466 The Philippine Journal of Science i9'3 
cuneato-quadratus, angulo superiore valde elongato, utrinque pubescens, 
supra pilosus; discus carina valde carnosa ornatus, prope basim appendi- 
cula quadrata, truncata, carnosa instructus. Colmuna brevis, 7 mm. longa, 
minute pubescens.” Ames, loc. cit. 
Stems erect, rigid, up to 56 cm high, 5 to 8 mm in diameter; 
internodes 1 to 1.5 cm long. Leaves ovate-oblong or broadly 
oblong-elliptic, 3 to 8 cm long, 2.5 to 4 cm wide, distichous, 
thickly coriaceous, rigid, retuse, apiculate; the apicule rigid, 
acute. Flowers lateral, appearing singly at the nodes opposite 
the leaves, 3 to 4.5 cm across. Pedicellate ovary twisted, 3 or 
more cm long. Sepals and petals spreading and star-shaped. 
Lateral sepals thickly coriaceous, ovate or ovate-lanceolate, 
acute, 2 to 2.5 cm long, 1 to 1.5 cm wide. Dorsal sepal similar 
in form and texture, 1.7 to 1.9 cm long, 1 to 1.4 cm wide. 
Petals thickly coriaceous, lanceolate or oblong-elliptic, narrowed 
at both ends, subacute or obtuse at the apex, 1.9 to 2 cm long, 
6 to 7 mm wide. Labellum 19 to 25 mm long, 5-lobed, adnate 
to the lower half of the column, ecalcarate, the base saccate or 
strongly concave; basal lobes erect, triangular, fleshy, 2.5 to 
4 mm high, glabrous without and minutely pubescent within; 
lateral lobes 6 to 8 mm long, up to 4 mm wide, acinaciform, 
unequally dentate at the apex, minutely pubescent on both sur¬ 
faces; middle lobe laterally flattened, about 14 to 18 mm long 
from the base of the basal lobes, 2.5 to 5 mm high, fleshy, elon- 
gate-cuneate, disc with a prominent fleshy keel which is pilose 
above. Between the basal lobes there is a quadrate, truncate 
callus which is minutely pubescent. Column stout, 7 to 8 mm 
long, minutely pubescent. 
LUZON, Manila, Bureau of Science orchid house, Bur. Sci. 
85613 Eduardo Quisumbing, August 14, 1930. Living plants 
were collected by orchid peddlers from Tayabas Province. 
Other collections in the herbarium of the Bureau of Science, 
Manila, are as follows: Biliran, Bur. Sci. 18931 McGregor 
(type), June 23, 1914. Palawan, near the shores between Ca- 
taban and Pancol, Ermitaho 17577, May, 1927. MINDANAO, 
Agusan Province, Cabadbaran, Weber 13U (this number shows 
transition to S. philippinensis ) : Davao Province, Todaya, Mount 
Apo, Elmer 12021. 
An endemic variety usually found on tree trunks at low al¬ 
titudes. Sepals and petals light cadmium on the outer surface, 
victoria lake inside, except the margins, tips, and a central line, 
which are light cadmium. Labellum rhodamine purple, except 
the white pilose hairs above the ridge and the center of the lat- 
