22 MEDICAL BOTANY. 
tinct, or somewhat and irregularly polyadelphous. Anthers innate, subulate, with a longitudinal dehiscence near the 
apex ; filaments dilated at base. Ovary superior, three-celled. Ovules in pairs, pendulous. Style single. Stigma 
simple. Fruit coriaceous, one-celled by abortion, three-valved, or indehiscent, surrounded by the calyx, which has 
tough, leafy, enlarged divisions, crowning the fruit. Seeds single, with no albumen. (Griffith, Med. Bot.) 
The plants belonging to this family are large-sized trees, secreting juices which are more or less camphoraceous 
or resinoid. 
DRYOBALANOPS AROMATICA. 
GERTNER. 
D. Campuora.—Colebrooke. 
Sex. Sysr.—Monadelphia, Monogynia. 
Gen. Cuan.—Calyz leathery, five-parted, segments equal. Petals convoluted in wstivation. Stamens numerous ; 
their filaments consolidated in two rows into a cylindrical fleshy tube, longer than the ovary ; anthers almost sessile on 
the tube, linear, mucronate. Ovary superior, three-celled; ovules two in each cell, pendulous ; style filiform ; stigma 
obscurely three-lobed, papillose. Calyz of the fruit cup-shaped, with the foliaceous permanent divisions equal, distant, 
and much shorter than the three-valved nut. (Lindley.) 
Srrcir, Cuar.—It is a large-sized tree, near a hundred feet high, and six or seven in diameter. It is branched 
The eaves are opposite or alternate, elliptical, obtusely pointed, entire, smooth, three to seven inches long, and one 
to two broad, reticulated, on short petioles, with caducous stipules in pairs. The flowers are terminal and axillary. 
Flowers and fruit as in generic description. | 
This tree, the only one of the genus, is a native of Borneo and Sumatra, inhabiting the plains on the northwest 
coast of the second island, and constituting a conspicuous occupant of them. It is limited to these localities, between 
the third degree North, and the Equator. It furnishes the kind of Camphor known as Sumatra or Malayan, 
which exists in concrete masses, in longitudinal fissures, or cavities, in the heart of the tree. The cavities are a foot or 
more in length, To obtain it the trees are felled and the Camphor dug out ; a single tree yields about twenty pounds 
The Young trees also yield a volatile oil, which is called O:7 of Camphor ; this is highly fragrant. From the position 
of this oil, its ocourrence only in the younger trees, or in the older in connexion with the Camphor, which appeats to 
be deposited from it, its composition, and finally its artificial conversion into Camphor, it is regarded correctly as the 
_ basis of Camphor, Its composition is C” H, or isomeric with Ol. Terebinth. ; hence it is a true camphene. The wool 
is imbued with this oil, hence its value for its protection from insects. Sumatra Camphor differs from the ordinary 
article in the large size and flattened form of the crystals, its odour, and ready reduction to powder. It is not as vola- 
tile. Crawfurd states that this Camphor is in request among the Persians, Hindoos, and Chinese, who pay an exor 
bitant price for it. It is seldom brought to this country. ‘Two specimens in my possession, one in large white crystals, 
the other in smaller crystals, and discoloured, were brought from Canton. The medical virtues are the same as those 
of the commercial kind. Se As ey : 
Piate XIV -—Represents a branch of the tree, and the flower. 
GUTTIFERA. 
JUSSIEU. 
THE MANGOSTEEN TRIBE. 
CLUstace s.—Lindley. | 
Essent Cyr — | : | oe 
oS CHAR —Sepals two or SiX, usually persistent, round, frequently unequal and coloured ; estivation 
