274 



08. VEllBENACE^. 



[Tedona, 



Wood yellowish-brown, liard, oily, very durable and strong ; does not 

 warp or split once properly seasoned ; contains an aromatic oil ; works 

 easily and takes a good polish. Annual rings distinctly marked by a layer 

 of large pores on the margin, a few moderate sized pores scattered in the 

 ring. Medullary rays moderately broad, equi-distant. Weighs 48 lbs. 

 to the cub. ft. The chief timber of India and Burma. Used for most 

 purposes. Wood from dead trees is stronger than from trees girdled to 

 death. Malabar leak is more oily than the Burmese wood and is pre- 

 ferred for ship-building, construction of gun carriages and other uses. 



9. AVICENNIA, Linn. 



A gregarious shrub or small tree. Leaves coriaceous, entire. 

 Flowers sessile, yellow, in peduricled heads. Bracts and bracteoles 

 small. Sepals 5, unaltered in fruit. Corolla-tube short, cylindrio; limb 

 4f-divided, divisions equal. Stamens 4, on the throat of the corolla. 

 Ovary imperfectly 4-ceiled by a 4-winged central column, ovules 

 peLdulous between the wings j style long or short, bifid at tip. 

 Capsule compressed, ovate, mucronate^ 1-seeded ; cotykdons thick, 

 fleshy, folded ; radicle villous, inferior. 



A. officinalis, Linn. Schauer in DC. Prod. XL 700 ; Fl. Br. L 4 604; 

 Bedd. n. Sylv. 174 ; Brandis For. Fl. 371. White Mangrove. Tivar, M. ; 

 Ipati, K, 



Mangrove swamps of ' the Deccan peninsula and Ceylon, common in 

 salt marshes and along the banks of tidal rivers and creeks, throughout 

 the Konkan and North Kanara. Fl. Mch.-Apl.-May. Fr. ripe July- 

 Aug. 



Wood grey, heartwood darker, haid, heavy, brittle, composed of 

 well-marked concentric layers which consist of a ring of white tissue 

 sometimes anastomosing with the ring of the next layer. The ring is 

 lined with a row of Uioderate sized pores, often containing a black 

 substance. Fine pores surrounded wdth white tissue are equally distri- 

 buted throughout the layer. Medullary rays fine, white uniform. Weighs 

 66 lbs. to the cub. ft. Used in India only for firewood. Bark contains, 

 tannin. 



Ordee 69. LABIAT.^:. 



Herbs, rarely shrubs, usually with many oil-glands. Stem qua- 

 drangular. Leaves opposite or whorled, stipules 0. Flowers irregular. 

 Calyx 4-5-cleft or 2-lipped. Corolla monopetalous, limb 4-5-lobed or 

 2-lipped, lobes imbricate in bud. Stamens on the corolla-tube 4, 

 didynamous, or the 2 upper imperfect. Disk prominent. Ovary 

 4-lobed and celled ; style simple, inserted between the lobes, stigma 

 usually 2-divided, ovules solitary erect, 1 in each cell. Fruit of 4, 

 small, 1-seeded nuts, enclosed in the calyx. Seeds small erect; 

 albumen scanty or 0, radicle inferior. 



