MILDEWS, RUSTS AND SMUTS 
lOI 
The variety mentioned by Plowright, as occurring bn 
Centaurea cyanus, L., is here described under Puccmia 
cyani, Pass. 
Puccinia cirsii, Lasch. 
Uredospores. Sori scattered or clustered, minute, soon 
naked and powdery, cinnamon ; spores subglobose, ellip¬ 
tical, etc., echinulate, pale brown, 22—28 X IQ: —24 [jl. 
Teleutospcres. Sori similar to those of the uredospores, 
blackish, on both surfaces of the leaf ; spores elliptical, 
apex rounded and not thickened, scarcely constricted at 
the septum, base usually rounded, very minutely warted, 
chestnut-brown, 25—38 X 17 —25 p, epispore thin, pedicel 
very short. 
On Cirsium acaulis and C. heterophyllum. The uredo¬ 
spores have three germ-pores. 
Puccinia andersonii, B. and Br. 
Teleutospores. Sori minute, compact, usually crowded on 
circular, yellowish spots surrounded by a brown border, 
on the under surface of the leaf, blackish-violet, often 
almost concealed by the down on the leaf ; spores elliptic- 
oblong or club-shaped, constricted at the septum, smooth, 
brown, upper cell usually darkest in colour, tip rounded 
or pointed and thickened, 45—55 x 17—24 p, paraphyses 
absent. 
On leaves of Cirsium heteropliyllus (— Carduus hetero- 
phyllus). Britain, Austria, Switzerland, Denmark, -Tap 
land, Finland, and Russia. 
Puccinia cnici-oleracei, Pers. 
Teleutospores. Sori minute, circinate or in clusters on 
large circular spots on the under surface of the leaf, for a 
long time covered by the epidermis, forming pale spots 
on the opposite side of the leaf ; spores spindle-shaped or 
club-shaped, much constricted at the septum, tip rounded 
or rarely conical, much thickened, base narrowed, smooth, 
yellowish-brown, 38—56 x 15—20 p, pedicel stout, long. 
Syn. Puccinia cardui, Plowr. 
On Cirsium lanceolatum {—Carduus lanceolatus), C. 
crispus. 
CREPIS 
Puccinia major, Diet. 
Pycnidia. On yellow or reddish spots on the under 
surface of the leaf. ' 
Aecidia. On rounded spots on the under surface of the 
leaves, or in oblong clusters on the nerves and leafstalks, 
