214 CLII, ALISMACEZ (WRIGHT). [ Wisneria. 
1. W. Schweinfurthii, Hook. /. in Benth. et Hook. f. Gen. Pl. iii. 
1007. Petiole sheathing at the base, 9 in. long, robust ; lamina oblong 
or oblanceolate, obtuse, up to 6 in. by 6 lin.; lateral nerves 1 on either 
side. Scape about as long as the leaves; whorls of bracts at length 
6-9 lin. apart. Perianth-segments 3. Achenes compressed, 3-ribbed, 
14 lin. long, beak 1 lin. long. 
Wile Land. British East Africa: Bongo; Gir, Schweinfurth, 2157! Jur; 
Jur Ghattas, Schweinfurth, 2304! 
8. BUTOMOPSIS, Kunth; Benth. et Hook. f. Gen. PI. iii. 1008. 
- Flowers hermaphrodite. Sepals 3, persistent, erect after flowering, 
imbricate. Petals 3, smaller than the sepals, fugacious. Stamens 9 
(rarely fewer), in two whorls; filaments flattened; anthers 2-celled, 
basifixed, extrorse. Carpels 6 or fewer, verticillate, slightly connate on 
the ventral side near the base; styles short; stigmas lateral; ovules 
numerous. Follicles usually 6, tapering above into the persistent 
style, dehiscing along the ventral suture. Seeds numerous, curved ; 
testa nearly smooth; embryo horseshoe-shaped.— A scapigerous marsh 
herb, with milky juice. Leaves radical, erect, petiolate. Flowers 18 
umbellate cymes; pedicel elongated in fruit ; bracts membranous. 
Species 1, extending into Tropical India and Australia. 
1. B. lanceolata, Kunth, Enum. iii. 165. Rhizome short, bearing 
numerous slender rootlets. Leaves narrowly ovate, acute, tapering 
below into the petiole, membranous, entire, glabrous, with 2-6 secondary 
nerves pinnately arranged and converging towards the apex, up to 4 12. 
by 14 in.; petiole smooth, up to 10 in. long. Scape usually about 
6-flowered, overtopping the leaves ; peduncle terete, glabrous, up to 1 ft. 
long ; bracts broadly ovate, acuminate, up to 9 lin. long; pedicels up to 
4 in. long in fruit, usually straight. Sepals broadly ovate, acute 
or subobtuse, persistent and sheathing the base of the fruit. Petals % as 
long as the sepals, obovate, obtuse, fugacious, white. Stamens 9 or 
fewer; filaments dilated below; anthers shorter than the filaments, 
oblong. Ovaries ovoid. Follicles ovoid-oblong, acute, connate below, 
obscurely keeled on the dorsal side. Seeds scarcely } lin. long; test# 
crustaceous —Schweinf. Beitr. Fl. Aethiop. 206 ; Benth. Fl. Austr. vi. 
187; Micheli in DC. Monogr. Phan. iii. 87 ; Hook. f. Fl. Brit: Ind. vi. 
562. Butomus senegalensis, Perrottet ex A. Br. in Flora, 1843, 499. 
Tenagocharis cordofana, Hochst. in Flora, 1841, 369. 7. alismoides, 
Hochst. in Flora, 1842, Beibl. 134; A. Br. in Flora, 1843, 499. 7". lam 
ceolata, Durand & Schinz, Conspect. Fl. Afr. v. 489. . 
Upper Guinea. Senegal, Roger, 65! Senegambia, Heudelot, 126! Niget 
Territory: Nupe; in swamps, Barter, 1509! 
Wile Land. Kordofan: in stagnant pools near Arashko] mountain, Kotschy» 
193 ! in the White Nile at Omkenen, near Arashkol mountain, Steudner, 687 ! 
Also in Northern India and Queensland. 
