ee 
244 PUCCINIA 
round uredospores, but most of the other biological races of P. Aibesit- 
Caricis have them oval or oblong. There is no remedy for this disease on 
the Gooseberry but to gather and burn all diseased leaves and fruit, etc., 
and even this will be of no avail so long as the affected Carices continue 
tu exist. Luckily the disease rarely does much harm, 
110. Puccinia dioice Magn. 
cidium Cirsti DC. Flor. fr. vi. 94. 
Puccinia dioicae Magn. Tag. Nat. Vers. Miinchen, 1877, p. 200. Plowr. 
Ured. p. 173. Sace. Syll. vii. 629. Sydow, Monogr. i. 653. 
Fischer, Ured. Schweiz, p. 283, f. 208. 
Spermogones. In little clusters, honey-coloured. 
Acidiospores. Bcidia hypophyllous, on roundish yellow or 
brownish spots, in clusters 2—5 mm. diam., 
cup-shaped, with torn white margin; 
spores delicately verruculose, orange, 18 
—25 mw 
[Uredospores. Sori scattered, minute 
punctiform, brown; spores globose to 
ellipsoid, echinulate, pale-brown, 18— 
ic Q5 pe. 
Teleutospores. Sori scattered, roundish 
Fig, 188. P. dioicae, oblong, 1 mm. long, soon naked, sur- 
Hcidia on C. pratense, rounded by the cleft epidermis, pulvinate, 
pen tia black; spores clavate, rounded or conical 
and much thickened (up to 14y) above, 
gently constricted, tapering below, smooth, brown, darker at 
the apex, 85—56 x 14—20 u, occasionally 70 long; pedicels 
brownish, persistent, as much as 50 pw long.] 
Aeidia on Cirsium palustre, C. pratense, and (on the conti- 
nent) on other species of Cirsium, June, July; uredo- and 
teleutospores on Carex dioica, C. Davalliana(?). Very rare; 
Scotland, Ireland. I have not seen the teleutospores. (Fig. 
188.) 
DistRiBuTION: Northern parts of Europe. 
