Ottelia.] cxxxi. hydrocharide^ (wright). 7 



anthers linear, slightly shorter than the filaments. Ovary oblong, 

 divided more or less completely into 6 cells by the intrusion of the 

 placentas ; ovules numerous ; styles 6, linear, bifid. — Benth, Flor. 

 Austral, vi. 257 ; Hook. f. Flor. Brit. Ind. v. QG2. Stratiotea alismoides, 

 Linn. Sp. Plant. 535 ; Smith, Exot. Bot. t. 15. Bamasoniv/m indicum, 

 Willd. Sp. Plant, ii. 276 ; Roxb. Corom. PI. t. 185 ; Bot. Mag. t. 1201. 



xrile ILand. Cordofan, Kotschy ! 



Mozamb. Dlst. W. shore of Lake Nyasa near Raangwa, Kirk ! 



A specimen collected hy Cameron at Blantyre, British Central Africa, probably 

 belongs to an undescribed species allied to this, but is in too young a state for 

 determination. Also found in Tropical Asia and N. Australia. 



2. O. lancifolia. Rich. Flor. Abyss, ii. 280, t. 95. Leaves radical; 

 petiole dilated at the base, subamplexicaul ; lamina elliptical-lanceolate, 

 acute, gradually tapering into the petiole below, entire, membranous. 

 Scape 1 -flowered, shorter or longer than the leaves. Spathe tubular, 

 compressed, with two opposite wings, shortly bifid. Calyx lobes 3, 

 elliptical-lanceolate, obtuse, green. Petals 3, slightly longer than the 

 calyx-lobes, slightly undulate in the upper half. Fruit ovoid-oblong, 

 enclosed in the persistent spathe. 



Nile Xiand. Abyssinia : Shire, Quarfin Dillon. Gazelle River, Schweinfurth, 

 1159! 



ImO-wct Guinea. Angola : Ambaca, Welwitsch, 6466 ! 



XVKozamb' Dist. British Central Africa : Blantyre, Cameron ! 



YnT.Jluitans, Ridl. in Journ. Linn. Soc. xxii. 238. Leaves narrower, 1 ft. long, 

 Ij in. wide, very gradually tapering into the petiole. 



Ziower Guinea. Angola: Pungo Andongo, Welwitsch, 6468! 



3. O. vesiculata, Ridl. in Journ. Linn. Soc. xxii. 237. Acaulescent. 

 Leaves lanceolate, 3-4 in. long, 9 lin. wide ; petiole 3 in. long. Scape 

 3-15 in. long, slightly compressed, slightly winged, a short distance 

 beneath the spathe becoming incrassate and tetragonal with the angles 

 acutely winged. Spathe inflated, broadly ovoid, striped with purple 

 outside, 1 in. long, 7 lin. wide, bidentate at the mouth. Sepals 

 lanceolate, subacute, 4 lin. long. Petals yellow, G lin. long. Stamens 6. 

 Styles 7. Ovary incompletely 9-celled. 



Iiower Guinea. Angola: RwiWa, Welwitsch, 64Q7 I 



4. O. plantaginea, Welw. ex Ridl. in Journ. Linn. Soc. xxii. 238. 

 Stem short, thick, with numerous rootlets at its base. Leaves ovate, 

 crisped, 4 in. long, 2J in. wide; petiole IJ in, long. Scape 10 in. long, 

 flaccid. Spathe saccate, 1 in. long, with very short wings and about 10 

 short, obtuse teeth. Flowers on short pedicels. Sepals lanceolate, obtuse, 

 4 lin. long, green, scarious at the margin. Petals 9 lin. long, yellow. 



Itower Guinea. Angola : Huilla, Welwitsch, 6469 ! 



6. BOOTTIA, Wall; Benth. et Hook. f. Gen. PI. iii. 453. 



Spathes unisexual. Male flowers several in a spathe. Calyx-lobes 3, 

 narrow. Petals 3, obovate-oblong, much larger than the calyx-lobes. 



