119 
A small perennial herb 3-10 in. high, branching at the base. 
Stems erect, slender, loosely branching at the top into a corymbose 
inflorescence, glabrous or with a minute retrorse _pubescence on the 
apical part. Leaves alternate, erect, scattered all along the stems 
and here and there collected in small dense rosettes, 1—4 lin, long, 
3-3 lin. broad, linear or subulate, acute, with thickened, minutely 
denticulate margins, glabrous or pubescent. Pedicels 14-5 lin. long, 
glabrous or retrorsely puberulous. Calyx 5-lobed ; lobes 1-1} lin. 
long, subulate, ascending, glabrous, minutely denticulate ; ovary 
about 3 lin. long, hemispherical, retrorsely puberulous. Corolla 
campanulate, blue, glabrous ; tube 2-2} lin. long; lobes 1-1} lin. 
long, deltoid, acute. Capsule about 1} lin. long, half-superior, 
3-valved. 
Okavango Valley, about 3,000 ft., a sand plant, Lugard, 258. 
Allied to W. Ecklonii, Buek, but less leafy and with much shorter 
calyx-lobes. 
PLUMBAGINEAE. 
Plumbago zeylanica, Linn. 
Banks of the Botletle River at Matabele Drift, Lugard, 5; 
Okavango Valley, about 3,000 ft., Lugard, 259. 
Flowers white. 
EBENACEAE. 
Royena pallens, 7hund. 
Lake River, Lugard, 19; Hackthorn Vley in the northern 
Kalahari Desert, about 3,000 ft., Lugard, 298. 
A shrub, 8-10 ft. high ; flowers primrose-yellow, sweetly scented. 
OLEACEAE. 
Jasminum mauritianum, Boj. 
Okavango Valley, about 3,000 ft., Lugard, 230. 
A creeper-bush ; flowers white, very sweetly scented. 
APOCYNACEAE. 
rum. : 
A dwarf species 6-8 in. high. Branches with a minute + sg meta 
linear- 
densely white-pubescent from peduncle to calyx. Peduncles 1-3 
lin. ae Boauts 3-4 lin. long, subulate or lanceolate-subulate, 
