Hong Kong Botanical Gardens, who found it on a most 
interesting expedition which he made into the Lo-fau-Shan 
Mountains, on the coast opposite Hong Kong; an expedition 
which resulted in the discovery and transmission to England 
of the plant yielding the true Cassia bark of commerce, the 
origin of which was previously unknown, though the bark 
has been in use from the earliest historical period. 
Dr. Wallich probably procured D. aduncum through his 
Canton or Macao correspondents. The name aduncum 
(hooked), of which Dr. Lindley says “why it is called 
aduncum, or whence it comes, we know not,” no doubt 
applies to the hook-like tip of the lip. 
D. aduncum flowered in Kew in July of this year, the 
specimen having been imported in the previous year. _ It 
_ was in cultivation many years ago, Dr. Lindley having 
received it from Messrs. Loddiges in 1842, and from 
Messrs. Veitch in 1846. 
Descr. Stems one to two feet long, slender, pendulous, 
at length flexuous; internodes one to one and a half inch 
long, not thickened, grooved towards the base. Leaves 
two and a half to three inches long, sessile, distichous, 
elliptic-lanceolate, acute, green above, red-brown beneath ; 
sheath nearly as long as its internode, speckled. flowers 
drooping, solitary, or in few-flowered short racemes from 
the nodes, peduncle and pedicels slender. Perianth one to 
one and a quarter inch in diameter, very concave, pale rose- 
colour, transparent. Sepals erecto-patent, ovate, acute, 
lateral falcate narrower than the dorsal. Petals oblong, 
acute. Jip smaller than the petals, white, clawed, shortly © 
boat-shaped or hemispheric, terminating abruptly in 4 
short hooked tip, villous within except on the disc, margins 
ciliate. Column very short, villous in front beneath the 
stigma, two-winged, wings crenate at the tip. Anther dark 
purple, glandular, villous in front.—J. D. H. | 
Fig. 1, Portion of sepal and lip; 2, column; 3, lip; 4, anther; 5, pollen :—all 
_ enlarged. . 
