Canthium glaucum Hiern
subsp. frangula (S. Moore) Bridson
var. frangula

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Canthium glaucum subsp. frangula var. frangula

Photo: Bart Wursten
Chipote, Mahenye, Ndowoyo CL.

Canthium glaucum subsp. frangula var. frangula

Photo: Bart Wursten
Chipote, Mahenye, Ndowoyo CL.

Canthium glaucum subsp. frangula var. frangula

Photo: Bart Wursten
Along western boundary road, Zambezi National Park.

Canthium glaucum subsp. frangula var. frangula

Photo: Bart Wursten
Along western boundary road, Zambezi National Park.

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

Synonyms: Canthium frangula S. Moore
Common names:
Frequency:
Status: Native
Description:
Multi-stemmed shrub or small tree up to c. 5 m tall. Branches lenticilate, armed with opposite spines up to 2 cm long. Leaves clustered on dwarf spur-branchlets just below the spines, more or less narrowly elliptic, 2.4-6 cm long, usually hairless and green above, much paler and sometimes sparsely pubescent on the veins beneath; hairtuft domatia present; petiole 1-1.6 mm long. Stipules triangular, 1-4 mm long, pubescent on the inside. Flowers in 2-8-flowered clusters, small, whitish or creamy-green. Fruit square in outline, 9-12 mm long, pale red, edible.
Notes: See var. pubescens for comparison
Derivation of specific name: glaucum: bluish-green, glaucous
Habitat: In mopane or Brachystegia woodland riverine thickets, jesse bush, both on Kalahari sand and clay soils, often on termite mounds and sometimes on rocky outcrops.
Altitude range: (metres) 370 - 1380 m
Flowering time:Nov - Jan
Worldwide distribution: Botswana, Caprivi-Namibia, Malawi, Mozambique, Zambia and Zimbabwe.
Zimbabwe distribution: N,W,C,E,S
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Images last updated: Thursday 2 February 2017
Literature:

Bridson, D.M. (1998). Rubiaceae, Part 2 Flora Zambesiaca 5(2) Pages 317 - 318. (Includes a picture).

Coates Palgrave K. (revised and updated by Meg Coates Palgrave) (2002). Trees of Southern Africa 3rd edition. Struik, South Africa Pages 1088 - 1089.

Curtis, B.A. & Mannheimer, C.A. (2005). Tree Atlas of Namibia National Botanic Research Institute, Windhoek Page 620. as Canthium glaucum

Drummond, R.B. (1975). A list of trees, shrubs and woody climbers indigenous or naturalised in Rhodesia. Kirkia 10(1) Page 276. As Canthium frangula

Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 71.

Phiri, P.S.M. (2005). A Checklist of Zambian Vascular Plants Southern African Botanical Diversity Network Report No. 32 Page 87.

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 96.

Van Wyk, B. & Van Wyk, P. (1997). Field Guide to Trees of Southern Africa. Struik, South Africa Pages 260 - 261. (Includes a picture).

Van Wyk, B. & Van Wyk, P. (2013). Field Guide to Trees of Southern Africa (Second edition) Struik, South Africa Pages 306 - 307. (Includes a picture).


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Other sources of information about Canthium glaucum subsp. frangula var. frangula:

Our websites:

Flora of Botswana: Canthium glaucum subsp. frangula var. frangula
Flora of Caprivi: Canthium glaucum subsp. frangula var. frangula
Flora of Malawi: Canthium glaucum subsp. frangula var. frangula
Flora of Mozambique: Canthium glaucum subsp. frangula var. frangula
Flora of Zambia: Canthium glaucum subsp. frangula var. frangula

External websites:

African Plants: A Photo Guide (Senckenberg): Canthium glaucum
African Plant Database: Canthium glaucum
Biodiversity Explorer (Biodiversity of southern Africa): Canthium glaucum
BHL (Biodiversity Heritage Library): Canthium glaucum
EOL (Encyclopedia of Life): Canthium glaucum
ePIC (electronic Plant Information Center): Canthium glaucum
Flora Zambesiaca web site: Canthium glaucum
GBIF (Global Biodiversity Information Facility): Canthium glaucum
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Canthium glaucum
IPNI (International Plant Names Index): Canthium glaucum
Ispot Southern Africa: Canthium glaucum
JSTOR Plant Science: Canthium glaucum
Kew Herbarium catalogue: Canthium glaucum
Mansfeld World Database of Agricultural and Horticultural Crops: Canthium glaucum
The Plant List (version 1.1): Canthium glaucum
Tropicos: Canthium glaucum


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-17

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2017). Flora of Zimbabwe: Species information: Canthium glaucum subsp. frangula var. frangula.
http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=155850, retrieved 12 December 2017

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