NYMPHAEACEAE 201 



2. ANDREDERA Jussieu 



A scandent, glabrous, annual vine from fleshy tuberous roots. Leaves 

 somewhat fleshy, entire. Racemes axillary. Flcwers small, perfect, the 

 bracteoles small. Sepals 2, boat-shaped, enclosing the corolla, broadly 

 keeled down the back. Corolla deeply 5-parted, thin. Stamens 5, the 

 filaments reflexed in bud. Ovary small, rounded; styles 3, somewhat con- 

 nate at the base. Utricle ovoid or globose, included in the perianth. 



A monotypic genus of tropical America, introduced in the Philippines. 



1. A. SCANDENS (L.) Moq. 



A glabrous, somewhat succulent* herbaceous, annual vine from large, 

 fleshy, tuberous roots. Stems green or purplish, slender. Leaves shining, 

 somewhat fleshy, ovate to oblong-ovate, obtuse to shortly acuminate, 5 to 

 10 cm long. Racemes axillary, solitary, erect, usually simple, 12 to 20 

 cm long. Flowers numerous, pale-greenish, 3 mm long, the sepals broadly 

 Winged down the back. 



Common in thickets along roadsides, etc., fl. Aug.-Nov. A native of tro- 

 pical America, now thoroughly naturalized in and about Manila, but not 

 reported from any other part of the Orient. 



49. NYMPHAEACEAE (Waterlily or Lauas Family) 



Aquatic perennial herbs, often from stout rootstocks, the leaves usually 

 floating, often peltate. Flowers solitary, often showy, on elongated scapes, 

 floating on the surface of the water or raised above the surface. Sepals 

 3 to 5, free. Petals 3 to many, free, hypogynous or adnate to the fleshy 

 disk. Stamens many. Carpels 3 or more, free or connate, or irregularly 

 sunk in pits in the fleshy disk; ovules few or many. Fruit of free and 

 indehiscent carpels, or the carpels more or less united, or sometimes of the 

 enlarged fleshy disk bearing the nut-like carpels sunk in its crown. Seeds 

 naked or arillate. 



Genera 8, species about 50, in all temperate and tropical regions, 2 

 generq and 3 or 4 species in the Philippines. 



1. CASTALIA Salisbury 



Herbs of fresh water, the rootstocks large, creeping. Flowers on elon- 

 gated scapes, usually floating, rarely borne above the surface of the water. 

 Sepals 4. Petals white or colored, in several to many series, the inner 

 ones gradually smaller and transformed into stamens. Filaments petal- 

 like; anthers linear. Carpels many, in one series, sunk in the fleshy disk, 

 crotfrned by the radiating stigmas ; ovules many.: Fruit a spongy berry 

 ripening under water. (A fountain of Greek mythology.) 



Species about 25 in all warm countries, 2 in the Philippines. 



1. C. STELLATA (WiUd.) Blume (Nymphaea stellata Willd.). Waterlily. 



Leaves ovate to suborbicular, entire, rounded, slightly peltate, base 

 deeply cordate, 15 to 25 cm long, often purplish beneath, glabrous. Flowers 

 fragrant, white, about 8 cm in diameter. Sepals green, with few purple 

 dashfes, acuminate. Petals linear-oblong to lanceolate. 



In stagnant pools of fresh water, Malate, rare, fl. Sept.-Nov.; in the 

 Philippines known only from Manila, certainly introduced. Tropical Asia 

 and Africa. 



