114 COL. GRANT—BOTANY ОҒ THE 5РЕКЕ AND GRANT EXPEDITION. 
Hab. Madi, Dec. 1862 (App. Speke’s Journ. 640), Col. Grant/ Found also in West 
Tropical Africa and in North Brazil. 
[This small bushy plant was found in swamps at 3? 15' N. lat. (December).—J. А. G.] 
Plate LXXVIII. А. fig. 1. Flower; fig. 2. Corolla, laid open; fig. 3. Transverse section 
of ovary. 
BoraGINEÆ. 
1. HreLIOTROPIUM EUROPÆUM, L.; DC. Prod. ix. 584; App. Speke’s Journ. 641. 
‚Наб. By the Nile, 16° N. lat., Col. Grant ! | 4 
Widely dispersed in the Mediterranean region. Col. Grant’s specimen I have not seen. 
2. HELIOPHYTUM INDICUM, DC. Prod. ix. 556; App. Speke’s Journ. 641. 
Нађ. 7 20 8. lat. Oct. 1860, Col. Grant! А tropical cosmopolitan weed. 
[Found at 7° 20'S. lat. in October, near the river M’geta, in а flat country.—J. А. G.] 
8, Еснтом Ravwourn, Delile; DC. Prod. x. 23.—£. longifolium, Delile; App. Speke's 
Journ. 641. | | 
I refer this fragment to E. Rawwolfii rather than to E. longifolium, on account of its comparatively short 
corolla and nearly smooth nuts. ; 
Hab. 14^ N. lat., Col. Grant! А species of the Nile valley. | 
[From the banks of the Nile, by a well, at 14° М. lat. Flowers in March. It stings the fingers. 
—J. A. G.] 
4. CYNOGLOSSUM MICRANTHUM, Desf. ; DO. Prod. х. 149, App. Speke's Journ. 641. 
Hab. Karagué, March 1862, Col. Grant! From West Africa eastward through 
India, 
(9 feet high, with rather angular stem, and long, straight, carrot-shaped root. Its fruit clings tenaciously 
to the clothes. А common weed at Karagué in March.—J. А. G.] 
5. COLDENIA PROCUMBENS, L.; DC. Prod. ix. 558; App. Speke's Journ. 641. 
Hab. Madi, Jan. 1863, Col. Grant! Occurs from West Tropical Africa eastward to 
India and Australia. 
[Found growing flat upon mud which had been baked by the sun, at 3? 15' N. lat., in J anuary, when 
it was not in flower.—J. A. G.] 
CONVOLVULACEÆ. 
1. ARGYREIA POPULIFOLIA, Chois. ; DC. Prod. ix. 329.—Var. africana. Corolla ampla, 
calyce 6—8plo longior. | 
Folia ovato-elliptica, late acutata, basi cordata, subtus tenuiter pilosula, 8 poll. longa, 6 poll. lata ; 
- petiolus 21 poll. longus. Pedunculus 5-6 poll. longus. Cyme 4-6-floræ, piloso-tomentosæ. Sepala 
exteriora longiora, oblonga, obtusa, å poll. longa. Corolla 3 poll. longa et lata. 
Hab. Chopeh, 2 30' N. lat., Nov. 1862, Col. Grant! (Argyreia P, sp., App. Speke’s 
Journ. n. 640.) As a species, this is not distinguishable from the common Indian one. 
(3 feet high ; stem thick, round, erect, or bent, milky and mouldy, covered near the root with many small 
leaflets. Leaves 8 by 6 inches, alternate, underneath white and velvety. After the flower falls, the unequal 
_ Sepals close and lap one over the other, protecting the round four-celled seed-vessel. Flower four times 
the length of the longest sepal, 4 inches across its bell-mouth, and delicate mauve in colour. Five 
stamina, three are equal and half the length of the othertwo. Hairs at the bases of the filaments. Style 
extending beyond the closed sepals. Root round, nearly as large as one”s head. The natives first propa- 
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