Eragrostis fimbrillata Cope

First published in Kew Bull. 53: 146 (1998)
This species is accepted
The native range of this species is Zambia. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Morphology General Habit
Perennial. Butt sheaths glabrous; persistent and investing base of culm; with compacted dead sheaths. Culms erect; 15-35 cm long. Culm-internodes eglandular. Lateral branches lacking. Leaf-sheaths longer than adjacent culm internode; eglandular; without keel; glabrous on surface. Ligule a fringe of hairs. Leaf-blades filiform; involute; 7-13 cm long; 0.5 mm wide; eglandular. Leaf-blade surface glabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; elliptic, or oblong; 7-12 cm long. Panicle branches eglandular; glabrous in axils; with insignificant pulvini. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; 3-12 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 9-12 fertile florets; with diminished florets at the apex. Spikelets elliptic, or oblong; laterally compressed; 4.5-7.5 mm long; 2.5-2.8 mm wide; breaking up at maturity; rhachilla persistent; retaining paleas. Rhachilla internodes eventually visible between lemmas.
Fertile
Spikelets comprising 9-12 fertile florets; with diminished florets at the apex. Spikelets elliptic, or oblong; laterally compressed; 4.5-7.5 mm long; 2.5-2.8 mm wide; breaking up at maturity; rhachilla persistent; retaining paleas. Rhachilla internodes eventually visible between lemmas.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes similar; shorter than spikelet. Lower glume ovate; 1.3-1.7 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume apex acute. Upper glume lanceolate; 1.3-1.7 mm long; 0.5-0.66 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume surface asperulous. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile florets divergent. Fertile lemma elliptic, or oblong; 2-2.3 mm long; membranous; purple, or pallid and purple; tipped with last colour; keeled; 3 -veined. Lemma lateral veins distinct. Lemma surface scaberulous; rough above. Lemma apex obtuse; pubescent. Palea 2 -veined. Palea keels scabrous. Palea apex ciliate. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; cuneate; fleshy. Anthers 3; 1.2-1.7 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Africa: southern tropical.
Reference
Eragrostideae. Cope 1996.
[GB]

Gramineae, T. Cope. Flora Zambesiaca 10:2. 1999

Morphology General Habit
Caespitose perennial without rhizomes or stolons; culms up to 35 cm tall, erect, unbranched, eglandular, the nodes not exposed; basal leaf sheaths glabrous, chartaceous, terete, eglandular, persistent; ligule a line of hairs; leaf laminas up to 13 cm long and 0.5 mm in diameter, tightly involute and setaceous, ciliate or pilose at the extreme base, otherwise glabrous, eglandular.
Morphology Reproductive morphology Inflorescences
Panicle 7–12 cm long, narrowly oblong-elliptic, loose and open, the spikelets evenly distributed on filiform pedicels 3–12 mm long, the primary branches not in whorls, terminating in a fertile spikelet, glabrous in the axils, eglandular.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets 4.5–7.5 × 2.5–2.8 mm, oblong-elliptic, laterally compressed, 9–12-flowered, the florets disarticulating from the apex downwards, the rhachilla fragile; glumes subequal, 1.3–1.7 mm long, reaching from 1/2 to 2/3 the way along the adjacent lemmas, keeled, narrowly lanceolate in profile, thinly scaberulous especially above, subacute at the apex; lemmas 2–2.3 mm long, keeled, narrowly oblong-elliptic in profile, membranous with distinct lateral nerves, diverging from the rhachilla at less than 45°, those in opposite rows not imbricate, the rhachilla visible between them, pallid with purple apex to purple throughout, scaberulous above, minutely fimbriate at the obtuse apex; palea glabrous on the flanks, fimbriate at the apex, the keels slender, wingless, scabrid; anthers 3, 1.2–1.7 mm long.
Morphology Reproductive morphology Fruits
Caryopsis not seen.
[FZ]

Sources

  • Flora Zambesiaca

    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • GrassBase - The Online World Grass Flora

    • Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora.
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0