COL. GRANT—BOTANY ОЕ THE SPEKE AND GRANT EXPEDITION. 151 
SALICACEÆ. 
1. базах SAFsaF, Forsk.; DC. Prod. xvi. pt. 2, 196. 
Hab. Sherri Pass, by the Nile, 16° N. lat., April 1868 (Salix egyptiaca, App. Speke's 
Journ. 647), Col. Grant. ! 
Apparently a common species in the Nile region. Col. Grant's specimen is in leaf only. 
MONOCOTYLEDONES PETALOIDEÆ. (Ву J. G. BAKER.) 
HYDROCHARIDE®. 
1. OTTELIA LANCIFOLIA, A. Rich. Fl. Abyss. ii. 280, tab. 95. 
А much stouter plant than that figured by A. Richard, with long-stalked leaves, with a blade 2-3 
inches broad, and а, spathe twice as thick. 
Hab. Madi, Dec. 1862, Col. Grant! (Ottelia no. 8, App. Speke’s Journ. 650.) 
[Fibres from the extreme end of the root. Leaves 10 inches in length, with long stalks. They float in 
stagnant water. The flattened sheaths, containing two florets, are, before development, full of water. Three 
sepals, three petals (latter yellow and crimped), six stamina, and six pistils (deeply divided at tips). The 
sheath, without the flowers, protects the seed-vessel. A section has six spiral concentric cells, with 
numerous oblong seeds. Shells adhere to its leaves. The flowers alone are out of the water ; their stalks 
are 14 inches long. In flower, Dec. 16, 1862, at Madi.—J. A. G.] 
2. OTTELIA LANCIFOLIA, A. Rich., var. 
Differs from the last by its white flowers and tubular spathe, five or six times as long as thick, with a 
pair of lanceolate-acuminate teeth at the throat. Besides Abyssinia, the species has now been gathered 
by Barter in Guinea, by Kirk in Zambesi-land, and by Lyall in Madagascar. 
_ Hab. In the Nile, 919 N. lat., Хоу. 10, 1862, Col. Grant! (Ottelia no. 1, App. 
Speke’s Journ. 650.) | 
[Flower white, appearing just above water in the Nile in November, with three petals. Тһе stem has the 
appearance of a Cactus; but its section is of the form of a convex lens. Root-fibres very long; the 
whole plant 18 inches.—J. А. G.] 
3. OTTELIA SCABRA, Baker, п. sp. Fluitans; foliis omnibus submersis, magnis, tener- 
rimis, oblanceolatis, acutis, crebre inæqualiter nervatis, ad basin longe attenuatis; pedun- 
culo crasso elongato, scaberrimo; spatha ampullæformi, rugosa, triplo longiore quam crassa, 
ad collum unilateraliter fissum gamophylla ; sepalis lanceolatis ; petalis flavis, brevioribus. 
Folia O. lancifolie sed multo majora. Pedunculus tripedalis, 4-6 lin. crassus, punctis duris conicis 
ubique rugosus. Spatha subcoriacea tripollicaris, punctis similibus extrorsum scabra. Sepala firmula, 
Ігеуіз, 6-9 lin. longa. | 
Нађ. Edges of the Nile, in 127 N. lat., March 19, 1863, Col. Статі! (Ottelia no. 2, ` 
App. Speke’s Journ. 650.) 
[Grows in the edges of the Nile at 199 N. lat. Leaves 3 feet long and 3} inches wide, with frilled 
edges. Flower-stalk as rough as a coarse file, 3 feet long, thick and flattened towards the base. In 
March the flowers were undeveloped, but showed a yellow colour. They alone were above water. 
ad. MG) | x 
4. VALLISNERIA ÆTHIOPICA, Fenzl?, in Flora, 1844, 817, Agrees with No. 284 of 
Kotschy's plants of Sennaar, so far as regards leaves and habit, but is not in flower. 
It has dense rosettes of ligulate-oblanceolate sessile leaves not more than а couple of 
p 2r 
VOL. XXIX. 
