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This species is accepted, and its native range is KwaZulu-Natal (Inanda).
A specimen from Kew's Herbarium

[KBu]

P. Siro Masinde. (2005). A Revision of the African Genus Riocreuxia Decne. (Apocynaceae: Asclepiadoideae-Ceropegieae). Kew Bulletin, 60(3), 401-434. Retrieved from http://www.jstor.org/stable/4111063

Distribution
South Africa.
Ecology
Probably grassland with thickets; altitude, c. 50 m.
Morphology General Habit
A sparsely hairy, leafy climber, 1 m or more high
Morphology Leaves
Leaves herbaceous, spreading; petiole 13 - 25 mm long, terete, pubescent all around but more so in adaxial channel; lamina 40 - 65 x 13 - 25 mm, narrowly elongated deltoid- cordate or cordate-lanceolate, base deeply cordate, apex acuminate or acute; with a broad subtruncate sinus between the semiorbicular incurved or overlapping basal lobes; sparsely and rather minutely pubescent on both sides, margin entire, ciliolate
Morphology Reproductive morphology Flowers Calyx
Sepals linear-subulate or subulate-lanceolate, 2 - 3 x c. 0.5 mm at base, glabrous
Morphology Reproductive morphology Flowers Corolla
Corolla 14 - 16 mm long, straight, glabrous throughout; tube slightly globose- inflated at base, 6 - 8 mm long x 2 - 3.5 mm diam.; exterior apparently pale yellowish or whitish; lobes attenuate-linear, 6 - 8 x 0.6 - 0.8 mm wide at base, erect-connivent, connate at apex to form a ± oblong- ellipsoid cage-like structure c. 3 - 4 mm diam., apparently dark brown
Morphology Reproductive morphology Flowers Corona
Corona ± cupular, c. 1.6 x 1.6 mm, shortly stipitate, biseriate, whitish-translucent, glabrous throughout; outer lobes narrowly deltoid or deltoid-ovate, obtuse, subtruncate or minutely notched at the apex, forming 5 large pockets, radiately spreading c. 0.7 x 0.4 mm broad at base, adaxially concave-channelled; inner lobes dorsiventrally compressed, linear or linear-obtuse, acute or obtuse, c. 0.4 x c. 0.3 mm, ± as long as anthers and closely applied to their backs; guide rails c. 250 μm long
Morphology Reproductive morphology Flowers Gynoecium Carpels
Carpels glabrous.
Morphology Reproductive morphology Flowers Pollinarium
Pollinia 260 x 170 μm, elliptic-oblong with an acute pellucid margin at apex: corpusculum elliptic, 17 x 60 μm
Morphology Reproductive morphology Inflorescences
Inflorescence long, slender, branched, paniculate cymes up to 70 mm long; bracts subulate, c. 2 mm long, glabrous; peduncle 25 - 60 mm long, c. 1 mm diam., unifariously puberulous, branching at the node or at a distance, bearing 2(- 3) close pseudoumbels with or without a third sessile one at the base, successive fascicles ± touching; pseudoumbels 8 - 24-flowered, somewhat flat-topped, many flowers opening simultaneously; pedicels long and slender, 10 - 20 mm, c. 0.3 mm diam., all more or less incurved, glabrous
Morphology Stem
Stem twining, branching; nodes with a distinct ring of simple hairs; internodes 40 - 110 mm long, c. 2 mm diam., unifariously puberulous
Note
The short inflorescences which are rather dense and not much branched, and the shape of the outer corona lobes readily distinguish Riocreuxia woodii. It is a rare species, only known from two collections at the type locality. Vegetative, corolla and corona morphology suggest a close relationship with R. torulosa and R. polyantha. The short stipe, unifariously thinly puberulous stems, glabrescent leaves, corolla not thin to reveal the corona when dry, size of inner corona lobes in relation to anthers are all characters that suggest affinity with R. polyantha. The corona is similar to forms in R. torulosa. N. E. Brown cited two syntypes, Wood 338 and Herb. Natal 181 of which the former specimen, part at K, is selected here as the lectotype, as it is a good representative and also with a duplicate in PRE.
Phenology
Flowering in June.
Type
South Africa, Natal, Inanda, June 1879, Wood 338 (K!, lectotype; PRE, isolectotype).

Extinct in:

KwaZulu-Natal

Riocreuxia woodii N.E.Br. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Wood, J.M. [338], South Africa K000305699 Unknown type material

First published in W.H.Harvey & auct. suc. (eds.), Fl. Cap. 4(1): 803 (1908)

Accepted by

  • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa an annotated checklist Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.
  • Humphreys, A.M., Govaerts, R., Ficinski, S.Z., Nic Lughadha, E. & Vorontsova, M.S. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery Nature Ecology & Evolution 3: 1043-1047.

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Bulletin
Kew Bulletin
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0