490 LIX. ONAGRARIEH (OLIVER). [ Jussi@a. 
entire, 1-3 in. long; petiole variable, frequently narrowly margined to 
the base. Flowers small, yellow, sessile, 4-merous, often from neurly 
every axil. Capsule ralniical or slightly narrowed below, 4-2 in. 
long. Seeds minute, oblong or ellipsoidal, about + line in length.— 
J.aitissina, Guill. et Perr. Fl. Seneg. 293 (ex. deser.). J. nubica, Hochst. 
in Herb. Kotsch. Nub. 
Upper Guinea. Quorra, T. Vogel! Senegambia, Guill. et Perr., le. 
Nile Land. Between Khartoum and Sehendy, Dr. Bromfield! Nubia, Sennaar, 
Kotschy! 
Lower Guinea. Congo, Consul Burton! 
Mozamb. Distr. Sungomero, Zanzibar, Speke and Grant ! 
Also in Tropical America, 
3. LUDWIGIA, Linn. ; Benth. et Hook. f. Gen. Plant. i. 788. 
Characters of Jussiva, but flowers isostemonous, the stamens ges 
number as calyx-teeth.—Herbs, the African species with habit 0 
Jussied. ie 
A considerable genus, chiefly North American, with a few widely-diffused species 
the Old World tropics. : Me 
Flowers 4—1 in. diameter. Capsule 1 in. long, #4; in. diameter . . 1. LD, jussveovaes. 
Flowers 4-4 in. diameter. Capsule 4-4 in. long, 2,— in. diameter, 
narrowed into peduncle of ;/, in. era pe 
Flowers §—} in. diameter. Capsule slender, subsessile, $—3 in. long, 
gy in. diameter . : 
2. L. parviflora. 
oo 3. L. prostrate. 
1. L. jussizoides, Lam.; DC. Prod. iii. 58. Erect, varying 
height to probably 2-3 ft., freely branched above. Stem subterete, 
with faintly raised decurrent lines, puberulous at the extremutes. 
Leaves linear-oval or -lanceolate acute or subacute, narrowed below 
into the petiole, glabrous or scabrid on the nerves; blade and peo 
able petiole together 14-4 in. long. Flowers axillary, 1 in. oF aa 
in diameter, Calyx-teeth }-}in.; petals rotundate, exceeding a 
calyx-teeth. Capsule subcylindrical, 1 in. long, 7; in. diameter ° 
peduncle of 3 in., more or less —DC. Mém. Onagr. t. 3. ; 
Mozamb. Distr. Zanzibar, Dr. Kirk! 
Also in the Mascarene Islands, 
2. L. parviflora, Roxb. ; DC. Prod. iii. 59. Erect, freely bean 
ing or subsimple, from a few inches to 2—3 ft. in height, wholly g 
brous or with a few microscopic setulae on the leaf-nerves. Stem su)" 
terete below, with decurrent lines. Leaves from narrow-linear y 
linear-lanceolate, gradually narrowed into the petiole, 1-3 (4) ™- lone: 
Flowers axillary, } in. or less in diameter. Calyx-teeth 4—§ in- Ce 
sule narrowed below, }} in. long, 1-1 in. diameter above, usua y 
with a distinct peduncle of ;4, in, Seeds 1—50th to 1-60th m. -~ 
—Tsnardia multifiora, Guill. et Perr. F). Seneg. i. 295 (ex. descr.). LZ 
wigia, Walp. Rep. ii. 75. 
Upper Guinea. Senegambia, Guill. et Perr. (with flowers occasionally 5-mereus 
and stamens sometimes twice as many as usual) 
Nile Land. Unyoro, Speke and Grant ! 
Also in Tropical Asia and Australia. 
