Shrublets, sometimes rhizomatous with a strong rootstock
Leaves
opposite, rarely in whorls of 3, shortly petiolate; stipules connate at base, villous within, often at length deciduous
Flowers
in simple, axillary cymes, rarely fasicled; bracts and bracteoles present
Calyx
5-partite; segments triangular or linear, obtuse, often foliaceous, sometimes exceeding corolla tube
Corolla
5-lobed, green or greenish yellow to greenish white, glabrous or hairy; lobes variable, reflexed, often apiculate; tube shortly and broadly cylindric, with ring of deflexed hairs inside, throat usually slightly hairy
Stamens
5, arising in corolla mouth, exserted; filaments usually shorter than anthers; anthers lanceolate, sometimes apiculate
Disc
annular, tumid
Ovary
(4)5-locular with a single pendulous ovule in each locule; style slender, terete, exserted; stigmatic knob shortly and broadly cylindric, often sulcate, obscurely (4)5-lobed
Fruit
a globose or obovoid drupe, with 2-5 pyrenes, crowned by persistent calyx limb
x ±11 (aneuploids)
Nomenclature:
Pachystigma
Hochst.
Hochstetter: 234 (1842)
Sonder: 13 (1865) under
Vangueria
Robyns: 117 (1928)
Verdcourt & Bridson: 764 (1991)
Bridson: 241 (1998)
Distribution & Notes:
Global
: Species 10, warm parts of Africa
Southern Africa
: Species 10, Northern Province, Mpumalanga, Swaziland, Free State, KwaZulu-Natal and Eastern Cape
HOCHSTETTER, C.F.F. 1842. Nova genera plantarum Africae tum australis tum tropica borealis proponit et describit.
Flora
25
ROBYNS,W. 1928. Monographieae
Vangueriae
.
Bulletin du Jardin Botanique de l'Etat, à Bruxelles
11
SONDER, O.W. 1865.
Rubiaceae
.
Flora capensis
3
VERDCOURT, B. & BRIDSON, D.M. 1991.
Flora of tropical East Africa
.
Rubiaceae
(part 3)
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