i gh ATE Le Ep RE a CE ae et ee 
218 _ CLIII, NAIADACEZ (BENNETT). [ Aponogeton. 
_ 5, A. Rehmanni, Oliver in Hook. Ic. Pl. t. 1471, fig. B. Leaves 
oblong-subacute, 1-13 in. long, 3-5 lin. broad, subapiculate. Spike 
bifid, 2 in. long, about 3 lin. in diam., dense-flowered, whitish ; flowers 
dicecious; bracts ovate-oblong, subacute. Follicles 8-9, oblong.— 
Durand & Schinz, Conspect. Fl. Afr. v. 498; A. Bennett in Dyer, 
Fl, Cap. vii. 44. 
Lower Guinea. (German South-west Africa: Amboland, ex Durand & 
Schinz. 
Also in South Africa, 
6. A. abyssinicus, Hochst. in Schimp. Pl. Abyss. Husice. 1483. 
Stem-base tuberous, globose. Leaves lanceolate, long-petioled ; floating 
leaves lanceolate-ovate. Spike bifid, dense-flowered ; branches 1-1} in. 
Jong; peduncle nearly equal in diameter throughout; flowers rose or 
purplish. Sepals 13—2 lin. long, oval-oblong. Stamens 6.  Follicles 
3, with a beak 2 the length of the ovary.—A. Rich. Tent. Fl. Abyss. 
ii. 351; Durand & Schinz, Conspect. Fl. Afr. v. 491; Engl. Jahrb. vil. 
270. Ouvirandra Hildebrandtii, Hort. Berol. ex Kuntze in Verhandl. 
Bot. Ver. Brandenb. xix. ix.; Eichler in Sitz. Ges. Naturf. Fr. Berlin, 
1879, 6-12, t, 1. | 
"Wile Band. Eritrea: Kohaito Plateau, 8500-8800 ft., Schweinfurth, 187! 
Abyssinia : in marshes near Axum, Schimper, 1483! East Tropical Africa, London! 
7, A. Stublmannii, Lngl. in. Notizbl. Kinigl. Bot. Gart. Berlin, 
i. 26. Submerged. Leaves linear, 7-veined, obtuse; petioles longer 
than the blade. Spike simple, lax-flowered. Sepals 2, obtuse, 1-nerved. 
Stamens 6, equal in length to the sepals. Carpels 3; ovaries ovoid ;, 
style subulate. Follicles 4-seeded.—Pfl. Ost-Afr. C. 94. 
Mozamb. Dist. German East Africa: Usinja; Bugando, Stuhlmann, 3541. 
8. A. Boehmii, Engl. in Notizbl. Kinigl. Bot. Gart. Berlin, i. 26. 
Rootstock tuberous. Leaves submerged, linear-lanceolate, obtuse, 
5-nerved ; petiole longer than the blade. Spike bifid, dense-flowered. 
Sepals 3, obovate-spathulate, purple-punctate. Stamens 6. Carpels 
3-ovuled.— Pfl. Ost-Afr. C. 94. 
Mozamb. Dist. German East Africa: Umyamwezi; in the River Wala,. 
Boehm, 98. 
9, A. vallisnerioides, Baker in Trans. Linn. Soc. xxix. 158. 
Densely cespitose. Leaves sessile, ligulate, membranous, obtuse, 3-4 
in. long. Spike simple, dense-flowered, 1 in. long, 3 lin. thick. 
Ovaries 4 (?), those of the upper third infertile (2). 
Upper Guinea. River Niger, Baikie! : 
Mile Land. British East Africa: Jur; near Kurshook. Ali’s Seriba, Schwew- 
Surth, 1704! 1761! Jur Ghattas, Schweinfurth, 4266! Bongo; Gir, Schweinfurth, 
2152! Dumuku, Schweinfurth, 2168! Ukidi (Unyoro), Speke & Grant! 
* This has a spike like A. monostachyum, Roxb,, of India, with leaves in shape 
and texture just like those of a small specimen of Vallisneria,” Baker, 1.c. 
