Orthosiphon. | LABIATA (Brown). 257 
thinly pilose-pubescent above and more thickly so beneath, green on 
both sides, but apparently darker above; veins impressed above, 
prominent beneath ; whorls 5-8, about $—3 in. apart, 4-6-flowered, 
in simple racemes; bracts not seen, very deciduous; pedicels 
1-1} lin. long, puberulous; calyx-tube 14 (in fruit 2) lin. long, 
campanulate, puberulous outside, glabrous within ; upper tooth 3 lin. 
long and broad, suborbicular, decurrent on the tube ; lateral and 
lower teeth bristle-like, with the lower pair 2 lin. long, lateral 
shorter ; corolla very variable; tube 23-43 lin. long, slender, 
enlarging to 1-1} lin. in vertical diameter at the compressed trun- 
cate or oblique mouth, which forms the upper lip and has a small 
apical lobe } lin. long, } lin. broad and transverse in the short- 
tubed and $ lin. long and broad and subquadrate in the long-tubed 
corollas ; lower lip 14-14 lin. long, elliptic-ovate, rather abruptly 
acute ; stamens all exserted far beyond the lower lip; filaments of 
the lower pair united for the greater part of their length, exceeding 
the upper pair, 24 lin. long in the short-tubed and 4 lin. long in 
the long-tubed flowers; nutlets } lin. long, compressed, elliptic in 
outline, dorsally keeled, smooth, pale brown. 
Kavanarti Reaion: Transvaal ; Komati Poort, Schlechter, 11746 ! 
The range in the variation of the length of the corolla-tube of this plant, even 
on the same raceme, is remarkable; many species vary in this character, but I 
have seen no other in which it is so great. 
24. 0. affinis (N. E. Br.) ; stems much branched at the upper 
part, lower not seen, obtusely 4-angled, rather thinly pubescent 
with small upceurved hairs; leaves {-1} in. long, }-} in. broad, 
rather narrowly lanceolate, acute, cuneately tapering below into 
the 1-2 lin.-long petiole, finely toothed along the margins, green 
and minutely pubescent on both sides, not ciliate ; veins impressed 
on the upper surface; racemes all attaining about the same level, 
2-34 in. long; whorls 4-9, about $—3? in. apart, 4—6-flowered ; 
bracts very deciduous, about } in. long, ovate, shortly acuminate, 
concave, with a few minute hairs on the back, white-ciliate ; 
pedicels 1-1} lin. long, puberulous; calyx-tube 1} lin. long, pube- 
rulous outside ; upper tooth 1 lin. long and rather more in breadth, 
suborbicular, shortly decurrent on the tube, dark’ purple ; lateral 
and lower teeth subequal, 3—? lin. long, bristle-like ; corolla-tube 
about 34 lin. long, gradually enlarging to the } in.-high obliquely 
truncate mouth which forms the upper 3-lobed lip, thinly puberu- 
lous outside; middle lobe of upper lip } lin. long, ? lin. broad, 
transversely oblong, subtruncate ; lateral lobes very small ; lower 
lip 14-1} lin. long, elliptic-ovate, obtuse, concave ; stamens exserted 
far beyond the lower lip; upper pair inserted at about } of the 
way up the corolla-tube ; lower pair } in. long, united nearly or 
quite to their apex. 
Katanart Rearon: Transvaal; Woodbush Mountains, 5500 ft., Schlechter, 
4737! near Potgieters, 3700 ft., Bolus, 11146! 
VOL. V.—SECT. I. s 
