252 LABIATA (Brown). | Orthosiphon. 
3-9 lin. long, 3-1} lin. broad, linear (probably sometimes also ovate), 
obtuse, strongly revolute along the margins, entire, pubescent 
above with rather long silky hairs, densely white-tomentose beneath 
with similar hairs ; whorls 3-5, about 3-6 lin. apart, 4-6-flowered, 
in simple racemes #—1} in. long; bracts falling away before the 
corolla is exserted from the calyx, 3 lin. (or more?) long, very 
broadly ovate, cuspidate-acuminate, deeply concave, pubescent ; 
pedicels 4—? lin. long, densely pilose with simple and gland-tipped 
hairs ; calyx-tube 13-1} lin. long, slightly enlarging in fruit, pilose 
like the pedicels outside; upper tooth 7-1 lin. long and broad, 
broadly ovate, acute, 4 lower teeth 1—3 lin. long, bristle-like, ciliate 
chiefly with glandular hairs; corolla twice as long as the calyx, 
white ; tube 34-4} lin. long, curved, rather abruptly dilated in the 
upper half, glabrous outside, pubescent within ; upper lip 14 lin. 
long, unequally 3-lobed ; terminal lobe } lin. long, } lin. broad, 
transversely oblong, obtuse, with a few minute hairs on the back ; 
lateral lobes very small, rounded; lower lip } lin. long, deeply 
concave, with incurved margins, obtuse, pubescent outside ; stamens 
exserted, slightly unequal ; upper pair inserted 14-2 lin. above the 
base of the corolla-tube, 34 lin. long, their filaments free, con- 
tiguous, flattened, ciliate along one margin for about 3 of their 
length ; lower pair inserted at the base of the lower lip, 14 lin. 
long, their filaments united nearly to the apex, glabrous ; stigma 
clavate, emarginate or minutely bifid; nutlets 1 lin. long, oblong, 
slightly compressed, light brown, shining. 
Katanari Region: Transvaal ; Mac Mac, Mudd! 
17. 0. decipiens (N. E. Br.) ; branches and leaves exactly as in 
O. albiflorus ; whorls 4—} in. apart, 4-6-flowered, in a raceme 13-2} 
in. long ; bracts 4—5 lin. long, 2-3 lin. broad, ovate, acuminate, thinly 
adpressed-pubescent, somewhat tomentose-ciliate, apparently rosy- 
purple, at first closely imbricate, covering the buds and forming an 
ovoid tip to the inflorescence, deciduous; pedicels 1-1} lin. long, 
pubescent ; calyx-tube 3-34 in. long, tubular, pubescent and 
glandular outside; upper tooth 11-1} lin. long, 14 lin. broad, 
orbicular-ovate, very shortly and obtusely pointed ; 4 lower teeth 
subequal, 1 lin. long, bristle-like from a broader base ; corolla twice 
as long as the calyx, glabrous, curved at the middle ; tube 7-74 lin. 
long, slender in the lower half, dilated and compressed at the upper 
part; upper lip 2 lin. long, unequally 3-loked, with the terminal 
lobe 3 lin. long, $ lin. broad, ovate, obtuse; lateral lobes very 
small, rounded ; lower lip 1-1} lin. long, deeply boat-shaped, 
obtuse ; stamens slightly unequal, much exserted; upper pair 
inserted at the middle of the corolla-tube, 6-64 lin. long, with free 
flattened filaments, ciliate on one margin at the basal part ; lower 
pair inserted shortly below the base of the lower lip, 3 lin. long, 
slightly exceeding the upper pair, with their filaments united nearly 
to the apex, glabrous, 
