Pentarrhinum abyssinicum Decne.
subsp. abyssinicum

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Pentarrhinum abyssinicum subsp. abyssinicum

Habit
Scrub munga woodland margin
Dabuyu Farms, Lilayi, Lusaka, Lusaka Distr.
Feb 2023
Photo: Nick Wightman

Pentarrhinum abyssinicum subsp. abyssinicum

Habit
Scrub munga woodland margin
Dabuyu Farms, Lilayi, Lusaka, Lusaka Distr.
Feb 2023
Photo: Nick Wightman

Pentarrhinum abyssinicum subsp. abyssinicum

Inflorescence
Scrub munga woodland margin
Dabuyu Farms, Lilayi, Lusaka, Lusaka Distr.
Feb 2023
Photo: Nick Wightman

Pentarrhinum abyssinicum subsp. abyssinicum

Flowers
Scrub munga woodland margin
Dabuyu Farms, Lilayi, Lusaka, Lusaka Distr.
Feb 2023
Photo: Nick Wightman

Pentarrhinum abyssinicum subsp. abyssinicum

Inflorescence
Scrub munga woodland margin
Dabuyu Farms, Lilayi, Lusaka, Lusaka Distr.
Feb 2023
Photo: Nick Wightman

Pentarrhinum abyssinicum subsp. abyssinicum

Flowers
Scrub munga woodland margin
Dabuyu Farms, Lilayi, Lusaka, Lusaka Distr.
Feb 2023
Photo: Nick Wightman

Pentarrhinum abyssinicum subsp. abyssinicum

Flowers
Scrub munga woodland margin
Dabuyu Farms, Lilayi, Lusaka, Lusaka Distr.
Feb 2023
Photo: Nick Wightman

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Species details: Click on each item to see an explanation of that item (Note: opens a new window)

Synonyms: Cynanchum ethiopicum Liede & Khanum
Common names:
Frequency: Occasional
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.
This subspecies differs from subsp. angolense in having a corolla less than 10 mm in diameter, corolla lobes fully reflexed at anthesis with generally glabrous margins and growing in grassland to open woodland.
Type location:
Ethiopia
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 (now Ethiopia).
Habitat: Grassland, open scrub or deciduous woodland, less often forest.
Altitude range: 1100 - 2200 m
Flowering time:Feb - Apr
Worldwide distribution: From Cameroon, Ethiopia and Eritrea south through Kenya, Tanzania, DRC, Malawi, Zambia, Angola, Namibia, Zimbabwe to north eastern South Africa
Zambian distribution (Flora Zambesiaca): N,C,S
Zambian distribution (Provinces): N,C,Lk,S
Growth form(s): Climber.
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Content last updated: Tuesday 21 March 2023
Literature:

Bruyns, P.V. (2014). The Apocynaceae of Namibia Strelitzia 34 SANBI, Pretoria, South Africa Page 59.

Golding, J.S. (ed.) (2002). Namibia Plant Red Data List. Southern African Plant Red Data Lists. SABONET 14 Page 75. As subsp. abyssinicum and subsp. angolense

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 481 - 482.

Other sources of information about Pentarrhinum abyssinicum subsp. abyssinicum:

Our websites:

Flora of Caprivi: Pentarrhinum abyssinicum subsp. abyssinicum
Flora of Malawi: Pentarrhinum abyssinicum subsp. abyssinicum
Flora of Mozambique: Pentarrhinum abyssinicum subsp. abyssinicum
Flora of Zimbabwe: Pentarrhinum abyssinicum subsp. abyssinicum

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. abyssinicum.
https://www.zambiaflora.com/speciesdata/species.php?species_id=225920, retrieved 19 July 2024

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