12 Materials for a Flora of the Malayan Feninsula, 



sub-irregnlar. Galyx-tuhe wholly adnate to tlie ovary (half-adnate in 

 Tra^ia) i\\mh with 2-5 valvate lobes. PefaZ* epigynous, alternate with 

 the calyx-lobes, rarely 0. Stamens as many or twice as many as the 

 petals, inserted with tliem. Ovary inferior (half -inferior in Trapa)^ 

 1-6-celled, most often 4-celled ; style 1, cylindric or snbnlate, stigma 

 capitate or nearly 2-lobed or 4-fid ; ovules one or many in each cell, 

 pendulous or half -ascending, placentas' axil e. Fruit various, dehiscent 

 or indehiscent, membranous capsular or bony, 1- or several-celled, 1 or 

 00 -seeded. Seeds without albumen, or nearly so. Distrib. Species 300, 

 spread throughout the world, most abundant in the North Temperate 

 Zone. 



Stamens twice as numerons as the calyx-lobes... ... 1. Jussijja. 



Stamens equal in number to the calyx-lobes ... ... 2. Ludwigia, 



1. Jussi^A, Linn. 



Herbaceous or snffrnticose, sub-aquatic. Leaves simple, alternate, 

 usually entire. Flowers white or yellow, solitary, axillary ; pedicel 

 usually bibracteate at the apex. Calyx-tahe narrow, only slightly 

 produced above the ovary ; its teeth 4-6, acute, pei-sistent. Petals 4-G, 

 epigynous. Stamens also epigynous, twice as numerous as the petals. 

 Ovary inferior, 4-5-celled ; style simple, usually very short, the stigma 

 4-or 5-lobed ; ovules numerous, axile, in several vertical" rows at the 

 inner angle of each cell. Capsule narrow, cylindric or angled, 4- or 5- 

 celled, 8-10-ribbed, dehiscing septicidally. Seeds very numerous, with- 

 out coma. DiSTEiB. Species 30, tropical, chiefly American. 



JussiJiA SUFFRUTICOSA, Linn. Sp. PI. 555. Erect, branching, 1-4 feet 

 hio'h. Leaves lanceolate, ovate-lanceolate or almost linear, acute or 

 acuminate, narrowed to the base, villous, pubescent or sub-glabrous, 

 2-3 in. long, and *25-'75 in. broad, sessile or very shortly petioled. 

 Flowers •5-'75 in. in diara., on very short j^edicels, the bracts small or 

 foliaceous. Petals wholly yellow. Capsule linear, cylindric, 1-2 in. 

 long, membranous, not woody, 8-ribbed, deciduously villous or pubes- 

 cent. Seeds sub-hemispheric ; the testa with a prominent raphe, shining, 

 brown, not corky. DC. Prodr. Ill, 58 ; Wall. Cat. 6334 ; Miq. Flor. Ind. 

 Bat. I, Pt. I, 628 ; Kurz in Journ. As. Soc. 1877, Pt. II, 90 ; Clarke in Flor. 

 Br. Ind. II, 587. J. exaltafa, Roxb. Hort. Beng. 33 ; Flor. Ind. II, 401. 

 J, villosa, Lamk. Diet. Ill, 331 ; DC. Prodr. Ill, 67 ; Wall. Cat. 6333 ; 

 W. & A. Prodr. 336 ; Gibs. & Dalz. Bomb. Flor. 98. /. fruticosa, DC. 

 1. c. /. scabra, Willd. ; DC. 1. c. /. Burmanni, and octophila, DC. 1. c. 

 J", longipes, Griff. Notul. lY, 689. J. decumbens, Wall. Cat. 6322. 

 /. angustifolia, Lamk. Diet. Ill, 331 and 111. t. 280, fig. 3 ; DC. Prodr. Ill, 

 55; Miq. Flor. Ind. Bat. I, Pt. I, 627. Epilohium fruticostim, Lour. Flor. 

 Cochin-china 226. Rheede Hort. Mai. II, t. 50. 

 356 



