Fleteropuccinia. 173 
Taraxacum, one of which belongs to P. variabilzs, and the other to 
P. sylvatica 
The two zcidia on Taraxacum have both been found by Mr. Soppitt, 
who kindly sent me specimens ; one has numerous small clusters of 
pseudoperidia scattered over the leaves = 4c. grevillei, Grove. This 
Mr. Soppitt laid upon a plant of Taraxacum, and in a fortnight he 
found the Taraxacum affected with Puccinia. I have repeated this 
experiment with zcidiospores found near King’s Lynn with success. 
In the other zcidium (P. sy/vatice) the pseudoperidium occurs in 
large clusters, and is the one described above. 
The teleutospore host-plants are those given by Schriter in Cohn’s 
“Krypt. Flor. von Schlesien,” vol. iii. p. 328, 
Puccinia dioice. Magnus. 
icidiospores—Spermogonia in small crowded groups, yellow. 
Pseudoperidia in one or many circles, crowded on roundish 
spots, flat, with torn white edges. Spores orange-yellow, as 
much as 25 in diameter. 
Uredospores—Sori small, chestnut-brown, roundish. Spores glo- 
bose, elliptical, or ovate, as much as 25m long, pale brown, 
echinulate. 
Teleutospores—Sori thick, roundish, persistent, black, pulvinate. 
Spores clavate, apex much thickened, rounded or pointed, 
constriction slight, base attenuated, smooth, brown, 
35-55 X 17-20. Pedicels persistent, 40 long. 
SYNONYMS. 
Puccinia dioica, Magnus, Tagebl. der Naturf, vers. zu Miinchen 
(1877), p. 200. Schrot., “ Krypt. Flor. Schl.,” Pp. 329. 
Hadium cirsit, WD. C., “ Flore frang.,” vol. v. Pp. 94. 
AEcidiospores on Carduus palustris, July—Professor J. W. H. 
Trail. 
Teleutospores on Carex dioica, davalliana. 
BioLocy.—Schréter worked out the biology of this species in 
1880 (“Krypt. Flor. Schl.,” vol. iii. p. 330), by placing the teleuto- 
spores of P, dioice on Cirsium oleraceum. Johanson and Rostrup, in 
June, 1883, during an excursion in Jutland, found the ecidium on 
C. palustris, lanceolatum, and arvense, growing in company with 
P. dioice. The teleutospores have not at present been found in 
Britain, but Professor Trail found the zecidiospores in July. 
