TRIGONOSTEMON LA.WIANUS. (Nat. order Euphorbiacese.) 



J-RIGONOSTEMON. Blvme. — GEN. CHAR. : Monaecious, calyx of both 6exes imbricate, in the female sometimes increasing in size with 

 the fruit, petals alternate with the calyx -segments generally present in both sexes or rarely wanting in the female ; disk present or rarely wanting. Male, 

 stamens various in number in 1-3 verticels on a central receptacle which is not raised, anthers 2 celled dehiscing longitudinally extrorse or introrse, rudi- 

 ment of ovary none. Female, ovary 3-celled, cells 1 ovuled, styles 3 connate at the base various in length, bifid or rarely twice bifid. Fruit capsular with 

 3 cocci, seed exarillate. Trees or shrubs, leaves alternate bistipulate penninerved lanceolate serrulate or entire, inflorescence axillary. Bl. B'jd, 600 ; — 

 DC. Prod. xv. 1105. Silvcea, Hook, el Am. Dimorphocalyx, 'Thw. Tiitaxis, Baill. Telogyne, Baill. Athroisma, Griff. Cluytise, Sp., Eoxb. Agyneise, 

 Sp., Wall, Crotonis, Sp., Wall and Niwmo. 



Section I, Dimorphocalyx, Thw. — Male calyx shortly 5 toothei, female 5-parted increasing in fruit, petals and disk present in male 

 and female; stamens about 10 14 in 2-3 verticels t anthers introrse. filaments more or less connate., 



J-RIGONOSTEMON LiAWIANUS. (Nimmo.) A small or middling sized much branched glabrous tree, (sometimes only 

 a shrub,) leaves submembranaceoos, lanceolate or ovate, sparingly glanduloso-punctate at the margins, or inconspicuously crenated or 

 quite entire, 1-6 inches long by 1^-2-J broad, petioles 4-12 lines long, stipules triangular from a broad base rather persistent, cymes few 

 flowered terminal and axillary sessile or shortly pedunculate or rarely slender and lax, pedicels 1-6 Hues long, flowers generally all of 

 one sex, bracts small. Male, calyx cupuliform shortly 5-toothed or undulated, petals 5 erect reflexed at the apex white in color, disk 

 dilated into 5 glands alternate with the petals, stamens 10-14 in 2 or 3 series, filaments more or less connate free upwards. Female, 

 calyx large submembranaceous deeply 5-parted increasing with the fruit, petals as in the male, disk annular and less developed, ovary 

 hairy, styles 3, stigmas bifid reflexed, capsule about 5 lines in diameter. — Croton Lawianus, Nimmo in App. tc Graham's Bot. of Bom- 

 bay. Dimorphocalyx glabellus, Thw. and. Bedd. Linn. Trans, vol. xxv. tab. 26. 



A very common tree in our dense moist icestern forests from Canara down to S. Travancore, up to 3500 feel elevation on the Bombay 

 ghats and in Ceylon. I k.imo nothing of its timber ; it is generally a middling sized tree, but sometimes flowering only as a shrub ; in Ceylon it is 

 called Welle wenne. 



A nalysis. 



1. A branch with female flowers- 



2. A female flower. 



3. A petal. 



4. Ovary, styles and annular disk. 



5. Ovary cut vertically, ovules attached to centre of axis. 



6. Ovary cut transversely 3 cells, each 1 ovuled. 

 7, 8. Young fiuit, calyx increasing in size. 



9. A branch with male flowers. 



10. A male flower. 



11. Petals. 



12. A male flower petals removed, showing calyx, 5-lobed disk and stamens sub 3-vertic.lltd, the filaments connate below 



free above. 



13. A stamen, anthers iutrorse. 



14, 15. An abnormal male flower and its stamens. 



273 



