Thesium nigricans Rendle

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Thesium nigricans

Photo: Bart Wursten
John Meikle Forestry Reserve, Stapleford

Thesium nigricans

Photo: Bart Wursten
John Meikle Forestry Reserve, Stapleford

Thesium nigricans

Photo: Bart Wursten
John Meikle Forestry Reserve, Stapleford

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

Synonyms: Thesium scabridulum A. W. Hill
Common names:
Frequency: Locally common
Status: Native
Much-branched, perennial herb. Stems erect, decumbent or scrambling, 0.3-1 m high, ribbed, leafy. Leaves ascending-recurved to spreading, linear, apiculate, 7-20 mm long, decurrent into the ribs of the stems and branches, smaller towards the top and merging into the bracts. Inflorescences with c 20 flowers; bracts leaf-like; bracteoles minute, falling early. Flowers white or yellowish-green, tubular, 4.5-6.5 mm long. Fruit 6-7 mm long. Flowers solitary in axils of bracts, 1-6 together forming small terminal racemes on the branchlets, the whole forming a profusely branched panicle. Bracts linear, 3-12.5 mm long, leaf-like, adnate to almost the entire pedicel. Bracteoles 2, similar to bracts but smaller. Pedicels 0.5-3 mm long or sometimes flowers sessile. Perianth pale-yellowish-green or whitish; lobes usually 5, hairless. Fruit 1.8-2.5 mm long, light yellowish-brown to red-brown with faintly raised ribs and reticulations.
Derivation of specific name:
Habitat: In montane scrub and along margins of forest, sometimes in Brachystegia woodland
Altitude range: (metres) 1150 - 2500 m
Flowering time:
Worldwide distribution: Southern Malawi, Mozambique and Zimbabwe
Zimbabwe distribution: E
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: Saturday 12 January 2019

Chapano, C. & Mamuto, M. (2003). Plants of the Chimanimani District National Herbarium and Botanic Garden, Zimbabwe Page 55.

Goodier, R. & Phipps, J.B. (1961). A revised checklist of the vascular plants of the Chimanimani Mountains Kirkia 1 Page 55.

Hilliard, O.M. (2006). Santalaceae Flora Zambesiaca 9(3) Pages 213 - 215. (Includes a picture).

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 76.

Strugnell, A.M. (2006). A Checklist of the Spermatophytes of Mount Mulanje, Malawi Scripta Botanica Belgica 34 National Botanic Garden of Belgium Page 172.

Wursten, B., Timberlake, J. & Darbyshire, I. (2017). The Chimanimani Mountains: an updated checklist. Kirkia 19(1) Page 99.

Other sources of information about Thesium nigricans:

Our websites:

Flora of Malawi: Thesium nigricans
Flora of Mozambique: Thesium nigricans

External websites:

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

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Zimbabwe: Species information: Thesium nigricans., retrieved 20 May 2024

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