ON UMBELLIFERZ 195 
67. Puccinia Cherophylli Purt. 
Pucceinia Chaerophylli Purton, Midl. Flor. iii. 303. Sydow, Monogr. 
i. 367. Fischer, Ured. Schweiz, p. 129, f. 98. 
P. Pimpinellae Str. ; Plowr. Ured. p. 155 p.p. 
Spermogones. Pale-yellow, roundish. 
4icidiospores. Aicidia on the leaves and petioles, on the 
leaves scattered or circinate, on the petioles and nerves in 
dense elongated clusters and causing a slight hypertrophy, 
between cup-shaped and pustulate, yellowish; peridium poorly 
developed ; spores verruculose, orange, 18—35 x 16—26 u. 
Uredospores. Sori hypophyllous, scattered, minute, roundish, 
pulverulent, cinnamon ; spores globose to obovate, echinulate, 
pale brownish-yellow, 20—30 x 18—25; with three usually 
equatorial germ-pores. 
Teleutospores. Sori similar, but black-brown, on the petioles 
more elongated ; spores ovate to oblong, 
rounded at both ends or gently at- 
tenuated below, not thickened above, 
slightly constricted, reticulated, yellow- 
ish-brown or brown, 24—36 x 16—25 p; 
pedicels hyaline, thin, as long as the 
spore or shorter. 
On leaves, petioles, and stems of 
Anthriscus silvestris, Chaerophyllum pig. 143. P Chuerophylli. 
temulum, Myrrhis odorata. -Not com- Teleutospores, a, on 
a Anthriscus, b, on Myr- 
mon. Aicidia, May and June; teleuto- rhis. 
spores, July—October. (Fig. 143.) 
It was proved experimentally by’ Klebahn that this parasite is not 
identical with P. Pimpinellae, and by Semadeni that it is not identical 
with that or with P. Heraclei. The latter also reared spermogones and 
zecidia from the basidiospores, and uredo- and teleutospores from the 
zcidiospores, of P. Chaerophylli; thus proving that all the spore-forms 
described above belong to the same species. The feeble development of 
the peridium and the pustule-like, not cup-shaped, xcidia are paralleled 
by those of P. Heracler. ‘The markings on the teleutospore are formed by 
a network of low ridges, with small polygonal or roundish meshes. The 
spore-reticulation is exactly of the same character as that of P. Pimpinellae 
except that the meshes are a little smaller and not quite so easily seen. 
13—2 
