276 LABIAT (Cooke). [ Plectranthus. 
Eastern Recion: Zululand ; Entumeni, 2000-3000 ft., Wood, 3955! 
This has a general similarity in appearance to P. marrubioides, but the calyx, 
the upper tooth of which is twice as long as the lower ones, is entirely different. 
13. P. densiflorus (T. Cooke in Kew Bulletin, 1909, 378); 
suffruticose; stems stout, pubescent; leaves 2 in. long and 
as broad as long, orbicular, somewhat distinctly and obscurely 
crenate, softly villous on both sides; base cuneate running 
down into a short stout petiole, the junction of which 
with the leaf-blade is obscure; inflorescence paniculate, the 
racemes composing the panicle spike-like, reaching 10 in. long, 
densely villous ; verticils many-flowered, close ; bracts ovate-lanceo- 
late, acute, deciduous, 14 lin. long, 3 lin. broad, pubescent on the 
back and with ciliate margins ; pedicels 1 lin. long ; fruiting calyx 
21 lin. long, campanulate, straight, villous ; upper tooth 14 lin. 
long, } lin. broad, ovate-oblong, subacute, ciliate; 2 lateral teeth 
lin. long, ovate-oblong, acute, ciliate ; 2 lower teeth similar but 
slightly smaller; flowering calyx 1} lin. long, densely villous ; 
upper tooth rather more than } lin. broad ; other 4 teeth subequal 
or the lower smaller, oblong, ciliate ; corolla yellow (Wood) ; tube 
1} lin. long, nearly straight, enlarged above ; nutlets nearly 3 lin. 
long, } lin. broad, almost flat on one face, angular on the other, 
smooth, shining, yellowish-brown. 
Eastern ReGron : Natal ; near the Mooi River, 3000-4000 ft., Wood, 44751! 
14. P. Tysoni (Guerke in Engl. Jahrb. xxvi. 77) ; stem erect, 
16-20 in. high, pubescent ; leaves petiolate, 1} in. long, 1 in. broad, 
ovate, acute, coarsely crenate-serrate, slightly pubescent above, 
more densely so and copiously gland-dotted beneath, base shortly 
cuneate into the petiole ; petioles }—} in. long ; inflorescence a long 
simple raceme reaching 1 ft. or more long ; verticils pedunculate, 
rather distant, developing into many-flowered opposite racemes 
reaching 6 lin, long ; bracts small, deciduous ; pedicels 2 lin. long ; 
fruiting calyx 3 lin. long, pubescent and glandular ; upper tooth 
1} lin. long, }-3 lin. broad, ovate-oblong, subacute ; lateral teeth 
1 lin. long, } lin. broad, oblong, rounded ; 2 lower teeth 2 in. long, 
lanceolate-subulate, united nearly to the top; corolla purple, } in. 
long, sparsely gland-dotted ; tube } in. long, sharply deflexed near 
the base, enlarged and funnel-shaped above ; upper lip 1 lin. long ; 
lower lip } in. long, y5 in. deep, boat-shaped ; nutlets globosely 
ellipsoid, § lin. long and nearly as broad as long, smooth, brown. 
Eastern Recion: Griqualand East; in rough places on the banks of the 
Uwzimkulu River, near Clydesdale, Zyson, 2769! and in MacOwan & Bolus, 
Herb. Austr.-Afr., 1295! Natal; Dumisa, Rudatis, 262! 
15. P. laxiflorus (Benth. in E. Meyer, Comm. 228) ; stem erect, 
villous ; leaves 2-34 lin. long, 4-1} in. broad, broadly ovate, acute 
or acuminate, sparsely hairy on both sides, crenate-serrate, base 
