346 A FLORA OF MANILA 
Style slender, 13 cm long, purplish. Fruit obovoid, sharply 4-, rarely 5- 
angled, 8 to 14 cm long, 8 to 12 em thick, containing a single large seed. 
(Fl. Filip. pl. 305.) 
Along the seashore, Pasay beach, also occasionally cultivated, fi. 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 ecm long. Fruit ovoid to oblong-ovoid, 
5 to 6 em long, somewhat 4-angled, crowned by the persistent calyx, the 
pericarp leathery, green or purplish. (F. Filip. pl. 240.) 
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 em 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., 
fi. June-Sept.; widely distributed in the Philippines. Endemic. 
101. RHIZOPHORACEAE (MANGROVE 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 5- to 1-celled, styles connate; ovules usually 2 in each 
cell, pendulous. Fruit coriaceous, indehiscent, 1-celled, 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 Woo -2 6-4. so tet “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 
