282 PUCCINIA 
usually truncate above and thickened (up to 6), gently con- 
stricted, attenuated downwards, smooth; pale-brown, darker at 
the apex, 40—80 x 11—22; pedicels very short, persistent, 
somewhat hyaline, with a dark-brown band at the apex.] 
cidia on Clematis Vitalba, May—July ; [uredo- and teleuto- 
spores on species of Triticum (Agropyron), but not recorded as 
yet for Britain]. (Fig. 213.) 
Dictel first showed, by culture experiments, that the ecidium on 
Clematis Vitalba is connected with a Puccinia on Triticum glaucum. 
In Europe the ecidium is frequently observed (probably because of the 
striking distortions it produces), but the Puccinia has been far more 
rarely noted, being by no means conspicuous in its appearance. According 
to Sydow, it occurs also on Triticum junceum and T. repens, on which it 
may presumably be found in this country, if looked for. 
The statement of Rathay, that Herdium Clematidis belongs to a 
Melampsora on Poplar, is now universally discredited. It has been 
observed on many (nineteen) species of Clematis, but it must be noted, as 
remarked by Sydow, that the genus Z7yiticum is also very widely distributed, 
According to Fischer, the teleutospores are often accompanied by 
brown paraphyses, which subdivide the sori into smaller compartments, 
something like what obtains in P. dispersa and P. persistens. Other 
authors have not found the paraphyses, but they are easily overlooked ; 
abnormal three-celled teleutospores are recorded. Probably more than 
one species has been included under the name. P. agropyrina Eriks. 
is distinctly different. 
DistRisuTion: Europe, North and South America, Turk- 
estan, Japan, Australia. 
134. Puccinia persistens Plowr. 
Meidium Ranunculacearum var. Thalictri Cooke, Handb. p. 540. 
Puceinia persistens Plowr. Ured. p. 180. Sacc. Syll. ix. 312. Sydow, 
Monogr. i. 825. Fischer, Ured. Schweiz, pp. 347, 555, f. 254. 
Spermogones. Epiphyllous, in little clusters, orange. 
cidiospores. Aicidia hypophyllous, in clusters on thick- 
ened spots which are purple-brown above and yellow with a 
brownish border below, urn-shaped or subcylindrical, yellow, 
with a torn white margin; spores minutely verruculose, orange, 
14—28 uy. 
