Orthosiphon. | LABIATA (Brown). 249 
Briquet has separated this plant into two species, chiefly distinguishable by the 
size of the flowers ; but in different gatherings and often in different specimens of 
the same gathering (both Tropical and South African) I find the flowers vary much 
in size and exsertion of the corolla. The leaves and bracts are also very variable. 
12. 0. Elliottii (Baker in Dyer, Fl. Trop. Afr. v. 376); a 
branching shrub or shrublet ; young branches obtusely 4-angled, 
tomentose with a felt of minute branched hairs, becoming woody 
with a glabrous brown bark; leaves $-1} in. long, }-} in. 
broad, lanceolate, ovate or elliptic, acute or obtuse, cuneately 
narrowed into a petiole }—1 lin. long, densely white- or greyish- 
tomentose on both sides with minute branched hairs, reticulated 
with rather thick prominent veins beneath ; racemes simple, 1}—3 
in. long, with 4-8 2-flowered whorls }~} in. apart ; bracts }—4 in. 
long, 1-1 in. broad, ovate or obovate, obtuse or broadly rounded at 
the apex, thin, glabrous, minutely ciliate, bright rosy-purple, all at 
first imbricating, forming a subglobose or oblong bud-like termina- 
tion to the raceme, deciduous as the raceme develops, with some of 
the terminal pairs persistent and without flowers in their axils ; 
pedicels 3-1 lin. long, tomentose ; calyx-tube 2 lin. long, tubular- 
campanulate, thinly covered with minute branched hairs outside, 
glabrous within; upper tooth 2-1 lin. long, 1} lin. broad, semi- 
circular, decurrent on the tube ; lateral and lower teeth bristle-like, 
3-1 lin. long ; corolla-tube 3} lin. long, glabrous outside, puberulous 
on the lower part within, 14-1} lin. in vertical diam. at the 
obliquely truncate mouth, which forms the upper lip and has a small 
transverse emarginate lobe } lin. long at the apex, and a small tooth 
on each side of it; lower lip 2-24 lin. long, concave or somewhat 
boat-shaped, obtuse ; stamens not exserted beyond the lower lip ; 
upper pair inserted at about 4 of the way up the corolla-tube, with 
free filaments, densely ciliate on their lower half; lower pair 
exceeding the upper, inserted at the base of the lower lip, 2 lin. 
long, with their filaments united for a very short distance at the 
base. 
Katanarrt Recon: Bechuanaland ; Bakwena Territory, 3500 ft., Zolub ! 
Also in Tropical Africa. 
13. O. Gerrardi (N. E. Br.) ; a shrub 3-4 ft. high, woody below, 
the branchlets, both sides of the leaves and the outside of the calyx 
densely clothed with white, somewhat flocculent tomentum of 
stellate hairs ; leaves rather thick ; petiole about 2 lin. long ; blade 
5-8 lin. long, 24-5 lin, broad, ovate or elliptic-oblong, obtuse or 
subacute, somewhat cuneate at the base; inflorescence a raceme or 
few-branched panicle 14-2 in. long; flowers solitary in the axils of 
the bracts, opposite ; lower bracts J—4 lin. long, 1-14 lin. broad, 
narrowly elliptic or oblong-oblanceolate, obtuse, narrowed into a 
short petiole, thick and white-tomentose like the leaves, spreading ; 
upper bracts similar, but rather larger, thinner, rose-coloured 
(Gerrard), less tomentose ; pedicels 1-1} lin. long ; calyx-tube 2}- 
