Rumex usambarensis (Engl. ex Dammer) Dammer

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Picture: Bart Wursten
Along road between Kaperekeza turn-off and Thazima Gate, Nyika National Park

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Synonyms:	Rumex maderensis sensu J.G. Baker & C.H. Wright non Lowe Rumex nervosus Vahl var. usambarensis Engl. ex Dammer Rumex trinervius Rech. f.
Common names:
Frequency:
Status:	Native
Description:	A straggling, sometimes climbing shrub with stems up to 3 m or more tall. Leaves often clustered, narrowly to broadly elliptic, 3.5-9 cm long, hastate at the base and narrowed above the basal lobes, distinctly 3-veined, hairless; petiole 1-4 cm long. Ocrea 1-1.5 cm long, membranous, entire,falling early. Flowers arranged in 2-6-flowered whorls on pedicels 2-5 mm long; whorls together forming leafless terminal panicles. Outer perianth segments brownish; inner segments red to reddish-brown; stamens 6. Fruit 2-2.5 mm long, trigonous,shiny brown.
Type location:	Tanzania
Notes:
Derivation of specific name:	usambarensis: of the Usambara Mountains, Tanzania
Habitat:	In moist shady places in high rainfall grassland, sometimes along roadsides and in disturbed ground.
Altitude range:	800 - 1900 m
Flowering time:
Worldwide distribution:	DRC, Uganda, Kenya, Tanzania, Malawi and Zambia.
Zambian distribution (Flora Zambesiaca):	N
Zambian distribution (Provinces):	N,Mc
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters:	Display spot characters for this species
Content last updated:	Tuesday 28 August 2018
Literature:	Nogueira, I., Ortiz, S. & Paiva, J.A.R. (2006). Polygonaceae Flora Zambesiaca 9(3) Page 42.

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Flora of Burundi: Rumex usambarensis
Flora of Malawi: Rumex usambarensis
Flora of Zimbabwe: Rumex usambarensis
Flora of Zimbabwe: cultivated Rumex usambarensis

External websites:

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