Poa binata Nees

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Common names:
A densely caespitose perennial with leaves mostly crowded near the base. Culms up to 60 cm. tall, usually 2-noded, compressed below, terete above, slender, simple or rarely branched below, erect or rarely ascending from a geniculate base, smooth, glabrous. Leaf-sheaths rather tight at first, later somewhat loose, inconspicuously keeled, smooth, glabrous, the lowermost long persistent and splitting into fibres. Ligules 1-3 mm. long, obtuse. Leaf-laminae 2-15(18) x 0·2-0·5 cm., linear, with the apex more or less abruptly narrowed into a subobtuse cucullate point, expanded or folded around the midrib, smooth or scaberulous on the upper surface and along the margins, usually glabrous. Panicle 5-15 cm. long, ovate or triangular to oblong-ovate in outline, erect or nodding, open or rather lax; rhachis slightly grooved, glabrous; branches solitary or paired, rather slender, flexuous, divided, bare of spikelets in the lower half, spreading or deflexed at maturity. Pedicels rather short, smooth or slightly scaberulous. Spikelets 4-6 mm. long, 3-5-flowered, usually crowded towards the apices of the branchlets, ovate-oblong in outline, pale-green, sometimes slightly tinged with purple. Glumes unequal; the inferior 2-3 mm. long, 1-nerved but occasionally with 1 or 2 short additional lateral nerves, ovate-oblong or narrowly elliptic, apex subacute; the superior 3-4 mm. long, 3-nerved, ovate to ovate-elliptic, apex subobtuse, sometimes retuse. Lemmas 4-4·5 mm. long, 5-nerved, broadly elliptic or ovate-oblong, apex obtuse, often slightly retuse, hyaline, dorsally pubescent or glabrous. Paleas c. 3·5 mm. long, scabrous along the keels. Anthers c. 2 mm. long.
Derivation of specific name:
Habitat: On slopes of mountains, on hills, in crevices of rocks and in open mountain grassland
Altitude range: (metres)
Flowering time:
Worldwide distribution: Lesotho, South Africa, 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

Launert, E. (1971). Poaceae Flora Zambesiaca 10(1) Pages 50 - 51.

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 108.

Other sources of information about Poa binata:

Our websites:

Flora of Caprivi: cultivated Poa binata

External websites:

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

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: Poa binata.
https://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=103640, retrieved 12 April 2024

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