197 
PLEUROTHALLIS rosciroria. 
Ruscus-lhike Pleurothallis. 
GYNANDRIA MONANDRIA.—Nat. Onp. ORCHIDE Ak 
Gen. Cuar.—Labellum articulatim connexum cum basi simplici vel brevis- 
sime producta columnz. Petala 2, antica exteriorum inferne connata. 
asse pollinis 2, exsulce.—Br. 
Pleurothallis ruscifolia ; caule elongato unifolio, folio ovato-lanceolato, 
floribus in sinu folii aggregatis.—Br. 
Pleurothallis ruscifolia, Br. in Hort. Kew. v. 5. p. 211. 
Dendrobium ruscifolium, Wiitp. Sp. Pl. v. iv. p. 135. 
Epidendrum ruscifolium, Jaco. Amer. p. 226. t. 183. £. 3—Linn. Sp. Pl. 
353 
p. 1353. : 
Helleborine Rusci majoris folio, Puum. Sp. 1. 176. f. 2. 
Parasitic ; throwing out from its base many simple, whitish, waved, fi- 
brous roots. Stem 7-8 inches high, slender, erect, filiform, having 3 or 
4 sheathing scales, jointed at the extremity, where it is terminated by 
an oblongo-lanceolate, somewhat recurved, subcoriaceous, nerveless, so- 
litary leaf: from the axil of this leaf is seen to arise 2 large ovato-cor- 
date, opposite bractee, enclosing 3 or 4 simple or forked slender pe- 
duncles, scarcely an inch long, and each furnished with 2 or 3 small 
bractez. 
Flower small, pale yellow-green, erect. Petals connivent; the three outer 
ones linear-lanceolate: uppermost one 3-nerved; two anterior ones 
united, so as to form a single 4-nerved petal: two lateral petals small, 
linear, single-nerved. Lip small, lanceolate-entire, undulate. Column 
very small. Germen clavate. 
This was likewise gathered by Mr C. S., Parker in Trini- 
dad, and being preserved in spirits, I have been enabled to make 
the accompanying figure. 
We have living plants of it in our Garden, which were sent 
from the same island by the late Baron De Scnacx ; but they 
- VOL. 11. 
