NEW AND RARE BRITISH FUNGI. 
53 
with a smooth equally thick epispore, 17 to 24 mk. in diameter, 
sometimes as much as 40 mk. long, by 13 to 16 mk. wide. 
I. On Ranunculus repens and R. ficaria. 
II. and III. On Poa trivialis and pratensis. 
Extremely abundant in all parts of Great Britain. 
255. Puccinia hydrocotyles, ( Pers .) Qrevillea ix., 14. Coeoma hydro- 
cotyles , Link. sp. plant ii., p. 22. 
II. Uredospores. Sori small, scattered, principally upon the 
upper surface of the leaves ; sometimes in circular groups, clus- 
tered round a larger central sorus ; rarely confluent, rarely cauline. 
Spores irregularly oval, subglobose, or obovate, 20 to 30 mk., finely 
echinulate, pale brown. 
III. Teleutospores. Mixed with the uredospores, oblong or 
ovate, slightly constricted, on moderately long, hyaline, firmly- 
attached pedicels ; brown, upper cell generally larger and rounded 
above, 40 to 45 mk. long, by 20 to 25 mk. wide. 
Epping Forest. Oct., 1882. 
256. Puccinia, pexplexans, Plow. 
I. pEcidiospores=y£cidium Ranunculi acridis. 
II. Uredospores. Sori elliptical elongate, or linear on both 
surfaces of the leaves, but especially on the upper, sometimes con- 
fluent, soon exposed by the rupture of the cuticle. Spores globose 
oval or subovate, golden yellow, finely echinulate, 30 to 35 mk. 
long by 20 to 25 mk., wall with or without capitate paraphyses. 
III. Teleutospores. Sori small, sometimes punctiform, but 
generally elongate linear or elongate oval. Covered by the 
cuticle, black, often clustered, sometimes confluent. Spores very 
irregular in form and size. Pedicels very short, oblong, subfusi- 
form or clavate; upper cell rounded, truncate or attenuated, often 
obliquely ; central constriction little or none, lower cell generally 
wedge-shaped, brown, smooth, epispore often apparently granular, 
40 to 60 mk. long by 10 to 12 mk. wide 
I. On Ranunculus acris. 
II. and III. On Alopecurus pratensis. Avena elatior and Poa 
sp? 
Near King’s Lynn. May and June, 1883. 
257. Puccinia Magnusiana, Kron. 
I. s£cidiospores=sLzcidium Ranunculi repentis and bulbosi. 
II. Uredospores. Generally on small elongated pale yellowish 
spots, small elliptical lanceolate or linear, yellow, spores roundish, 
obovate or oblong, finely echinulate, orange yellow, 21-35 x 12 
X 201 mk., mixed with paraphyses. 
III. Treleutospores. Sori on small yellow, often confluent, 
spots, very numerous, scattered small, rather pulvinate, elliptical or 
linear on the stems often forming very long blackish lines. Spores 
on rather long firmly attached pedicels, oblong or clavate, 
