DR. ROXBURGH ON THE GENUS AQUILARIA. 201 
ovate, obtuse, spreading. Corol none. Nectary of 10, oblong, obtuse, hairy scales, which 
are inserted into the mouth of the tube of the calyx, alternate with the filaments, slightly 
incurved, so as to form a dome over the germ, its mouth being shut up with the stigma. 
Filaments 10, shorter than the nectarial scales, coloured reddish at top. Anthers erect, 
oval, 2-lobed. Germ superior, ovate, smooth, 2-celled, each cell containing a single oblong 
ovule, attached to the partition above its middle. Style short and thick. Stigma large, 
glandular, obscurely 2-lobed. Capsule drupaceous, clavate-turbinate ; length rather above 
an inch, and the diameter about half the length; of a soft fleshy texture, and villous over 
the surface, like a peach; colour olive-green, its contracted base embraced by the perma- 
nent calyx; 2-valved, opening round the apex (like the envelope of the nutmeg) ; 2-celled, 
partition opposed to the valves: one of the cells is generally abortive. Seed solitary, oval, 
with a large, straight, spongy, pointed horn from the base, which is about as long as the 
body of the seed. Integuments 4. Exterior, while recent, soft and white, when dry, dark 
brown and villous on the outside. It is a continuation of this envelope which forms the 
horn of: the seed; on the inside a vertical, brown groove, in which the filiform umbilical 
cord is lodged, which connects the apex of the horn to the top of the partition; second, 
. while recent, thick, and hardened at the base only, which is pointed and projects a little 
into the spongy horn; when dry, dark brown, smooth, hard and brittle; on its inside a 
slight groove is also observed, corresponding with that of the exterior integument; third, 
soft, brown, and rather spongy; fourth, or innermost, a thin pearl-coloured membrane 
adhering to the embryo. [Note. The last two not easily detected in the fresh seed, 
but when dry very conspicuous.] Perisperm none. Embryo inverse, when dry very 
pale yellow. Cotyledons conform to the seed. Plumula 2-lobed. Radicle subrotund, 
superior. ! À ; 
The foregoing is a faithful description of the tree which blossomed in this Garden in 
March and April 1809 and 1810. And that of the pericarpium and seed is not only taken 
from that which the same tree produced, gathered with my own hand, but also from some 
seeds which Dr. Buchanan sent from Goolparah, on the banks of the Megna or Brachma- 
putra, to Sir John Royds, who obligingly parted with them to enable me to render my 
account of this interesting tree more satisfactory; and again in 1810, from Mr. Richard 
Matthew Smith, of Silhet, gathered from a tree growing in his own garden at that 
lace. | 
i At present it is not possible for me to affirm that this is the tree which produces the 
real Calambac or Agallochum of the ancients, but there seems more reason to think it 
went to the westward from our eastern frontier, than to suppose it was carried from 
Cochin China, or any other country in the vicinity of China, where it has always been 
held in the highest estimation. Small quantities are sometimes imported into Calcutta 
from the eastward ;' but such is always deemed inferior to that of Silhet. 
There is a wonderful agreement between the various but imperfect accounts of the 
trees said to produce this valuable drug, and that which I have now described and 
figure , 
gre: description of the specimen * presented to him by Sonnerat agrees almost 
* Garo de Malacca, Lamarck, Encycl. i. 49. 
2 
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