ON UMBELLIFERAE 197 
69. Puccinia Smyrnii Corda. 
Heidium Bunii var. Smyrnti-Olusatri DC. Flor. fr. vi. 96. 
Trichobasis Petroselini Berk. ; Cooke, Handb. p. 529 p.p. 
Puceinia Smyrnii Corda, Icon. iv. 18, f. 67 (1840). Cooke, Handb. 
p. 563; Micr. Fung. p. 209, pl. 3, f. 55—6. Plowr. Ured. p. 199. 
Sace. Syll. vii. 670. 
P. Smyrnii-Olusatri Lindr. Faun. et Flor. fenn. xxii. no. 1, p. 9 
(1902). Sydow, Monogr. i. 416. 
Spermogones. Epiphyllous, on sunken spots. 
Ajcidiospores. Aicidia hypophyllous or occasionally epi- 
phyllous, in rather large irregular clusters, or on the petioles 
and stems in elongated groups, on yellow spots, hemispherical, 
yellow, opening by an irregular pore with a nearly entire 
margin; spores globose or ovate to fusiform or pyriform, 
delicately verruculose, yellowish, 16—40 x 16—20 p. 
Teleutospores. Sori hypophyllous, on small yellow spots, scat- 
tered or a few together, minute, 
pulverulent, dark-brown; spores 
ellipsoid to oblong, rounded at 
both ends, not thickened above, 
hardly constricted, coarsely and 
remotely reticulate and tuber- 
culate, brown, 30—48 x 17— 
26 w; pedicels hyaline, thin, de- 
ciduous, up to 604 long; epi- 
spore rather thick. Fig. 145. 
P. Smyrnii. Teleuto- 
x spores; a, as really sculptured; 
On Smyrnium Olusatrum. i sig oes iar aaa 
Rather common near the coast. 
Aicidia, A pril—June; teleutospores, June—August. (Fig. 145.) 
The ecidia and teleuto-sori may occur on separate plants or on the 
same. The markings on the teleutospore form a wide-meshed network, 
which bears wart-like tubercles at the angles of the meshes. The ecidio- 
spores bear more resemblance in form to uredospores than to what they 
really are; but they are produced in chains with intercalary cells in the 
usual way: they are not echinulate, but delicately verruculose ; the 
markings can easily be seen on an empty spore. The peridium-cells are 
grossly verrucose on the inner surface, and are not arranged in regular 
rows. It is this irregularity which causes the peridium (as is usual in 
such cases) not to split into lacinia, but to open by a pore. 
