122 Mildews, rusts and smuts 
ened, slightly constricted at the septum, base rounded or 
slightly narrowed, smooth, or almost smooth, brown, 28— 
50 X 18—25 (jL, pedicel colourless, slender, deciduous. 
Syn. Puccinia hullata, Schroet.; Plowr., Ured., p. 183 
(in part). 
On Aethusa cynapium, and parsley, Petroselinum sati¬ 
vum. Britain and Europe generally. 
PEUCEDANUM 
Puccinia peucedani-parisiensis, Lindr. 
Uredospores. Primary; sori generally on the under 
surface of the leaf, mostly on the veins and leafstalks, 
forming long patches, cinnamon. Secondary; sori very 
minute, scattered, for a long time covered by the epider¬ 
mis, brown, on the under surface of the leaf ; spores sub- 
globose or elliptical, very minutely echinulate, tip more 
or less thickened, base also thickened, yellowish, three, 
rarely four germ-pores. 
Teleutospores. Sori minute, on the under surface of the 
leaf, or crowded into long patches on the leafstalks, powdery, 
dusky ; spores elliptic-oblong or elliptic club-shaped, tip 
rounded, scarcely thickened, slightly constricted at the 
septum, base slightly narrowed, minutely warted in lines, 
brownish, 35—52 x 19—28 p, pedicel slender. 
Syn. Puccinia hullata, Schroet.; Plowr., Ured., p. 183 
(in part). 
On Peucedanum. Britain and Europe. 
Puccinia bullata, Winter; Plowr., Ured., p. 185 (in part). 
Uredospores. Primary ; generally on the veins and leaf¬ 
stalks, forming elongated patches, cinnamon. Secondary ; 
on the under surface of the leaves, rarely on the upper 
side, sori scattered, minute, brown ; spores subglobose or 
elliptical, echinulate, brown, tip more or less thickened, 
25—^40 X 18—28 p, three, rarely four germ-pores. 
Teleuto spores. Sori resembling those of the uredospores, 
dusky ; spores elliptical or oblong-elliptical, tip rounded, 
scarcely thickened, slightly constricted at the septum, base 
rounded or slightly narrowed, smooth, brown, 28—^42 x 
18—22 (JL, pedicel slender, colourless. 
On Silaus pratensis and Peucedanum. Britain, Europe, 
Asia Minor, N. America. 
The old Puccinia hullata of authors is a collective species, 
combining several forms that are separable when the in¬ 
fection method is followed. 
