Disperis.'] 
orchidejE. (S. Moore.) 
331 
1. D. oppositifolia, Smith in Bees ’ Encyc. Tubers oblong, about 
\ iu. in length. Stem slender, erect, 4-9 in. high. Leaves opposite, 
lanceolate or ovate-lanceolate, subcordate at the base, 1-2 in. long, 
about y in. broad, a solitary pair on each stem at about f of its distance 
from the ground, with a basal, cordate, long-petiolate pair which soon 
withers away. Flowers few together; bracts ovate, leaf-like, in. 
in length. Lateral sepals spathulate, united for the lower two-thirds, 
each with a shallow pouch near the point of union. Limb of labellum 
ascending, broadly-cuneate, 3-lobed, pubescent ; lobes linear, subequal, 
the lateral diverging. Arms of the anther short, parallel. Lindl. Gen . 
and Sp, Orch. 37l. Dryopeia oppositifolia, Thouars , Orch. Afr. 1. 1 ; Mich. 
Orch. Maur. 35. 
Mauritius, woods near the summit of the Pouce, Ayres ! Quartier Militaire 
and Anse Courtois, Bojer. Also Bourbon. 
2. D. tripetaloides, Lindl. Gen. and Sp. Orch. 371 (in part). Tubers 
oblong-ovoid, less than % in. long. Stem 4-6 in. high, ascending. 
Leaves usually two on each stem, alternate, cordate, somewhat am- 
plexicaul, f-1 in. long, | in. broad. Infloresence as in _D. oppositi- 
folia. Lateral sepals spathulate-oblong, acute or cuspidate, free, with 
a small pouch near the centre. Limb of labellum clavate, reflexed, 
with an ovate pulvinus at the point of reflexion ; apex shortly 2-lobed, 
the broad sinus between the lobes pubescent. Arms of the anther as 
in D. oppositifolia. Dryopeia tripetaloides, Thouars , Orch. Afr. t. 3; 
Bich. Orch. Maur. 36. 
Mauritius, the Pouce, Ayres ! Savanne and Nouvelle Decouverte, Bojer. Also 
Bourbon and Galega. The Ceylon plant referred by Bindley to this species is 
evidently different. 
3. D. cordata, Sun. in Kongl. Vatens. Acad. 1800, p. 220. Very 
much like D. tripetaloides , but the flowers appear to be smaller, the 
lateral sepals are lanceolate and united halfway up, and the pulvinus 
on the limb of the labellum is transversely elongated. Dryopeia 
discolor, Thouars , Orch. Afr. t. 2 (?) 
Mauritius, round Grand Bassin and at the cascade on Biviere Noire, Bojer. 
Seychelles, Mahe, Perville ! Endemic. I have had no flower for examination. 
Swartz describes in these words the only Mascarene species known in his day ; 
“ Caule diphyllo, multifloro, foliis cordacis, glabris, floribus distinctis,” which suits 
well either with this or the last species, and might even he intended for D. oppositifolia. 
It would appear that Bindley was not justified in referring the Dryopeia discolor of 
Thouars to Swartz’s plant, since the latter’s type was not seen by him ; as, how- 
ever, I am not in a position to solve this doubt, I have thought it better to retain 
a familiar nomenclature. 
2. SATYRIUM, Sw. 
Sepals and petals spreading, subequal. Labellum posticous, 
larger than the other perianth-segments, entire, hooded over the 
column, 2-saccate or 2-spurred. Column short or elongate. Anther 
