Leucas. | CI. LABIATH (BAKER). 475 
Leaves obtuse . . . . . 58. ZL, velutina. 
Leaves with numerous spreading hairs . . 59. L. megasphera, 
Leaves ovate, 
Leaves very small . . . . 60. LZ. Colea. 
Leaves not very small. 
Stem finely hairy, 
Whorls 1~2 . . . . . 61. L. kondowensis. 
Whorls many. 
Annual . . . . . . 62. L, urticifolia. 
Perennial . . . . . 63. L. Whytei, 
Stem densely villous. 
Teeth of lower calyx-lip not enspidate . 64. L. mollis, 
Teeth of lower calyx-lip cuspidate . 65. L, bukobensis, 
Leaves suborbicular . . . 66. L. somaliensis. 
1. L. cephalantha, Baker. A perennial herb, with a very slender 
finely hairy stem 1 ft. long. Leaves firm, sessile, hairy, entire, linear 
With revolute edges, 1-14 in. long. Whorl solitary, terminal, many- 
flowered ; bracts large, linear, rigidly ciliate. Calyx hairy, } in. long; 
throat not oblique ; teeth small, deltoid. Upper corolla-lip 4 in. long, 
densely villous. 
Mozamb. Dist. (German East Africa: Lower Plateau north of Lake Nyasa, 
Thomson ! 
2. L. Stormsii, Guirke in Engl. Jahrb. xxii. 140, Stem simple 
or slightly branched, pubescent. Leaves sessile, lanceolate, 14-2 in. 
long, 4-2 in. broad, acute or acuminate, serrate upwards, membranous, 
pubescent on both surfaces. Whorls many-flowered ; bracts lanceolate, 
pubescent, as long as or shorter than the calyx. Fruit-calyx pubescent, 
3 in, long ; throat not oblique ; teeth 10, lanceolate-subulate. 
Mozamb. Dist. German East Africa: Karema on Lake Tanganyika, Storms, 4. 
3. L. menthzefolia, Baker. A perennial herb, with densely pilose 
Spreading stems. Leaves nearly sessile, ovate, the largest 1 in. long, 
obtuse, crenate, thick, thinly pilose on the upper surface, densely pilose 
and with the main veins raised beneath. Whorls 1-3, distant, many- 
flowered ; bracts large, linear, densely ciliate. Calyx pubescent, 4 in. 
long; throat not oblique; teeth minute. Upper lip of corolla 4 in. 
Ong, densely villous. Stamens included. 
,» Mozamb. Dist. British Central Africa: Urunge ; 
Tanganyika, 5250 ft., Nut? ! 
Fwambo, south of Lake 
4. L. myriantha, Baker in Kew Bulletin, 1898, 163. A peren- 
nial herb. Stems erect, pubescent, simple or forked. Leaves nearly 
Sessile, ovate, 1-1 1 in. long, entire, broadly rounded at the pase, 
teen and thinly pilose on both surfaces, densely dotted with blac 
glands beneath. Whorls very numerous, many-flowered, contiguous, 
orming a long cylindrical panicle; lower primary bracts large, upper 
