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This species is accepted, and its native range is Tanzania (Uluguru Mountains), N. Malawi.
A specimen from Kew's Herbarium

[FTEA]

Apocynaceae (part 2), David Goyder, Timothy Harris, Siro Masinde, Ulrich Meve, Johan Venter. Flora of Tropical East Africa, 2012

Morphology General Habit
Slender herbaceous twiner to ± 3 m, stems uniformly spreading-pubescent
Morphology Leaves
Leaves not succulent; petiole 1–3.5 mm long, pubescent with spreading hairs; lamina linear-lanceolate to broadly ovate, 0.7–1.6 × 0.2–0.8 cm, apex acute or occasionally rounded, minutely apiculate, base rounded to subcuneate and with minute colleters, margins minutely undulate or crisped, minutely pubescent with any indumentum ± restricted to margins and principal veins
Morphology Reproductive morphology Inflorescences
Inflorescences slender, extra-axillary, pedunculate, with very open branching.
Morphology Reproductive morphology Inflorescences Peduncles
Peduncles (to 1st branching point) 0.5–2 cm long, glabrous or minutely spreading pubescent.
Morphology Reproductive morphology Inflorescences Bracts
Bracts minute.
Morphology Reproductive morphology Flowers Pedicel
Pedicels 0.3 cm long, glabrous
Morphology Reproductive morphology Flowers Calyx
Calyx lobes ovate to narrowly triangular, 0.5–1 mm long, glabrous or minutely pubescent
Morphology Reproductive morphology Flowers Corolla
Corolla greenish white to deep pink or purple, rotate, united at the base only, glabrous; lobes ovate, 1–2 × 0.7–1 mm, apex rounded to subacute
Morphology Reproductive morphology Flowers Gynostegium
Gynostegium purple or green, 0.3 mm long
Morphology Reproductive morphology Flowers Androecium Stamens
Staminal corona lobes fleshy, ovoid, 0.2–0.3 mm long, radiating from the staminal column and adnate to it to the base of the anthers
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther wings 0.1 mm long.
Morphology Reproductive morphology Flowers Pollinarium
Pollinaria minute, corpusculum ± 0.06 mm long
Morphology Reproductive morphology Flowers Gynoecium Style
Stylar head flat
Morphology Reproductive morphology Fruits
Follicles usually single, occasionally paired and held at ± 180°, narrowly fusiform, 4–5 × ± 0.3 cm, with a long slender beak, smooth.
Morphology Reproductive morphology Seeds
Seed not seen.
Ecology
Uluguru mountains, Udzungwa Escarpment and Lulando forest Moist forest; 1100–1800 m
Note
One element of Polhill & Wingfield 4671 (the other element is Tylophora sp. F) appears to be this species, but the leaves are much larger (to 2.7 × 1.2 cm), and the collection was made at higher altitude – 2200 m near the Lukwangule plateau.
Distribution
Flora districts: T6 T7 Range: Endemic to

Native to:

Malawi, Tanzania

Vincetoxicum gracillimum (Markgr.) Meve & Liede appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Drummond, R.B. [2224], Tanzania Tylophora gracillima 4071.000
Bruce, E.M. [342], Tanzania Tylophora gracillima K000305324
Schlieben, H.J. [3067], Tanzania Tylophora gracillima K000614049 isotype
Mwangoka, M.A. [3969], Tanzania Tylophora gracillima K000614871

First published in Phytotaxa 369: 147 (2018)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.
  • Goyder, D.J., Gilbert, M.G. & Venter, H.J.T. (2020). Flora Zambesiaca 7(3): 1-375. Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Goyder, D.J., Gilbert, M.G. & Venter, H.J.T. (2020). Flora Zambesiaca 7(3): 1-375. Royal Botanic Gardens, Kew.
  • Goyder, S., Harris, T., Masinde, S., Meve, U. & Venter, J. (2012). Flora of Tropical East Africa, Apocynaceae(2): 1-530.

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

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 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