Jussiaa.] lix. onagrarie^ (oliver). 489 



peduncle of ^- \ in. Seeds oblong, subterete, each enclosed at first 

 in an obovate compressed investment, bony within, of the endocarp. 



Upper Guinea. Nigritania, Barter! 



Nile Land. White Nile, 12° N. lat., Dr. Brownell! Marshes, 3° N. lat., and Nile 

 banks, 10° N. lat. (as /. villosa), Speke and Grant ! 



Mozamb. Distr. Zambesi land, Shire valley, and elsewhere, Dr. Kirk! 

 Differs from /. diffusa in little but the erect or ascending (not rooting) habit. 

 Also in Tropical America. 



3. J. acuminata, Sw. Fl. Ind. Occ. ii. 745. An erect simple or 

 sparingly branched glabrous herb, from a few inches to 1-2 ft. Stem 

 obtusely angled. Leaves membranous, ovate-lanceolate or lanceolate, 

 distinctly petiolate, narrowed to an acute or subacute apex, base cuneate 

 or slightly rounded narrowing into the petiole, entire, with 13-17 

 lateral veins curving forward on each side of the rather prominent 

 midrib; 3-4 in. long, 1-1£ in: broad. Flowers yellow, small, about 

 ^ in. in diameter, tetramerous, shortly pedunculate or subsessile. Ovary 

 and peduncle usually not exceeding J-f in. Capsule narrow, apparently 

 not exceeding f in., in length. Seeds (at least the lower ones) each singly 

 enclosed in ultimately dehiscent segments of endocarp. 



Upper Guinea. Sierra Leone and Nigritania, Barter! Dr. Raikie! Gaboon, 

 Mann! 



Lower Guinea. Congo, Burton! 



Mozamb. Distr. Zambesi, Dr. Peters (Klotzsch in Peters' Mossamb. Bot., 70. ex. 

 descr.) 



Also in Tropical America. 



4. J. villosa, Lam. Diet. iii. 331. An erect branching herb from a 

 few inches to 3 or 4 ft. in height. Stem firm, woody, often slender, 

 terete, with raised decurrent lines or extremities subalate, more or less 

 hirsute above, at least at the leafy extremities, usually glabrescent below, 

 rarely so throughout. Leaves from narrow-linear to linear-lanceolate, 

 acute, gradually narrowed to the base, usually without distinct petiole, 

 J-5 in. long, frequently not exceeding l-12th in. in breadth. Flowers 

 small, subsessile, yellow, 4-merous. Capsule §-l£ (-2) in. ldng. Seeds 

 nearly round, compressed, about J line diameter. 



a. (Leaves linear-lanceolate.) 



Upper Guinea. Sierra Leone, Barter ! Camaroons river, Mann ! 

 Nile Land. Ukidi and Madi, Upper Nile, Speke and Grant. 

 Mozamb. Distr. Zambesi and lower valley of Shire, Drs. Kirk and Metier! Zan- 

 zibar, 74° S. lat. (as /. angustifolia), Speke and Grant! 



/3. (Leaves uarrow-linear.) /. linearis, Willd. Sp. ii. 575. 



Upper Guinea. Senegambia ! Bassa, T. Vogel ! Abbeokuta, Irving ! Confluence 

 of Quorra and Tschadda (form with shorter hirsute linear leaves), Barter ! I have not 

 seen the Abyssinian plant cited by Richard. 



Widely spread in tropical countries. 



6. J. linifolia, Vahl, Eclog. Amer. 32. Erect with a firm but slender 

 woody terete stem, marked with faint decurrent lines or very narrowly 

 alate above, from a few inches to 2 ft. or more (8-10 ft.) in height, 

 usually freely branched above, branches divaricate, wholly glabrous. 

 Leaves linear-lanceolate, narrowed to each end, acute or subacute, 



