Tas. 8761. 
BULBOPHYLLUM soctrAte. 
Sumatra. 
ORCHIDACEAE. Tribe EPIDENDREAE. 
Bu.sopuyiium, Thouars ; Benth. et Hook. f. Gen. Plant, vol. iii. p. 501. 
Bulbophyllum sociale, Rolfe; species nova, E. galbino, Ridl., affinis, racemis 
4-5-floris et florum segmentis convergentibus nec patentibus differt. 
Herba epiphytica. Rhizoma repens, validum, vaginis membranaceis ovatis 
subacutis striatis imbricatis vestitum; pseudobulbi distantes, ellipsoideo- 
oblongi, compressi, 6-7 cm. longi, 2°5-8 cm. lati, basi vaginis ovatis 
acutis obtecti, monophylli. Folia petiolata, elliptica vel elliptico-oblongs, 
apice subacuta et recurva, subcoriacea, 12-19 cm. longa, 5-7 cm, lata ; 
petioli 2-2°5 em. longi. Scapi erecti, 10-11 cm. longi, basi vaginis ovatis 
acutis obtecti: racemi circiter 5-flori; bracteae elliptico -]lanceolatae, 
acutae, concavae, 1°5-2 em. longae; pedicelli 2-8 cm. longi. Flores 
speciosi. Sepalum posticum erectum, elliptico-lanceolatum, acuminatum, 
3-8°5 em. longum, concavum; sepala lateralia subconniventia, basi 
elliptico-ovata, apice attenuata et acuta, 3-3°5 cm. longa. Petala sub- 
conniventia, triangulari-ovata, acuta, subfalcata, 1°3-1°5 cm. longa. 
Labellum longe unguiculatum ; unguis incurvus, oblongus, basi subdila- 
tatus, 0°6-0°7 em. longus; limbus recurvus, cordato-ovatus, subobtusus, 
carnosus, circiter 1°5 cm. longus. Colwmna lata, 4 mm. longa, dentibus 
late tringularibus subacutis.—R. A. Rotrr. ~ 
The history of this Orchid is somewhat singular. In 1908 
a large clump of Bulbophyllum Ericssonii, Kranzl., from the 
collection of the Hon. Walter Rothschild was purchased 
for the Kew collection. Since then it has produced 
flowers on various occasions; these have agreed with 
the description of B. Evicssonii by Dr. Kranzlin in the 
Gardeners’ Chronicle in 1893, and with the figure of 
that species at t. 8088 of the present work from a plant 
belonging to the collection of the late Sir Trevor 
Lawrence. In July, 1916, however, the clump produced 
a different inflorescence, which showed that it includes 
a second species, so similar in habit to B. Eriessoni 
that its presence had remained unsuspected. The figure 
now published was prepared from the inflorescence in 
question, and its comparison with our t. 8088 will show 
Aprit-JuneE, 1918. 
