Leaves
in pseudowhorls of 3-5, very narrowly lanceolate-linear to linear, straight, margins recurved producing 2 prominent grooves on undersurface, softly pubescent, later glabrescent
Flowers
on short axillary shoots, in groups of up to 3, subtended by 2 opposite foliaceous bracts as long as the calyx
Corolla
regular, tubular, very slightly curved at base, red, softly sericeous; lobes broadly lanceolate, black, densely sericeous
Stamens
5, equal, inserted between corolla lobes on short filaments
Ovary
conic-ovoid, glabrous, 2-locular with 2 or 3 ovules in each locule, with 1(or 2) erect, the other(s) pendent; style glabrous, filiform, exserted; stigma bilobed
Seeds
ovoid, reticulate, yellowish brown
Nomenclature:
Retzia
Thunb.
Thunberg: 55 (1776)
Leeuwenberg: 333 (1964)
Goldblatt & Keating: 321 (1976)
Dahlgren et al.: 545 (1979)
Cronquist: 867 (1981)
Bremer et al.: 213 (1994)
Distribution & Notes:
Southern Africa
: Species 1:
Retzia capensis
Thunb., Western Cape mountains
References:
BREMER, B., OLMSTEAD, R.G., STRUWE, L. & SWEERE, J. 1994. rbcL sequences support exclusion of
Retzia
,
Desfontainia
and
Nicodemia
from the GENTIANALES.
Plant Systematics and Evolution
190, 3-4
CRONQUIST, A. 1981.
An integrated system of classification of flowering plants
. Columbia University Press, New York
DAHLGREN, R., NIELSEN, B.J., GOLDBLATT, P. & ROURKE, J.P. 1979. Further notes on
Retziaceae
: its chemical contents and affinities.
Annals of the Missouri Botanical Garden
66
GOLDBLATT, P. & KEATING, R.C. 1976. Chromosome cytology, pollen structure and relationship of
Retzia capensis
.
Annals of the Missouri Botanical Garden
63
LEEUWENBERG, A.M. 1964. The
Loganiaceae
of Africa VI.
Retzia
.
Acta Botanica Neerlandica
13
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