346 ^ FLORA OF MANILA 



Style slender, 13 cm long, purplish. Fruit obovoid, sharply 4-, rarely 5- 

 angled, 8 to 14 cm long, 8 to 12 cm thick, containing a single large seed. 

 (Fl. Filip. pi. SOS.) 



Along the seashore, Pasay beach, also occasionally cultivated, fl. all the 

 year; throughout the Philippines along the seashore. Ceylon to Malaya, 

 Australia and Polynesia. 



2. B. racemosa (L.) Blume. Putat (Tag.). 



A shrub or small tree reaching a height of 10 m, glabrous, the branches 

 with prominent leaf-scars. Leaves at the ends of the branches, subsessile, 

 oblong-obovate, 10 to 30 cm long, acuminate, base narrowed, margins 

 crenate-serrate. Racemes terminal or from axils of fallen leaves, solitary, 

 drooping, 20 to 60 cm in length. Flowers white or pink. Calyx closed 

 in bud, splitting irregularly into 2 or 3, ovate, concave segments. Petals 

 oblong-ovate to lanceolate, 2 to 2.5 cm long, slightly connate at the base. 

 Stamens very numerous, 3 to 4 cm long. Fruit ovoid to oblong-ovoid, 

 5 to 6 cm long, somewhat 4-angled, crowned by the persistent calyx, the 

 pericarp leathery, green or purplish. (F. Filip. pi. HO.) 



On open low lands and thickets, fl. most of the year; throughout the 

 Philippines near the seashore. India and Ceylon, Malaya, and Polynesia. 



3. B. luzonensis (Presl) Rolfe. Putat (Tag.). 



A glabrous tree 8 to 12 m high. Leaves somewhat crowded at the 

 ends of the branches, oblong-obovate, 6 to 14 cm long, acuminate, base 

 narrowed, margins uniformly and finely toothed. Racemes axillary, pen- 

 dulous, 10 to 45 cm long, slender. Flowers numerous, short-pedicelled, 

 pink to red. Calyx lobes 4, short, obtuse. Petals narrowly oblong, about 

 7 mm long. Fruit oblong-ovoid, somewhat 4-angled, pointed, 3 to 4 cm 

 long, about 1.5 cm thick. 



Along streams, in thickets etc., Masambong, Singalon, Paco, Pasay, etc., 

 fl. June-Sept.; widely distributed in the Philippines. Endemic. 



101. RHIZOPHORACEAE (MaNGEOVE OR BACAUAN FAMILY) 



Trees with entire, simple, coriaceous, glabrous leaves, the stipules inter- 

 petiolar, caducous. Flowers axillary, solitary, fascicled or in depauperate 

 cymes, perfect. Calyx more or less adnate to the ovary, the limb produced 

 above the ovary, 4- to 14-lobed, the lobes valvate, persistent. Petals as 

 many as the calyx-lobes, entire, notched, cleft, or lacerate. Stamens 

 usually twice as many as the petals, in pairs opposite to and embraced by 

 the petals. Ovary 6- to 1-celled, styles connate; ovules usually 2 in each 

 cell, pendulous. Fruit coriaceous, indehiscent, 1-ceIled, 1-seeded, the seed 

 in the typical mangrove genera germinating before *the fruit falls, the 

 large radicle perforating the apex of the pericarp. 



Genera 17, species about 60, in all tropical countries, 7 genera and about 

 11 species in the Philippines. 



Calyx-lobes and petals 4; stamens 8 1. Rhizophora 



Calyx-lobes and petals 8 to 14; stamens 16 to 28 2. Bruguiera 



1. RHIZOPHORA Linnaeus 



Trees of the mangrove swamps with prop-roots, the branches marked 

 by leaf-scars. Leaves leathery, ovate to elliptic, pointed. Flowers 2 or 

 more, on short axillary peduncles. Calyx 4-lobed, the bracteoles at "the 



