Sonchus dregeanus DC.

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Synonyms: Sonchus ecklonianus DC.
Common names:
Frequency:
Status: Native
Description:
An erect perennial herb 12–90 cm. tall, growing from a semi-woody taproot. Stems 1-several-branched from near the base, sometimes simple, ribbed. Leaves mostly in a basal rosette, very narrowly-oblanceolate to linear-elliptic, up to 12(19) cm long, blue-green; margin remotely lobed to sinuate-dentate or sharply denticulate, sometimes entire. Leaves along the stem few, grading into leaf-like bracts, or absent; lanceolate, sagittate-auriculate at the base; margin entire. Capitula few in lax heads, sometimes solitary; mature capitula often subtended by 1-several subsessile buds; capitula bases and subtending buds densely white woolly. Involucres cylindric-campanulate, up to c. 19 mm long in fruiting capitula, white-lanate below. Phyllaries olive-green, the outermost ovate, c. 3 mm long, woolly; the innermost c. 15 mm in flowering capitula, increasing to c. 19 mm in fruiting capitula, hairless, or setose on the midribs and apices. Florets numerous, yellow, c. 15 mm long; ligule c. 4 mm. long, strap-shaped. Achenes narrowly ellipsoid, c. 5 mm. long, pale-brown, slightly compressed, strongly 4-ribbed with 1–2 secondary ribs between; pappus white, c. 10 mm. long, composed of few minutely barbellate setae intermixed with down-like hairs.
Notes:
Derivation of specific name:
Habitat: Open grassland on sandy soils and sometimes in disturbed areas.
Altitude range: (metres)
Flowering time:
Worldwide distribution: Zimbabwe, Lesotho and Mpumalanga, KwaZulu-Natal, Eastern Cape South Africa. Also in Madagascar.
Zimbabwe distribution: W,S
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Literature:

Chapano, C., Mugarisanwa, N.H. (2003). Plants of the Matobo District National Herbarium and Botanic Garden, Zimbabwe Page 33.

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 28.

Pope, G.V. (1992). Compositae Flora Zambesiaca 6(1) Page 224.

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 38.


Other sources of information about Sonchus dregeanus:

Our websites:

Flora of Botswana: Sonchus dregeanus

External websites:

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


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-19

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2019). Flora of Zimbabwe: Species information: Sonchus dregeanus.
https://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=162120, retrieved 19 May 2019

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