Leptopuccinia. 217 
described by Link (“ Sp. Plant.,” vol. vi. pt. ii. p. 74), which has very 
short pedicels, and occurred on Tussilago alpina and Centaurea 
alpina. It may be Fuckel’s P. cirsiz. 
Puccinia buxi. D.C. 
Teleutospores —-Sori chestnut-brown, compact, hemispherical, 
cushion-shaped, soon naked, amphigenous. Spores oblong or 
elliptical, deeply constricted, upper cell obovate, apex rather 
thickened, lower cell attenuated below, cuneiform, generally 
longer than the upper, brown, smooth, 55-90 X 25—-35y. 
Pedicels very long. 
Synonym. 
Puccinia buxi. D. C., “ Flore frang.,” vol. vi. p. 60. Winter 
in Rabh., “Krypt. Flor.,” vol. i. p. 164. Sow., t. 439; Berk., 
“Eng. Flor.,” vol. v. p. 369. Cooke, “ Hdbk.,” 508; “ Micro. 
Fungi,” 4th edit., p. 212. 
LExsiccati. 
Berk., 109. Cooke, i. 52; ii. 140. “L. F” 23. Vize, 
“Fungi Brit., 11. 
On Buxus sempervirens. 
April to May. 
BioLocy.—The spores have a tendency to fall in halves at the 
septum. The sori occur on both surfaces of the leaves, and are accom- 
panied by slight yellowish or brown discolorations. Schréter was 
unable to get this fungus to reproduce itself by applying the promy- 
celial spores to the foliage of box plants.’ It seems to me probable 
that the germ-tubes enter the leaves and give rise to a mycelium 
which remains in a quiescent state until the following spring. This, 
however, is only an opinion, and has not been proved by experimental 
culture. 
Puccinia annularis. (Strauss). 
Teleutospores—Sori small, compact, round, confluent in subrotund 
patches, hypogenous, at first greyish brown, then cinnamon, 
at length brown from the rupture of the epidermis. Spores 
oblong, slightly constricted in the middle, summits rather 
strongly thickened, rounded, rarely truncate, sometimes attenu- 
