DIPTEROCARPACEÆ. 217 
Bzumr,' in 1825, established this small family, since then admitted 
by all botanists.® Before him the known genera which belong to it 
were placed by A. L. pr Jussrev* in the order of Guttifers ; LINDLEY, 
who left them in his Guttiferal Alliance, included in it the genera 
Dipterocarpus, Anisoptera, Dryobalanops, Vateria, Vatica and Hopea. 
Enpuicuer placed beside them Zophira, considered by several authors 
as the type of a distinct group,‘ because of the mode of placentation 
of the one-celled ovary. He re-included in the genus Vatica, Rox- 
BURGH’S Shorea, now considered as distinct; since then the English 
botanists have added to the family the three genera Doona,’ Mono- 
porandra and Pachynocarpus} and have incorporated there the 
Ancistrocladus of Wauuticu,* of which it had also been proposed to 
make a distinct family.’ This exceptional type has affinities with 
Lophira, the Hugoneea, Symplocee,” Gyrocarpee, Combretacee,” &e. 
Apart from this genus and Zophira, which recalls in certain respects 
the Clusiacee, and Hypericacee with one-celled ovary, the whole of the 
group is certainly nearly allied to Zihacee and Ternstremiacee. 
From the former it differs principally by the imbricated præfloration 
of the calyx, the form of the receptacle, which is often concave, 
being slightly perigynous, the organization of the seed and the 
development which is frequent in the sepals round the fruit. These 
latter features separate it pretty clearly in most cases from the 7erx- 
stramiacee,” the calycinal præfloration of which is the same. In 1846 
Linpzey reckoned forty eight species of Dipterocarpacee ; a hundred 
are now admitted, all natives of the warmest regions of Asia and 
tropical Oceania, except three or four belonging to Western or Central 
Africa. All are trees or shrubs with resinous or camphorous juice, 
sometimes climbing, with alternate penninerved leaves, entire or finely 
crenate. The stipules are small or wanting, sometimes very large 

1 Bijdr., 222 (Dipterocarpeæ). 5 Cat., n. 1052 (1828). 
2 Enpu., Enchirid. (1841), 525, ord. 215; 
Gen., 1012, ord, 213 (Dipterocarpee).—LINDL., 
Veg. Kingd. (1846), 393, ord. 141 (Dipteraceæ). 
—B. H., Gen., 189 (1862), ord. 29.—A. DC., 
Prodr., xvi. 604, ord. 29 ter. 
3 Gen. (1789). 
4 Lophiracee ENDL, Gen., 1014.—LINDL., op. 
cit., 395. —A. DC., Prodr., xvi. 638. 
5 Tuw., in Hook. Lond. Journ., iii. (1844). 
5 Tuw., in Hook. Lond. Journ., vi. (1847). 
7 Hook, Fr, in Zrans. Linn. Soc, xxiii. 
(1860). 
9 Pu, Ess, Monogr. of a New Fam. de PI. 
prop. under the name of Ancistrocladee [in Ann. 
Sc. Nat., sér. 3, xiii. (1849), 316]. 
10 Pr, loc, cit., 319. 
1 Onty., Fl. Trop. Afr., i. (1868), 175. 
2 «A Ternstræmiaceis Dipterocarpee differ. 
imprim. calyce fructif. sæpiss. aucto et sem. solit. 
exalbum., cotyl. magn. crass., id quod in illis, 
nisi in paucis gen. inter Gordonieas, non obser- 
vatur.” (B. H., loc. cit., 190.) 
