^ 
344 CORRESPONDENCE. 
minute tubercles.—Highbeach and other parts of Epping, from July 
to September, 1863 and 1864.—Closely resembling Uredo Hydroco- 
tyles, Mont., and U. Hydrocotyles, Ravenal. The former found in Chili 
and France, the latter in South Carolina. The presence of distinet 
peduncles in the early stage of our plant is evidence of its not being à 
true Uredo. 
TRICHOBASIS PARNASSIA, n. sp. Acervulis amphigenis, bullatis, 
demum erumpentibus, sparsis, rotundatis, confluentibusque. Sporis 
globosis vel subovatis, fuscis. ab. in foliis Parzassie.—On bot 
surfaces of the leaves. Sori at first bullate, at length rupturing the 
epidermis, scattered, often confluent. Spores globose, or nearly so, 
rather large, tawny-brown. This species was only found on a small 
marsh, beside the river, near Irstead church, N orfolk, September, 
1864. Thousands of plants of Parnassia palustris on other an 
neighbouring marshes, failed to yield a single specimen of this Tricho- 
basis. 
- TRrcHOBASIS RHAMNI,n. sp. Maculis flavidis. — Acervulis hypo- 
phyllis, rotundatis, minutissimis sparsis vel aggregatis. Sporis sub- 
globosis, tandem dilute ferrugineis. Hab. in foliis Rhamni. Autumn.— 
Seated on definite yellowish spots. Sori occurring only on the under 
surface of the leaves, scattered or collected in clusters, very minute, 
roundish or oblong. Spores at length rusty-brown, subglobose.— 
Found on the leaves of Rhamnus catharticus, at Selsdon, Surrey, Sep- 
tember 16, 1864 (Mr. A. Grugeon).—This is a very distinct species, 
both in the definite spots on which the pustules are seated and in the 
very minuteness of the pustules themselves. 
CORRESPONDENCE. 
Double Orchids. 
Rye Lane, Peckham, S.E., October 4. 
I observe in the last number of the Journal (p. 319) that Dr. Moore is inter- 
ested in the double-flowered Orchis Morio, mentioned on my authority in your 
list of double flowers. Will you allow me to say that the list I sent you was 
in great measure a compilation from various sources ; that I personally have 
not seen a double-flowered 0. Morio, but cited it from Jacob’s ‘Catalogue of 
Faversham Plants’ (1777), one of the earliest local Floras of this country? At 
p. 75 of that work, it is mentioned that “in a meadow near Cades, in Ospringe, 
7 
