210 CLII, ALISMACEZ (WRIGHT). [ Limnophyton. 
Fl. Aethiop. 295; Micheli in DC. Monogr. Phan. iii. 39 ;. Hook. f. Fi. 
Brit. Ind. vi. 560; Engl. Pfl. Ost-Afr. C. 94; Rendle in Cat. Afr. Pl. 
Welw. ii. 93. Sagittaria obtusifolia, Linn. Sp. Pl. ed. i. 993 ; Speke, 
Nile, Append. 650; Baker in Trans. Linn. Soc. xxix. 157, t. 102. 
S. nympheifolia, Hochst. ex Buchen. in Flora, 1865, 246. Alisma 
sagittifolia, Willd. Sp. Pl. ii. 277; Benth. in Hook. Niger Fi. 528; 
Schweinf. Beitr. F]. Aethiop. 206. A. Kotschyi, Hochst. in Flora, 1841, 
Intellig.-bl. 44, and 1843, 499. A. obtusifolium, Thwaites, Enum. Pl. 
Zeyl. 332. Dipseudochorion sagittifolium, Buchen. in Flora, 1866, 
245. 
Upper Guinea. Senegal, Roger, 60! Perrottet, 807! Senegambia, Perrottet ! 
Heudelot, 231! Sierra Leone : in wet places at Likuru and common up to Farana, 
Scott-Elliot, 4972! Niger Territory: Nupe, in swamps, Barter, 1532 ! 
Wile Land. Kordofan: Arashkol Mountain ; at Omkenem, Steudner, 685! 
Kotschy, 169! Birket Rahad, Pfund, 407! 798! British East Africa: banks of 
the Nile, at Abu Kuka, Petherick! and at Gondokoro, Speke & Grant, 767 | 
White Nile, without precise locality, Sabatier / coast, near Lamu Island, Hilde- 
brandt, 1319! 1912! . 
Lower Guinea. Angola: Icolo e Bengo; plentiful at the muddy marshy 
edges of Lagoa de Funda, near Funda, Welwitsch, 3010! 
Mozamb, Dist. Portuguese East Africa : Lower Zambesi ; in a marsh at 
Lupata, Kirk! at N’Kueza (Ankweza), north of Sena, Kirk! British Central 
Africa: Tanganyika to Moero Plateau, Carson, 40! Ngamiland ; Botletle. Valley, 
Lugard, 206! 
3. LOPHOTOCARPUS, Durand, Index Gen. Phan. x. and 627. 
Flowers hermaphrodite and male, monecious. Sepals 3, distinct, 
persistent, sheathing in fruit. Petals 3, deciduous, imbricate. Stamens 
9-15, hypogynous; filaments complanate; anthers 2-celled, extrorse, 
oblong, cells adnate to the connective. Carpels numerous ; ovules 
solitary, basal, erect, anatropous ; style apical, long, oblique, persistent. 
Achenes densely congested on a convex receptacle, much laterally com- 
pressed. Seed basal; testa thin, punctate; embryo horseshoe-shaped ; 
radicle thick.—Marsh herbs. Leaves radical, often floating, sagittate, 
with a network of laticiferous vessels ; petiolelong. Scape unbranched ; 
flowers 2-3 in each verticil, lower hermaphrodite, upper hermaphrodite 
and male; bracts membranous.—Lophiocarpus, Mig. Ill. Fi. Arch. 
Ind. 50, not of Turcz.  Sagittaria, Sect. Lophiocarpus, Benth. et 
Hook. f. Gen. PI. iii. 1006. 
Species 3, one in North America, another in Brazil, and the following in Tropical 
Asia, Africa and America. 
1, L. guyanensis, Durand & Schinz, Conspect. Fl. Afr. V- 487. 
Rhizome short, densely .covered with rootlets.. Leaves widely ovate- 
cordate, floating, obtuse or slightly emarginate, 2 in. long, 1} in- broad, 
occasionally some submerged leaves with reduced blades are present ; 
petiole varying in length with the :depth of the water, transversely 
septate inside. Scape erect or procumbent, bearing few-flowered whorls 
