Tas. 8121. 
SACCOLABIUM RUBESCENS, 
Annan. 
ORCHIDACEAE. Tribe VANDEAE. 
SaccoLaBlum, Blume ; Benth. et Hook. f. Gen. Plant. vol. iii. p. 578. 
Saccolabium rubescens, Rolfe in Kew Bulletin, 1906, p. 114; Orch. Rev. 
1906, p. 220; a S. ampullaceo, Lindl., caule altiore, foliis latioribus et 
subrecurvis, racemis pedunculatis, sepalis petalisque multo minoribus 
differt. 
Caulis erectus, robustus, circa 25 cm. altus. Folia patentia vel recurva, 
coriacea, oblonga, inaequaliter et brevissime biloba, 12-15 cm. longa, 
2°5-3'2 cm. lata. Scapi suberecti, 15-17 cm. longi. Racemi 7°5-10 em. 
longi, multiflori, Bracteae ovatae, obtusae, concavae, 1 mm. longae. 
Pedicelli 138-2 cm. longi. Sepalum posticum late ellipticum, obtusum, 
vix 4 mm. longum; sepala lateralia ovata, quam posticum latiora. 
Petala late elliptica, obtusa, vix 4 mm. longa. Labellum trilobum; lobi 
laterales transverse oblongi, obtusissimi, incurvi, breves; lobus inter- 
medius ovato-oblongus, subacutus, basi patens, apice incurvus, 1 mm. 
longus ; calear strictum vel subincurvum, 1 cm. longum. Colwmna 
brevissima. 
Saccolabium rubescens, Rolfe, is one of the numerous 
novelties discovered in Annam by Mr. W. Micholitz, when 
collecting there for Messrs. Sander & Sons, in 1903. It 
is allied to the North Indian S. ampullaceum, Lindl., but is 
more robust in habit, and has much smaller flowers. The 
plant figured came from the importers, and flowered at 
Kew under tropical treatment in March, 1905. Shortly 
afterwards it flowered in the Royal Botanic Gardens, 
Glasnevin. 
The genus is a large and polymorphic one, widely 
diffused in tropical Asia, where it practically replaces the 
African genus Angraecum, for though usually so different 
in the colour of the flowers, they are structurally very 
similar, and one or two African species have been de- 
scribed under both genera. Eleven species have already 
been figured in this work, and those which are nearly 
allied to the present one are S. ampullaceum, Lindl. 
(t. 5595), from N. India, 8. Hendersonianum, Reichb. f. 
(t. 6222) from Borneo, S. miniatum, Lindl. (t. 5326), from 
Java, and S. Mooreanum, Rolfe (t. 7428), supposed to 
be from Sumatra. 8S. Huttoni, Hort. (t. 5681), is now 
referred to Aérides. 
Fexsrvary Ist, 1907. 
