Pentodon pentandrus (Schumach. & Thonn.) Vatke
var. pentandrus

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Photo: Bart Wursten
Island 2, Katombora, Zambezi

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Synonyms:	Hedyotis pentandra Schumach & Thonn. Oldenlandia macrophylla DC. Oldenlandia pentandra (Schumach & Thonn.) DC. Pentodon abyssinicus Hochst.
Common names:
Frequency:
Status:	Native
Description:	Annual or short-lived perennial herb with single, procumbent or suberect stems. Leaves opposite, linear-lanceolate to elliptic. Flowers on long peduncles in axillary few-flowered inflorescences, white, pale blue or mauve with soft hairs on the throat and corolla.
Notes:
Derivation of specific name:	pentandrus: with five stamens.
Habitat:	In muddy soil in riverine grassland and Phragmites or Papyrus swamps.
Flowering time:	Apr
Worldwide distribution:	Widespread in Tropical Africa, Madagascar and Arabia. Also in Southern USA,Cuba, Nicaragua and Brazil.
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters:	Display spot characters for this species
Literature:	Burrows, J.E. & Willis, C.K. (eds) (2005). Plants of the Nyika Plateau Southern African Botanical Diversity Network Report No. 31 SABONET, Pretoria Page 251. (Includes a picture). Heath, A. & Heath, R. (2009). Field Guide to the Plants of Northern Botswana including the Okavango Delta Kew Publishing Page 56. (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 73. Phiri, P.S.M. (2005). A Checklist of Zambian Vascular Plants Southern African Botanical Diversity Network Report No. 32 Page 91. Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 98. Verdcourt, B. (1988). Rubiaceae, Part 1 Flora Zambesiaca 5(1) Pages 116 - 118.

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Flora of Botswana: Pentodon pentandrus var. pentandrus
Flora of Malawi: Pentodon pentandrus var. pentandrus
Flora of Zambia: Pentodon pentandrus var. pentandrus
Flora of Zimbabwe: Pentodon pentandrus var. pentandrus

External websites:

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