Acanthaceae
-
Acanthoideae
-
Justicieae
-
Justiciinae
-
Rhinacanthus
Nees
Description
:
Herbs or suffrutices, often with ribbed branches
Leaves
petiolate, entire or obscurely undulate-crenate
Inflorescence
terminal, panicles or scorpioid cymes of monochasial cymes or thyrses; bracts and bracteoles small, linear
Calyx
regular, hairy or with stalked glands; tube shorter than lobes; lobes 5, linear-lanceolate
Corolla
2-lipped, pilose; upper lip entire or emarginate, rugula distinct; lower lip 3-lobed; aestivation ascending; tube much longer than lobes, cylindric
Androecium
: fertile stamens 2, arising in mouth of corolla, exserted; filaments linear; anthers 2-thecous; thecae superposed, muticous; staminodes 0
Pollen
prolate, 3-colporate, with pseudocolpi; surface reticulate
Disc
shallowly cupular, with V-shaped slit, sometimes with 2 awns
Gynoecium
: ovary with 2 ovules in each locule, ± ellipsoid, hairy; style filiform, running in rugula, exserted; style branches 2, equal, cylindriform, longer than broad
Capsule
oblong, hairy, stipitate, with inelastic placental bases
Seeds
suborbicular or transversely oblong; surface rough and tuberculate
x = 10 (polyploidy)
Nomenclature:
Rhinacanthus
Nees
Nees von Esenbeck: 76 (1832)
Balkwill: 11 (1995)
Distribution & Notes:
Global
: Species ± 22, Africa to Asia
Southern Africa
: Species 3, N Namibia, Swaziland, northern and eastern provinces of South Africa
References:
BALKWILL, K. 1995.
Rhinacanthus
.
Flora of southern Africa
30,3,1
NEES VON ESENBECK, C.G.D. 1832.
Acanthaceae
indiae orientalis. In N.Wallich,
Plantae asiaticae rariores
3. Treuttel & Würtz, London
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