Pentarrhinum abyssinicum Decne.
subsp. angolense (N.E. Br.) Liede & Nicholas

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Synonyms: Cynanchum ethiopicum Liede & Khanum subsp. angolense (N.E.Br) Leide & Khanum
Pentarrhinum abyssinicum var. angolense N.E.Br.
Common names:
Frequency: Rare
Status: Native
Description:
Slender perennial twining to 5 m, stems simple or branched, containing white latex. Leaves with petiole 1.5 - 5 cm long, minutely pubescent; lamina 3 - 10 x 1.5 - 6 cm, ovate to broadly triangular, apex acute or attenuate, base weakly to strongly cordate, shortly pubescent or glabrous. Inflorescences extra-axillary, simple or irregularly branched, umbelliform (most forest forms) or the flowers scattered singly or in pairs along the inflorescence axes (more open habitats). Sepals 1 - 3 mm long, triangular, acute. Corolla greenish white or pale yellow, less than 10 mm diameter, 2 - 6 x 1 - 2 mm, ovate to oblong, lobes fully reflexed at anthesis, margins generally glabrous. Corona white, divided almost to the base; lobes spreading or erect, 1.5 - 2.5 mm long, slightly longer than the staminal column, thin or somewhat fleshy, the lateral and apical margins in-rolled forming a weakly to strongly developed apical tooth on the inner face. Follicles occurring singly or in pairs, 5–6 × 1 cm, lanceolate in outline, tapering to a weakly clavate tip, smooth or with irregular soft processes. Mature seeds not seen.
Type location:
Angola
Notes: The genus Pentarrhinum has been absorbed within an expanded concept of Cynanchum by Bruyns et al. (S. African J. Bot. 112: 339-436 [2017]).
Derivation of specific name: abyssinicum: of Abyssinia (Ethiopia)
angolense: of Angola
Habitat: Wet forest
Altitude range: 1400 - 1800 m
Flowering time:Apr - Jul
Worldwide distribution: Cameroon, Kenya, Tanzania, Uganda, DRC, Malawi, Zambia, Angola, Namibia
Zambian distribution (Flora Zambesiaca): C
Zambian distribution (Provinces): C
Growth form(s): Climber.
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Literature:

Goyder, D.J., Gilbert, M.G. & Venter, H.J.T. (2020). Apocynaceae (Part 2) Flora Zambesiaca 7(2) Pages 338 - 339.

Liede, S. & Nicholas, A. (1992). A Revision of the Genus Pentarrhinum E. Meyer (Asclepiadaceae) Kew Bulletin 47(3) Pages 482 - 484. (Includes a picture).

Other sources of information about Pentarrhinum abyssinicum subsp. angolense:

Our websites:

Flora of Malawi: Pentarrhinum abyssinicum subsp. angolense

External websites:

African Plants: A Photo Guide (Senckenberg): Pentarrhinum abyssinicum
BHL (Biodiversity Heritage Library): Pentarrhinum abyssinicum
EOL (Encyclopedia of Life): Pentarrhinum abyssinicum
GBIF (Global Biodiversity Information Facility): Pentarrhinum abyssinicum
Google: Web - Images - Scholar
iNaturalist: Pentarrhinum abyssinicum
IPNI (International Plant Names Index): Pentarrhinum abyssinicum
JSTOR Plant Science: Pentarrhinum abyssinicum
Mansfeld World Database of Agricultural and Horticultural Crops: Pentarrhinum abyssinicum
Plants of the World Online: Pentarrhinum abyssinicum
Tropicos: Pentarrhinum abyssinicum
Wikipedia: Pentarrhinum abyssinicum


Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-24

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2024). Flora of Zambia: Species information: Pentarrhinum abyssinicum subsp. angolense.
https://www.zambiaflora.com/speciesdata/species.php?species_id=232520, retrieved 26 February 2024

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