f^attrcmja] XVI. TERNSTE<EMIACE^ 63 



B. Flowers mostly on the old wood, in trichotomous cymes, bracts in pair^ 

 at all tlie ramifications. 



3. S. Roxburghii, Wall.; Kurz, F. Fl. 103. Vern. AiiU gogen^ Nep. ; 

 Thit ngayan, Burma. 



A middle-sized evergreen tree, tlie young parts covered with a mealy scurf, 

 intermixed with minute scales. Leaves 8-12 in. Cymes haiiy, many-ilowered, 

 bracts deltoid, acute. Fl. | in. diam., stamens oo, styles 3-5. 



Sikkim, Terai and outer valleys, ascending to 4,000 ft., Assam, Khasi liillb, Manipui^ , 

 Chitfcagong, hills east of Toungoo, 2,000-6,000 ft. Uppei' Burma, 1,500-3,000 ft. Fl . 



. O.J Jti. o. 



4. S. fasciculata, Wall. PI. As. Ear. t. 148. Sar^e go gen, Nep. Nepal, Sikkim, 2,000- 

 5,000 ft. A small tree. Leaves ferrugineo-tomentose beneath. Fl. J in. diam., white, 

 afterwards pink. 5. S. ptnLduaiia, Wall. Sikkim, Terai, and outer valleys, ascendina^ 

 to 6,000 ft., Upper Assam, Khasi hills, Manipur, Burma. Cymes many-flowered, rami£- 

 cations densely covered with acute scales, bracts broad-ovate. Fl. } in. diam. 6. S. 

 tristyla, DO. ; Malay Peninsula, said to extend north, into Tenasserim. Leaves spinulose- 

 berrate, 7-10 in. Fl. unisexual, | in. diam., on slender pedicels, in fascicles of 2-6 

 mostly on the old -wood, petals white, stamens 20, styles 3, rarely 4. 7. S. manrotriclia, 

 Kurz, F. Fl. i. 106. Assam, Khasi hills. Upper Bnrma. Branchlets, petioles and under 

 side of leaves densely clothed with long stiff hairs. Leaves narrow-lanceolate, serraturoh 

 setose, secondary nerves 12-15 pair, arcuate. Fl. red. 8. S. cerea, Griff. {S. arcitafa^ 

 Kurz, F. Fl. i. 103). Bhutan, Upper Burma. Young parts covered with appressed hard 

 sliarp scales. Leaves obovate, blade 8-10 in , jDetiole J-J in. Fl. 1 in. diam., petalb 

 waxy, white, base blood-red. 



Stachytirus liimalaicus, Hook. £.1. & Thorns., Himalaya, from Nepal eastwai^ds, 5,000- 

 8,000 ft., Manipur, China, is a small tree or extensively scrambling shrub, glabrous, 

 fl. tetx-amerous, in short lateral spikes on long pendulous branches. Stamens 8, ovary 

 4-celled, style simple, stigma capitate-peltate, ovules many. Berries J in. diam. 



Ordek XVIT. DIPTEROCARPACE^. Gen. PI. i. 189, 



{Dipterocarpece,) 



(Brandis in Journal Linnean Society, vol. xxxi, (1895) p. 1.) 



Eesinous treeSj rarely shrubs, mostly evergreen. Leaves alternate, stipulate, 

 simple, penniveined, generally coriaceous, petioles mostly thickened below the 

 blade/ Young shoots and inflorescence, calyx and outside of petals in most 

 species pubescent, hairs 1-celled, generally stellate or fasciculate. FL bi- 

 sexual, regular, pentamerous, in spikes or racemes, these often unilateral and 

 mostly paniculate. Eeceptacle £eshy, bi^oad, flat or obconical, often concave, 

 bearing on its outer edge the calyx, the segments of which as a rule are much 

 enlarged in fruit. Petals contorted, stamens 5, 10, or more, anthers introrse, 

 adnate to filaments, which are mostly short, the connective being often pro- 

 longed beyond the anthers. Ovary S-celled, often prolonged into a flesh}" 

 stylopodium, in some cases immersed in the hollow receptacle. Two collateral 

 ovules in each cell, attached to the inner angle. Fruit 1-seeded, pericarp 

 coriaceous, indehiscent. Seed with or without albumen, cotyledons fleshy, 

 bifid, often stipitate, in most species filled with starch, in others with oil, 

 while some contain both. 



Bemarkahle anatomical characters. — Mesin dticts are found in the pith of the young 

 stem and branches, in the pith of all vascular Mndles, in the petiole, midrib, nerves 

 and veins of leaves as well as of tiiose Trundles -which run through the bark. The 

 walls of these ducts are lined by a stratxim of thin-walled secreting cells. In many 

 species similar ducts are also found in the wood. They contain an essential oil, knoiivn 

 as wood-oil in the case of DijpterocarpuSj as camphor-oil in the case of Dryohalanops, 

 Exposed to the air, outside or in cavities of the trunk, these essential oils are 

 transformed into resin or camphor. 



Cortical leaf traces.— Some distance below the node the leaf traces separate from 



