296 A FLORA OF MANILA 



18. HOMONOIA Loureiro 



Dioecious shrubs with alternate, narrow, entire leaves, glandular- 

 lepidote beneath. Flowers small, in axillary, many-flowered spikes, apet- 

 alous. Male flowers: Calyx globose, splitting into 3 valvate segments. 

 Stamens numerous, crowded, in globose heads of branched filaments and 

 anthers. Rudimentary ovary none. Female flowers: Sepals 5 to 8, 

 narrow, unequal, imbricate, deciduous. Ovary 3-celled; styles spreading. 

 Fruit a small capsule of three 2-.valved 1-seeded cocci. (Greek "harmony," 

 reference to the more or fess united stamens.) 



Species 3 or 4, India and Malaya, 2 in the Philippines. 



1. H. riparia Lour. Lumanaya (Tag.); Miagos (Vis.)., 



A shrub 1 to 3 m high. Leaves linear-lanceolate, acuminate, 12 to 

 20 cm long, green and shining on the upper surface, the lower surface 

 pale and brown-lepidote. Spikes axillary, solitary, 5 to 12 cm long, pu- 

 bescent. Capsules about 8 mm in diameter, pubescent. (Fl. Filip. pi. SS8.) 

 In stream-bed San Juan River at San Francisco del Monte, fl. Mar.- 

 Apr.; throughout the Philippines in similar, habitats. India to Malaya. 



19. R I CI N US Linnaeus 



A coarse, erect, branched annual herb, or shrubby and perennial. Leaves 

 large, alternate, orbicular-ovate, peltate, palmately lobed. Flowers ape- 

 talous, monoecious, in axillary, subpaniculate racemes, the lower ones male, 

 in scattered fascicles, the upper ones female, crowded. Male flowers: 

 Calyx thin, splitting into 3 to 5 segments. Stamens very numerous, the 

 filaments variously connate in branching clusters. Female flowers: Calyx 

 spathe-like, caducous. Ovary 3-celled. Styles short or long, spreading, 

 entire or 2-fid. Capsule of three 2-valved 1-seeded cocci. (The ancient 

 Latin name.) 



A monotypie genus. 



1. R. COMMUNIS L. Tangan-tangan (Tag.) ; Castor Oil Plant. 



Coarse, erect, branched, 1 to 4 high, glabrous, the younger parts 

 glaucous, the vegetative parts and inflotescence green or purplish. Leaves 

 thin, 20 to 60 cm in diameter, the lobes oblong, acuminate, serrate; petiole# 

 long, with a gland at the apex. Racemes stout, erect. Male flowers 

 about 1 cm in diameter. Capsule ovoid, 1 to 1.5 cm long, green or pur- 

 plish, covered with soft spine-like processes. 



In open waste places, fl. all the year; common in and about towns 

 throughout the Philippines, and of prehistoric introduction. Probably a 

 native of Africa, now in all tropical and many temperate countries, wild 

 or cultivated. 



20. MAN I HOT Adanson 



Glabrous trees or shrubs, if ten somewhat glaucous, with milky sap, 

 sometimes from fleshy roots. Leaves alternate, usually deeply 3- to 11- 

 lobed. Flowers medium, apetalous,- monoecious, in racemes, cymes, or 

 panicles. Male flowers: Calyx usually colored, campanulate, 6-lobed, the 

 lobes imbricate. Stamens 10, inserted in 2 rows between the lobes or 

 glands of the disk; filaments free. Female flowers: Calyx as in the male. 

 Disk lobed or entire. Ovary 3-celled, cells 1-ovUled. Capsule of three 

 2-valved cocci. (From the Brazilian name of some species.) 



Species 128 in tropical America, mostly in Brazil, 2 introduced in the 

 Philippines. 



