Leaves
opposite or occasionally ternate, petiolate, elliptic; stipules ovate, hairy within
Flowers
solitary, sessile
Calyx
with tube usually turbinate to cylindrical; limb tube velvety inside; lobes present or 0, erect
Corolla
5-lobed, white with maroon streaks or speckles; lobes obovate-oblong; tube cylindric below, campanulate above, hairy within lower portions
Stamens
5, arising in corolla mouth, subexserted; anthers sessile, linear
Disc
tumid
Ovary
1-locular, with 2 parietal placentas opposite each other and sometimes partially fused; ovules many; style glabrous, linear, exserted; pollen presenter narrowly fusiform to club-shaped with stigmatic surface confined to shortly bilobed apex
Fruit
globose, sometimes crowned with persistent calyx limb
Seeds
many, smooth, embedded in pulpy placental tissue, forming a solid mass
x = 11
Nomenclature:
Rothmannia
Thunb.
Thunberg: 65 (1776)
Phillips: 726 (1951)
Bridson & Verdcourt: 511 (1988)
Gardenia
Ellis sect.
Rothmannia
(Thunb.) Endl.
Endlicher: 562 (1838)
Sonder: 4 (1865)
Distribution & Notes:
Global
: Species 40, tropical Africa, Asia and Seychelles
Southern Africa
: Species 3, in eastern regions, absent from Namibia, Free State, Lesotho, Northern and Western Cape
References:
BRIDSON, D.M. & VERDCOURT, B. 1988.
Flora of tropical East Africa
.
Rubiaceae
(part 2)
ENDLICHER, S.L. 1838.
Genera plantarum
8. Fr. Beck, Vienna
PHILLIPS, E.P. 1951. The genera of South African flowering plants.
Memoirs of the Botanical Survey of South Africa
No. 25
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