rapidly the knowledge of Pleurothalloid Orchids is being 
_augumented by discoveries in New Grenada and _ the 
neighbouring States of America (Costa Rica and British 
Guiana), there is every reason to suppose that this new 
genus will prove to be a very considerable one. Its 
distinctive characters are the superior lip, the free or all 
but free dorsal sepal, the lateral sepals connate in a boat- 
shaped form under the lip, and the strongly recurved 
crumpled lip. 
Mr. Watson informs me that 8. pulvinare was received 
at the Royal Gardens from Mr. Veitch in 1888, and that 
in January last it formed a raceme now (November) 
twenty-seven inches long, which has borne thirty-seven 
flowers, and is still flowering. He adds that this plant 
will probably flower continuously for two years ! 
_ Desor. Stems tufted. Leaves coriaceous, four to six 
inches long, elliptic- or ovate-lanceolate, acute, bright green, 
Seven to nine nerved, narrowed into a stout channelled 
petiole as long as the blade. Peduncle with the raceme 
one to two feet long, flowering continuously, very stout, 
closely warted, dark brown ; sheathes half an inch long, 
tubular with truncate acute mouths; bracts like the sheaths; 
pedicel warted with the smooth ovary sigmoidly curved. 
Flowers sub-horizontal, an inch long, yellowish, closely 
mottled with dull red, coriaceous ; dorsal sepal inferior, lan- 
ceolate ; lateral connate into a broad boat-shaped limb with 
a terete grooved rough dagger-like point, margins erose; 
disk with a very large oblong longitudinally cleft callus. 
Petals very small, hatchet-shaped. Lip revolute, undulate, 
twice constricted on the serrulate margins, disk with two 
toothed linear calli about the middle. Colwmn incurved 
- putes and there somewhat crested at the back.— 
~ 
2 He 1, Connate Jat. 1 ser x 4 : 1; 
3, petals, column, and lip; Selai ask ab, ote 
. linia :—all enlarged, 
4, column and lip; 5, column; 6, anther; 7, Po’ — = 
