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APPENDIX. 225
confluent ; sporidia ovoid or subglobose, orange. — On leaves of
Tropccohm aduncum. Sliere. October, 1SG5. {l)r. Caprou.)
Trichobasis fallens, Cooke. Clovee, Eust; spots obliterated
;
sori amphigenous, numerous, scattered, subrotuud,
brown, surrounded by the remains of the ruptured epidermis ;
spores sub-ovate ; pedicels short, hyaline, evanescent ; epispore
verrucose. Uredo fallens, Desmz.— On leeaves of Clover, &c.
September. Not uncommon.
Uromyces graminura, Cooke. CocKsrooT Rust ; epiphyllous
sori
; oblong or confluent and linear, convex, black and
shining, so as easily to be confounded on casual observation with
Dothidea graminis, at length bursting longitudinally ;_
sporidia
subglobose or ovate, tawny, with hyaline pedicels of variable
length. — On leaves of BacUjlis glomerata. Shore. October, 1865.
{Dr. Capro7i.)
Uromyces concentrica, Lev. Described at p. 208 as
TricJiobas'is Scillanm, B. ;
but it appears to be a good Uromyces,
and has been placed in that genus by Levielle.
Uromyces sparsa, Lev. Sandwort E,ust; spots pallid;
sori sub-rotund 'and oval, amphigenous fand. cauline ; epidermis
erumpent ; sporidia ovoid, brownish ; peduncles thickened, short.
— On Spergularia rubra. Swanscombe Marshes. June, 1865.
Uromyces Polygon!, Puckel. Knotgrass Rust cauline
; ;
sori elongated and confluent, convex, surrounded by the remains
of the ruptured epidermis; sporidia sub-globose or globose, smooth,
yellowish-brown ;
pedicels very long, thickened, hyaline, persistent.
'Capitularia Folygoni, Rabh.—On the stems of Polygonum aviciilare.
October. Common.
Cystopus spinulosus,De Bary. Thistle (White) Rust ;
conidia in time much elongated ;
sori erumpent on both surfaces
of the leaves, white ; oospores globose ; epispore brown ;
tubercles
minute, solid, very prominent, often acute and spinulose.—On
Thistles. Bungay, Suffolk. September, 1865.
Peronospora Candida, Euckel. Primrose Mould ;
densely ca^spitose, white threads
;
erect, dichotomously branched;
ultimate branchlets short, spreading ; sporidia ovate.—On leaves
of Primrose. Near Corwen, N. Wales. July, 1S6G.
Q