 55. Vize, “ Fungi Brit.,” 72. 
