EHIZOPHORACBAE 347 



base connate. Petals 4, entire. Ovary half-inferior. Fruit ovoid, pendu- 

 lous the calyx lobes persistent, reflexed, the radicle germinating on the 

 tree, long-protruded, perforating the apex of the fruit. (Greek '*root" and 

 "to bear.") 



Species about 5, tropics generally, on muddy seashores, along tidal- 

 streams, etc., characteristic trees of the mangrove swamps, 2 in the 

 Philippines. 



Peduncles much shorter than the petioles, 2-flowered 1. R. conjugata 



Peduncles about as long as the petioles, 3- to T-flowered 2. R. mucronata 



1. R. conjugata L. Bacao, Bacauan (Tag.). 



A tree of the mangrove swamps, up to 12 m high, with prop-roots. 

 Leaves coriaceous, green and shining, oblong-elliptic, 10 to 16 cm long, 

 apex acute or mucronate, base acute. Penducles from the axils of fallen 

 leaves, shorter than the petioles, 2-flowered. Flowers sessile. Fruit ovoid, 

 pendulous, brown or olivaceous, about 4 cm long, the persistent calyx-lobes 

 reflexed, the protruded radicle green, cylindric, 20 to 40 cm long. (Fl. 

 Filip. pi. 1S5, R. mucronata.) 



Along tidal streams, fish-ponds, etc., Malabon, fl. most of the year; 

 throughout, the Philippines along tidal streams, one of the characteristic 

 trees of the mangrove swamps. Tropical shores of Asia, Africa, and 

 Malasia. 



2. R. mucronata Lam. Bacao, Bacauan (Tag.). 



Very similar to the preceding species, and with the same habit. Leaves 

 oblong-ielliptic, coriaceous, shining, up to 16 cm long, apex with a slender 

 mucro. Peduncles axillary, 2.5 to 4 cm long, about as long as the petioles, 

 forked at the apex, bearing from 3 to 7 flowers. Flowers and fruit about 

 as in the preceding species. 



In mangrove Swamps, along tidal streams, etc., fl. most of the year. 

 Kange about the same as for R. conjugata. 



2. BRUGUIERA Lamarck 



Trees or shrubs of the mangrove swamps with prop-roots, glabrous. 

 Leaves entire. Flowers axillary, solitary or cymose, small or large. Calyx 

 split into 8 to 14 narrow lobes, obconical or campanulate. Petals oblong, 

 2-lobed or emarginate, appendiculate. Stamens 16 to 28; anthers linear, 

 mucronate, about as long as the filaments. Ovary 2- to 4-celled. Fruit 

 included in or adnate to the calyx-tube, 1-celled, 1-seeded, germinating 

 on the tree. (In honor of J. G. Bruguieres.) 



Species about 7, along the seashores and tidal streams in the tropics 

 of the Old World, -characteristic of the mangrove swamps, 4 in the Philip- 

 pines. 



Flowers about 3 cm long. > 1- B. eriopetala 



Flowers about 1 cm long 2. B.. cylindrica 



1. B. eriopetala W. & A. Pototan, Busain, Bacauan (Tag.). 



A small or large tree, the young branches usually slender. Leaves 

 coriaceous, shining, oblong-elliptic to oval-oblong, acute at both ends, 8 

 to 16 cm. long. Flowers yellow, axillary, solitary, 3 cm long, the pedicels 

 decurved. Calyx-lobes usually 10. Petals shorter than .the calyx-lobes, 

 cleft at the apex, bearing a stout seta in the .sinus, the edges clothed with 



