828 • LXI. ONAGRACEiE. [JussicBU. 



to I in. long, -25 in. through at top. Seeds ellipsoid polished, 

 mahogany brown. Hab. Wet spots, ditches, etc. Common. 

 Singapore, TangHn, Tanjong Katong, Malacca (Griffith) ; Pulau 

 15esar (Maingay) to Kelantan, Chaning; Kota Bharu. Penang 

 (WalUch). Distrib. India, Java, Borneo, Timor, Philippines, 

 Papua, Australia, China. Native names : Bujong Samalam ; 

 Pujong Malam; Lakom Ayer. Use : As a poultice for headache. 



/. exaltata Roxb. Fl. Ind. ii. 401, is a form with leaves sparsely hairy 

 above. It is common in India, and forms approaching it occur here. 



(4) J. villosa Lam. Encycl. iii. 331. 



A tall densely hairy plant. Leaves lanceolate, narrowed at 

 both ends, sessile hairy all over, 3 in. long, i in. wide. Ovary 

 cyHndric hairy. Sepals ovate acute -3 in. long, -i in. wide at base, 

 hairy outside. Corolla -75 in. across; petals oblong oblanceolate 

 retuse, -25 in. across. Fruit thickly cylindric, base narrowed, 

 hairy, 1-25 in. long, -25 in. through. Seeds dark red elHpsoid, 

 grooved. Hab. Wet spots, Singapore, Alexandra Road. Distrib. 

 S. India, Cambodia, Borneo, Timor, Philippines, Australia. 



(5) J. speciosa Ridl. Journ. Bot. 1921, p. 259. 



A plant 4 to 6 ft. tall, densely softly tomentose-hairy all over. 

 Leaves lanceolate broad, narrowed to both ends 4 in. long, i in. 

 wide ; nerves over 20 pairs ; petioles short, distinct, -25 in. long. 

 Sepals triangular acuminate, cuspidate, densely hairy outside 

 •5 in. long, -25 in. wide at base. Corolla 3 in. across ; petals -25 in. 

 across, obovate. Capsule obconic, densely softly hairy and 

 crowned by the large sepals now -9 in. long. Seeds ellipsoid not 

 grooved, red. Hab. Ditches and swamps, local and not common. 

 Singapore, Balestier Plain, Serangoon Road.* Distrib. South India, 

 Ceylon. 



2. LUDWIGIA, Linn. 



Erect or decumbent herbs. Leaves alternate. Flowers 

 axillary, sessile or nearly so. Calyx-tube slender, cylindric, lobes 3 

 to 5, persistent acute. Petals 3 to 5, epigynous, yellow, very 

 small. Stamens as many. Ovary inferior 4- or 5-celled; ovules 

 many in two or more rows ; style simple. Stigma capitate. 

 Capsule linear or oblong 4- to 5-celled breaking up irregularly. 

 Seeds numerous, obovoid smooth not corky. Species 20. Tem- 

 perate or tropical regions. Differs from Jussicea simply in the 

 smaller number of the stamens. 



Capsule oblong, thick ; seeds in several rows . . (i) L. parviflora 



Capsule very slender, cylindric; seeds in i row . . (2) L. prostrata 



(i) L. parviflora Roxb. Hort. Beng. 11 ; Clarke, I.e. ii. 588 ; 

 King, I.e. 13. 



Erect glabrous herb 6 to 12 in. tall. Leaves lanceolate to 

 linear-oblong narrowed to both ends i to 3 in. long, -25 to -5 in. 



