Eragrostis membranacea Hack. ex Schinz

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Synonyms:
Common names:
Frequency:
Status:
Description:
Caespitose annual; culms up to 110 cm tall, erect or ascending, usually branched, glabrous at the nodes, eglandular; leaf sheaths glabrous, with or without scattered subcircular glandular spots; ligule a line of hairs; leaf laminas 4–40 cm × 1.5–5 mm, linear, flat or involute, glabrous, eglandular.Panicle 5–19 cm long, ovate, open, the spikelets evenly distributed on pedicels 3.5–10 mm long, the lower primary branches in 1 or 2 whorls or subwhorls, the remainder not so, terminating in a fertile spikelet, glabrous or thinly long-pilose in the axils, the pedicels with a glandular ring.Spikelets 3–15 × 1.9–4 mm, oblong or narrowly oblong, laterally compressed, 8–14-flowered, the florets disarticulating from below upwards, the rhachilla persistent; glumes unequal, keeled, narrowly ovate in profile, glabrous, obtuse at the apex, the inferior 1.1–1.4 mm long, reaching to about the middle of the adjacent lemma, the superior 1.4–1.9 mm long, reaching to about 1/4 the way along the adjacent lemma; lemmas 2–2.6 mm long, keeled, broadly ovate in profile, firmly membranous with inconspicuous lateral nerves, diverging from the rhachilla at c. 45°, those in opposite rows not imbricate, the rhachilla visible between them, greyish-green, tinged or suffused with purple except for the whitish narrowly hyaline margins, granular on the surface, obtuse at the apex; palea deciduous soon after the lemma, glabrous on the flanks, the keels slender, wingless, glabrous or scaberulous; anthers 3, 0.8–1.2 mm long.Caryopsis 1–1.2 mm long, elliptic.
Type location:
Notes: Caespitose annual
Derivation of specific name:
Habitat: Sandy river banks and lake shores, and in pans in mopane woodland
Altitude range: 500 - 1000 m
Flowering time:
Worldwide distribution: Botswana, Namibia, Zambia, Zimbabwe
Zambian distribution (Flora Zambesiaca): S
Zambian distribution (Provinces): S
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Literature:

Cope, T.A. (1999). Poaceae Flora Zambesiaca 10(2) Page 105.

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 118 - 119. (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 membranacea:

Our websites:

Flora of Botswana: Eragrostis membranacea
Flora of Caprivi: Eragrostis membranacea
Flora of Zimbabwe: Eragrostis membranacea

External websites:

African Plants: A Photo Guide (Senckenberg): Eragrostis membranacea
African Plant Database: Eragrostis membranacea
BHL (Biodiversity Heritage Library): Eragrostis membranacea
EOL (Encyclopedia of Life): Eragrostis membranacea
ePIC (electronic Plant Information Center): Eragrostis membranacea
Flora Zambesiaca web site: Eragrostis membranacea
GBIF (Global Biodiversity Information Facility): Eragrostis membranacea
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Eragrostis membranacea
iNaturalist: Eragrostis membranacea
IPNI (International Plant Names Index): Eragrostis membranacea
JSTOR Plant Science: Eragrostis membranacea
Kew Herbarium catalogue: Eragrostis membranacea
Kew Monocotyledon checklist: Eragrostis membranacea
Mansfeld World Database of Agricultural and Horticultural Crops: Eragrostis membranacea
Plants of the World Online: Eragrostis membranacea
Tropicos: Eragrostis membranacea
Wikipedia: Eragrostis membranacea


Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-21

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2021). Flora of Zambia: Species information: Eragrostis membranacea.
https://www.zambiaflora.com/speciesdata/species.php?species_id=105010, retrieved 16 October 2021

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