Shrubs, glabrous or pubescent; stems subterete, erect, branched
Leaves
paired or in whorls of 3, shortly petiolate, tricuspidate or 3-5-setose; stipules with 3-5 linear or filiform colleter-tipped setae from a short base adnate to petioles
Flowers
dimorphic; in terminal corymbose heads
Calyx
entire or 4- or 5-lobed, becoming white; tube small, campanulate; limb strongly accrescent, oblique, dilated, reticulated, shallow
Corolla
5-lobed, valvate, white; tube elongated, densely hairy in throat
Stamens
5, arising from throat or corolla, included or exserted; anthers linear-oblong
Disc
fleshy
Ovary
2(3)-locular, each locule with a slender basal placenta bearing ± 4-6 ovules; style filiform; stigma with 2(4) filiform lobes
Fruit
apparently always indehiscent, obconic, strongly ribbed, ribs running out into accrescent calyx lobes, 1- or 2-seeded
Seeds
narrowly oblong-obconic
x = 11
Nomenclature:
Carphalea
Juss.
Jussieu: 198 (1789)
Verdcourt: 82 (1989)
Dirichletia
Klotzsch
Klotzsch: 494 (1853)
Distribution & Notes:
Global
: Species 14, tropical Africa and Madagascar
Southern Africa
: Species 1:
Carphalea pubescens
(Klotzsch) Verdc., Namibia and Botswana
References:
JUSSIEU, A.L. DE. 1789.
Genera plantarum
. Ziegler, Zürich
KLOTZSCH, J.F. 1853.
Dirichletia
.
Monatsberichte der königlichen Akademie der Wissenschaften
1853
VERDCOURT, B. 1989.
Rubiaceae
.
Flora zambesiaca
5,1
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