Orthosiphon. | Cll. LABIATZ (BAKER). 371 
short, not exserted ; upper filaments hairy throughout, not appendicu- 
late. 
Lower Guinea. Angola: province of Huilla, Welwitsch, 5472 ! 
21. O. usambarensis, Giirke in Engl. Pa. Ost-Afr. C. 349. A 
branched herb, with stems pubescent upwards. Leaves shortly petioled, 
ovate, 1-14 in. long, acute, narrowed to the base, deeply inciso-crenate, 
membranous, pubescent on both surfaces. Whorls 6-flowered, forming a 
lax cylindrical raceme, 3-6 in. long; bracts minute, broadly ovate ; 
pedicels pubescent, } in. long. Calyx finally } in. long; upper tooth 
ovate, with decurrent edges, as long as the tube; lateral teeth deltoid- 
cuspidate ; lower subulate. Corolla-tube twice as long as the calyx ; lips 
small. Stamens included. 
Mozamb. Dist. German East Africa: Usambara; Masheua, Holst, 35614 ! 
22. O. dissitifolius, Baker. Perennial. Stems slender, erect, 
simple or branched, under a foot long, slightly hairy. Leaves in few 
distant pairs, shortly petioled, obovate-cuneate, obtuse, obscurely crenate, 
1-1} ln. long, moderately firm, obscurely pubescent on both sides. 
Flowers in few whorls forming a lax terminal raceme, 6-8 in a whorl ; 
pedicels hairy, $—} in. long; bracts lanceolate, minute. Calyx purplish, 
d in. long, slightly hairy; tube campanulate; upper lip ovate, as long 
as the tube; lower teeth large, lanceolate, longer than the upper lip. 
Corolla-tube cylindrical, much longer than the calyx; lips small. 
Stamens not exserted. 
Mozamb. Dist. Britisl: Central Africa: Urungu; Fwambo, 5000-6000 ft., 
Carson, 69! 
23. O. malosanus, Baker. A much-branched erect perennial, 
With stems woody in the lower part and slender densely pilose branches. 
Leaves shortly petioled, obovate-cuneate, very small, obtuse, crenate in 
the upper half, green and thinly pilose on both surfaces. Whorls 4—6- 
flowered, forming a short lax raceme ; bracts minute ; pedicels pubescent, 
$ in. long. Fruit-calyx pilose, above } in. long; tube campanulate ; 
upper tooth ovate; lateral teeth lanceolate; lower linear, longer than 
the tube. Corolla as long as the calyx; lips small. Stamens not 
exserted. 
Mozamb. Dist. British Central Africa: Nyasaland; Mount Malosa, 4000- 
6000 ft., Whyte ! 
24. O. Wakefieldii, Baker. Perennial. Stems slender, decum- 
bent, much-branched, pubescent, 1-2 ft. long. Leaves small, petioled, 
orbicular, crenate, densely hairy on both sides. Racemes ne ; a 8 
Ginute, deciduous ; whorls few-flowered ; pedicels is jong as long “ ; x 
alyx 4 in. long ; tube campanulate ; upper tooth orbicular, as tong as. 
tube ; lateral teeth small ; lower large cusps. Corolla-tube subcylindrical, 
