Eragrostis caesia Stapf

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Synonyms: Eragrostis dieterlenii Hack.
Common names:
Frequency:
Status:
Description:
Densely caespitose perennial without rhizomes or stolons; culms up to 60 cm tall, erect, unbranched, glabrous at the nodes, eglandular; basal leaf sheaths glabrous, chartaceous, compressed and keeled, eglandular, persistent; ligule a line of hairs; leaf laminas 11–20 cm × 1.5–3 mm, linear and flat or more usually involute, filiform and flexuous, glabrous or pilose, eglandular.Panicle 8–15 cm long, linear to narrowly oblong with the branches appressed to the main axis (rarely somewhat spreading), the spikelets evenly distributed on pedicels 0.5–2 mm long, the primary branches not in whorls, terminating in a fertile spikelet, glabrous in the axils, eglandular.Spikelets 4–7 × 1.5–2(2.4) mm, narrowly oblong, laterally compressed, (2)4–7-flowered, the florets tardily disarticulating from below upwards, the rhachilla persistent; glumes unequal, keeled, narrowly oblong-lanceolate in profile, glabrous, subacute at the apex, the inferior 0.8–1.6 mm long, reaching to between (1/4)1/3 and c. 1/2 the way along the adjacent lemma, the superior 1.4–2.2 mm long, reaching nearly to the middle of the adjacent lemma; lemmas 2.7–3 mm long, keeled, oblong-lanceolate in profile, membranous with distinct lateral nerves, ± appressed to the rhachilla, those in opposite rows not imbricate, the rhachilla visible between them, pale olive-green to dark leaden-grey, scaberulous on the keel and on the back above, with conspicuous dark oil glands along the lateral nerves, acute or acuminate and sometimes mucronate at the apex; palea deciduous with the lemma, glabrous on the flanks, the keels slender, wingless, puberulous; anthers 3, 1–1.4 mm long.Caryopsis not seen.
Notes:
Derivation of specific name: caesia: bluish-grey
Habitat: Montane short grassland
Altitude range: (metres) 2000 m (approx)
Flowering time:
Worldwide distribution: Lesotho, South Africa, Swaziland, 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
Literature:

Cope, T.A. (1999). Poaceae Flora Zambesiaca 10(2) Page 116.

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 103.

Poilecot, P. (2007). Eragrostis species of Zimbabwe Éditions Quae,Versailles, France Pages 142 - 143. (Includes a picture).


Other sources of information about Eragrostis caesia:

External websites:

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


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-21

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2021). Flora of Zimbabwe: Species information: Eragrostis caesia.
https://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=104720, retrieved 19 September 2021

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