Eragrostis porosa Nees

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Synonyms: Eragrostis podotricha Chiov.
Common names:
Caespitose annual; culms up to 80 cm tall, erect or ascending, branched or unbranched, glabrous at the nodes, with a ring of elongated glands just below the nodes; leaf sheaths usually pilose with tubercle-based hairs, rarely glabrous, with or without glandular pits above; ligule a line of hairs; leaf laminas 4–15 cm × 2–5 mm, linear, flat, thinly pilose or glabrous, eglandular.Panicle 8–25 cm long, lanceolate to ovate, open, the spikelets evenly distributed on pedicels 1–2 mm long, the primary branches (or at least the lowermost) whorled, terminating in a fertile spikelet, glabrous or pilose in the axils, eglandular (rarely with scattered glandular pits).Spikelets 3–5(8) × c. 1 mm, linear-oblong, lightly laterally compressed, 5–12(14)-flowered, the lemmas disarticulating from below upwards, the rhachilla persistent below but fragile above; glumes subequal, 0.6–1.5 mm long, lightly keeled, lanceolate in profile, scaberulous on the keel, subacute at the apex, the inferior reaching to between 1/2 and 2/3 the way along the adjacent lemma, the superior to 1/3 the way; lemmas 1.1–1.5 mm long, lightly keeled, narrowly oblong-elliptic in profile, membranous but with obscure lateral nerves, ± appressed to the rhachilla, those in opposite rows not imbricate, the rhachilla visible between them, grey-green, glabrous or minutely asperulous above, broadly rounded to truncate at the apex; palea persistent, glabrous on the flanks, the keels slender, wingless, minutely scaberulous; anthers 3, 0.6–0.9 mm long.Caryopsis 0.5–0.6 mm long, elliptic
Derivation of specific name:
Habitat: Hot dry country, in short grassland and wooded grassland on sandy soil; also in disturbed ground at roadsides
Altitude range: 300 - 1300 m
Flowering time:
Worldwide distribution: Botswana, Kenya, Mozambique, Namibia, South Africa, Zambia, Zimbabwe
Mozambique distribution: T
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species

Chapano, C. & Mamuto, M. (2003). Plants of the Chimanimani District National Herbarium and Botanic Garden, Zimbabwe Page 24.

Chapano, C. & Mugarisanwa, N.H. (2003). Plants of the Matobo District National Herbarium and Botanic Garden, Zimbabwe Page 15.

Cope, T.A. (1999). Poaceae Flora Zambesiaca 10(2) Page 131.

Heath, A. & Heath, R. (2009). Field Guide to the Plants of Northern Botswana including the Okavango Delta Kew Publishing Page 474. (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 104.

Poilecot, P. (2007). Eragrostis species of Zimbabwe Éditions Quae,Versailles, France Pages 176 - 177. (Includes a picture).

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 137.

Timberlake, J.R. & Childes, S.L. (2004). Biodiversity of the Four Corners Area: Technical Reviews Volume Two (Chapter 5-15) Appendix 5-1: Plant Checklist Occasional Publications in Biodiversity 15 Page 189.

Other sources of information about Eragrostis porosa:

Our websites:

Flora of Botswana: Eragrostis porosa
Flora of Caprivi: Eragrostis porosa
Flora of Zambia: Eragrostis porosa
Flora of Zimbabwe: Eragrostis porosa

External websites:

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

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave 2007-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Mozambique: Species information: Eragrostis porosa., retrieved 12 July 2024

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