Tas. 8351, 
DEN DROBIUM Sanperar. 
South-eastern Asia. 
* 
OrcHIDACEAR. Tribe EprIpENDREAE. 
Denprosium, Swartz; Benth. et Hook. f. Gen, Plant. vol. iii. p. 498. 
Dendrobium Sanderae, Rolfe in Gard. Chron. 1909, vol. xly. p. 374, fig. 163; 
Orch. Rev. 1909, p. 209, fig. 17; a D. Dearei, Reichb. f., floribus majoribus et 
labelli basi lobisque lateralibus purpureo-striatis differt. 
Herba epiphytica, erecta, Cau/es elongati, infra medium paullo incrassati, 
40-80 cm. alti, striati, dense foliati, internodi 2-2°5 em. distantes. Folia 
oblonga vel elliptico-oblonga, acuta vel minute biloba, 4-5 em. longa, 
circiter 1-1-5 cm. lata. Rcemi laterales, prope apicem ramorum producti, 
1:5-2°5 em. longi, 3-4-flori, basi vaginis ochreatis brevyibus obtecti. 
Bracteae late ovato-oblongi, subacuti, membranacei, 2-3 mm. longi. Pedi- 
celli circiter 4 cm. longi, teretes. /ores magni, albi, labelli disco et lobis 
lateralibus purpureo-striatis. Sepalum posticum lanceolatum, acutum vel 
acuminatum, carinatum. circiter 3°5 cm. longum; sepala lateralia oblongo- 
lanceolata, acuta vel acuminata, carinata, circiter 4 em. longa, basi obliqua 
in mentum conicum acuminatum 2 cm. longum producta. Labellum 
trilobum, 4 em. longum; lobi Jaterales rotundati vel subtruncati, 1 em. 
lati; lobus intermedius obovatus, truncatus vel obtuse bilobus, crenulatus, 
2-2°5 cm. latus. Columna lata—R. A. ROLFE. 
The figure of the striking Dendrobium here given has 
been made from a plant presented to the Kew collection of 
orchids by Messrs. Sander & Sons, St. Albans. It is most 
nearly allied to the Philippine D. Dearei, Reichb. f., but 
differs from that species in having larger flowers which, in 
addition to some minor structural points, are marked by the 
presence of purple stripes on the side lobes and base of the 
lip. Introduced to cultivation only in 1909, sufficient time 
has hardly yet elapsed to admit of a definite judgment as to 
its cultural requirements. So far it has thriven well at Kew 
under the treatment that answers for D. Dearei ; tropical 
conditions with plenty of water both at the root and over- 
head while new growths are being formed, and rest in a 
dry atmosphere afterwards. The imported plants have 
flowered in October, but it is possible that when the species 
has become established in this country they may flower in 
spring. 
December, 1910. 
