Pistia. | CL, AROIDEH (BROWN). 141 
Niger, Barter, 3244 (ex Engler), Lower Niger: Ibu (Abo), Vogel, 12! Cross 
River, Holland, 233! Cameroons: Mungo, Bucholz! Bipinde, Zenker, 1167! 
and without precise locality, Preuss, 1861! Lake Chad, Vogel, 41! 
Nile Land. Upper Sennar: near Fazokl, Kotschy, 461! thiopia, Kotschy, 
196! White Nile, Schweinfurth, 1061! 1100! 1111! Petherick! Speke & Grant ! 
British East Africa: Taita; Ndara Mountain, Hildebrandt, 2356! 
Lower Guinea. Lower Congo, Hens, Demeuse (ex Durand & Schinz); 
Stanley Pool, Luja, (ex Wildeman & Durand). Angola ; Icolo e Bengo; in lakes 
around Prata, Welwitsch, 214! Pungo Andongo; by the sides of the River Cuige, 
near Quibinda, Welwitsch, 215! Ambriz; stagnant places around Quizemba, Wel- 
witsch, 216! Golungo Alto; near Sange, in stagnant places by the banks of the 
River Quiapoze, Welwitsch, 217! and Mossamedes ; in lakes at the mouth of the 
River Giraul, Welwitsch, 218! pools at Pedra Grande, Newton (ex Hoffmann) ; 
mouth of the Kuango River, Descamps (ex Engler). 
Mozamb. Dist. Portuguese East Africa: Zambesi Delta; in the River 
Luabo, Kirk ! east coast of Lake Nyasa, Johnson, 146A! British Central Africa : 
Nyasaland ; Blantyre, Descamps (ex Dewevre). 
South Central. Congo Free State; Kasai River, Luja (ex Wildeman & 
Durand). 
Widely distributed in the warmer regions of both hemispheres. 
2. SAUROMATUM, Schott; Benth. et Hook. f. Gen, 
Pl, iii. 966. 
Spathe very long, its margins connate below, forming a cylindric 
tube, inflated at the base, withering in fruit; limb 3-4 times as long 
as the tube, narrow, tapering, usually more or less convolute towards 
the apex. Spadix free, shorter than the spathe, monecious, sessile, 
bearing the male and female flowers in short cylindric very distant 
spikes and several spreading clavate or filiform neuter organs above 
the female spike, terminated by a very long terete appendix. Perianth 
none. Anthers densely crowded, sessile, compressed, opening by apical 
pores. Ovaries densely crowded, ovoid, 1-celled; stigma small, sub- 
sessile ; ovules 2—4, erect from a basal placenta, orthotropous. Berries 
numerous, in a globose head, obovoid, somewhat flattened at the apex. 
Seed spheroid or flattened on one side, apiculate ; testa thin; albumen 
copious; embryo axile.—Herbs with a depressed-globose rootstock, 
flowering before the leaves appear. Leaf solitary, long-petioled, peda- 
tisect. Peduncle short, not rising much above the surface of the 
ground. Spathe spotted and often bordered with dark brownish- 
purple. 
Species 3 or 4, or perhaps all forms of one species. One in India, one in 
Sumatra, and the following. 
Neuter organs terete or slightly clavate. “ . 1. S. nubicum. 
Neuter organs filiform . : . j ‘ . 2. S. angolense. 
1. S. nubicum, Schott, Syn. Aroid. 25. Leaf solitary, pedatisect ; 
petiole 1-1} ft. long, glabrous ; segments of the blade 7, broadly oblan- 
ceolate, acuminate, narrowed towards the base where they are more or 
less connected; middle segment about 9 in. long, 34-4 in. broad, the 
