Xanthophyllum] XII. POLYGALACE.E 45 



ous, ovary glabrous, fruit smooth, shining. 5. X. GriffltMi, Hook. fil. Jlergui. Ma- 

 lacoa and* Perak. A tree attaining 50 ft., leaves coriaceous, ovary tomentose. Fruit 

 (unripe) tawny tomentose. 



3. SECURIDACA, Linn.; PI. Brit. Ind. i. 207. 

 Species 30, tropics of both hemispheres. 



S. tavoyana, Wall. — Syn. S. inappendiculata, Hassk. ; Kurz, F. Fl. i. 80- 



A large wood} 7 climber, wood anomalous, numerous masses of xylem separated 

 by tangential and radial bands of bast (phloem). Fl. red, iu racemes forming 

 a lax terminal panicle. Sepals deciduous, petals 3, the 2 lateral minute, adnate 

 to the stamina] sheath, the third concave and hooded. Fruit 1-seeded, indehis- 

 cent r a long coriaceous wing at the upper end. 



Assam, Silhet, Chittagong, Burma. Fl. August. China. 



Order XIII. TAMARICACEJE. Gen. PI. i. 159. 



[TamariscinecB. 



Undershrubs, shrubs, rarely trees or perennial herbs. Leaves alternate, 

 small, generally scale-like, sessile with a broad base, imbricating. Fl. 

 regular, usually bisexual, in spikes, racemes or panicles, in some genera 

 solitary. Sepals and petals pentamerous, sometimes tetramerous, generally 

 free. Stamens 5, 10, or numerous, inserted on an annular glandular disk, 

 anthers versatile, dehiscing longitudinally. Ovary synearpous, of 3-5 carpels, 

 ovules numerous, on 3-5 placentas, which sometimes are enlarged, so as to 

 divide the ovary into cells. Capsule 3-5 valved. Albumen small or wanting, 

 embryo straight. 



Stamens 5 or 10, free, styles 'S or 1, short, each with a 



large capitate stigma 1. Tamarix. 



Stamens 10, filaments united into a short tube, ovary 

 tapering into a short style with ;'. sessile stigmas . 'J. Mlvbicabia. 



I. TAMARIX, Linn.; PI. Brit. Ind. i. 248. 



Shrubs or small trees, medullary rays broad, very prominent on radial 

 section. Leaves minute, scale-like. In the juvenile state the leaves are 

 longer. lanceolate from a broad base, up to ', in. long. Fl. white en- pink, in 

 spikes or dense racemes. Sepals and petals free. Stamens 5-10, inserted on 

 an annular disk. Ovary i-celled, placentas at the bottom of the ovary, 

 Styles 3 or 1. short. Seeds small, with a lung coma, consisting of asetiform 

 axis studded with long hairs. Species 66, Kurope. Asia, and Africa'. 



Several s] ies, in India, chiefly T. gallica and /'. dioica, are gregarious, covering 



extensive areas on river hanks. On the Indus the a Is of these species, and. of other 



trees, which are borne down by the river, are deposited on the new formations of 

 alluvial land, which are submerged during t he floods. When t he floods have subsided, 



tla-s Is germinate, and in earl} spring these lands ar rered with a dense forest of 



Tamarix, with a sprinkling of other trees, chiefly of Populus euphratica. 



A. Stamens •">. 



1. T. gallica, Linn.; Wight III. t. 21: Brand. P. PI. t. 5.— Syn. T. 

 indica, Roxb. Vern, Ghazlei, Baluch. ; Qhaz, Pusht. ; i'ih-hi. Ph.; Lei, 



I. ill, Jlnui . Si ii. I ; .limn, lieng. 



