Callitriche.'] RHIZOPHORACEAE. 455 



W. Ghats, Nilgiri and Pulney Hills, in wet places and ponds 

 about 7,000-8,000 ft. 



A small flaccid herb, rooting at the nodes, the carpels 

 narrowly winged at the margins. 



Family LXI. RHIZOPHORACEAE. 



Trees or shrubs. Leaves opposite, entire or rarely toothed ; 

 stipules interpetiolar, caducous. Flowers regular, usually herma- 

 phrodite, axillary, solitary or in cymes racemes or panicles ; 

 bracteoles usually in pairs at the base of the calyx. Calyx-tube 

 more or less adnate to the ovary, rarely free ; lobes 4-14, valvate, 

 persistent. Petals as many as the calyx-lobes and shorter than 

 them, entire emarginate bifid or lacerate. Stamens usually twice 

 as many as the petals, often in pairs opposite to them ; anthers 

 2-celled, rarely multi-locellate. Ovary 2-5-celled or 1 -celled by 

 suppression of the septa ; ovules usually 2 in each cell, pendulous ; 

 style simple; stigma simple or lobed. Fruit usually leathery, 

 indehiscent, 1-celled, 1-seeded. Seed 1, pendulous, arillate or not, 

 albumen fleshy or ; embryo in albuminous seeds minute, in 

 exalbuminous seeds elongate, often germinating while the fruit is 

 on the tree. 



Embryo exalbuminous, radicle large, protruded while the fruit is on 

 the tree : 



Bracteoles present at the base of the calyx : 



Calyx-lobes and petals 4, entire ; stamens usually 8 ; ovary 2- 



celled 1. Rhizophora. 



Calyx-lobes and petals 5-6, the petals more or less laciniate : 



Stamens 10-12 ; ovary 3-celled 2. Ceriops. 



Stamens indefinite ; ovary 1-celled 3. Kandelia. 



Bracteoles absent ; calyx-lobes and petals 8-14; ovary 2-4-celled 



4. Bruguiera. 



Embryo albuminous ; radicle minute, not protruded : 

 Calyx-tube with bracteoles, stamens many : 



Ovary semi-inferior, 3-5-celled, 2-ovuled in each cell; leaves 



coriaceous 5. Car allia. 



Ovary superior, 3-celled, 2-ovuled in each cell; leaves membranous 



6. Weihea. 



Calyx-tube without bracteoles, adnate to the base of the 3-celled 

 ovary; leaves membranous, crenate ; stamens 8... 7. Blepharistemma. 



HH 



