Senna hirsuta (L.) H.S. Irwin & Barneby

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Senna hirsuta

Photo: Bart Wursten
Zona Tea Estates, near Mt Selinda

Senna hirsuta

Photo: Bart Wursten
Zona Tea Estates, near Mt Selinda

Senna hirsuta

Photo: Bart Wursten
Zona Tea Estates, near Mt Selinda

Senna hirsuta

Photo: Bart Wursten
Zona Tea Estates, near Mt Selinda

Senna hirsuta

Photo: Bart Wursten
Zona Tea Estates, near Mt Selinda

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

Synonyms: Cassia hirsuta L.
Common names: Woolly senna (English)
Frequency: Local
Status: Introduced
Description:
Herbaceous shrub, up to c. 2 m tall, sometimes softly woody near the base. Stems ridged, densely hairy. Leaves paripinnate with 4-5 pairs of leaflets; leaflets 2.8-10.5 cm long, terminal par usually largest, elliptic to ovate, pointed at the apex, hairy on both surfaces; petiole 3-6.6 cm long densely hairy, with a single large cone-shaped gland near the base of the petiole. Stipules linear, 6-7 mm long, frilled with long hairs. Inflorescences axillary c. 3 cm long. Flowers orange-yellow with darker brown veins when older. Pods 6-13 cm long, straight or slightly curved, covered in long whitish hairs.
Notes: Apparently still local in Zimbabwe but possibly under recorded
Derivation of specific name: hirsuta: covered with long, moderately stiff and not interwoven hairs; hirsute
Habitat: A weed of cultivation in areas of higher rainfall.
Altitude range: (metres) 850 m (approx)
Flowering time:Apr - Jun
Worldwide distribution: Native to South America and the West Indies. A widespread weed in tropical Africa and Asia.
Zimbabwe distribution: E
Growth form(s): Annual, perennial, shrub over 2 m.
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Images last updated: Sunday 8 July 2012
Literature:

Bromilow, C. (1995). Problem Plants of South Africa. Briza Publications, Arcadia. Page 179. (Includes a picture).

Brummitt, R.K., Chikuni, A.C., Lock, J.M. & Polhill, R.M. (2007). Leguminosae Subfamily Caesalpinioideae Flora Zambesiaca 3(2) Pages 153 - 155.

Drummond, R.B. (1972). A list of Rhodesian Legumes. Kirkia 8(2) Page 212. as Cassia hirsuta

Drummond, R.B. (1975). A list of trees, shrubs and woody climbers indigenous or naturalised in Rhodesia. Kirkia 10(1) Page 243. As Cassia hirsuta

Henderson, L. (2001). Alien weeds and invasive plants Plant Protection Research Institute Handbook No. 12. Plant Protection Research Institute, Agricultural Research Council, South Africa. Page 209. (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 44.


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Other sources of information about Senna hirsuta:

Our websites:

Flora of Malawi: Senna hirsuta

External websites:

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


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: Senna hirsuta.
http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=127060, retrieved 22 September 2017

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