Poaceae
Eragrostis

Eragrostis perennis Döll

First published in C.F.P.von Martius & auct. suc. (eds.), Fl. Bras. 2(3): 144 (1878)
This species is accepted
The native range of this species is Bolivia to Brazil and NE. Argentina. It is a perennial and grows primarily in the subtropical biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Morphology General Habit
Perennial; caespitose. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Basal innovations intravaginal. Culms erect; 30-80 cm long; 1-2 -noded. Leaf-sheaths 3-12 cm long; mostly shorter than adjacent culm internode; hirsute. Ligule a fringe of hairs; 0.1 mm long. Leaf-blades flat, or involute; 2-30 cm long; 1-2.9 mm wide. Leaf-blade surface hirsute; hairy on both sides.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; lanceolate; 6-14 cm long; bearing few spikelets. Primary panicle branches 2 cm long. Panicle branches glandular (in axil); glabrous in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 6-12 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 5-7.5 mm long; 1.5-2.5 mm wide; breaking up at maturity; rhachilla deciduous; disarticulating below each fertile floret.
Fertile
Spikelets comprising 6-12 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 5-7.5 mm long; 1.5-2.5 mm wide; breaking up at maturity; rhachilla deciduous; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes deciduous; similar; shorter than spikelet. Lower glume ovate; 1-1.5 mm long; 0.5-0.66 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 2-2.1 mm long; 0.75-1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 2-2.8 mm long; membranous; keeled; 3 -veined. Lemma midvein scaberulous. Lemma lateral veins obscure. Lemma apex acute. Palea keels scabrous; adorned all along. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; cuneate; fleshy. Anthers 3; 1-1.5 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; sulcate on hilar side; 1 mm long.
Distribution
South America: western South America, Brazil, and southern South America.
Reference
Eragrostideae. Boech & Valls 1995.
[GB]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • 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

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • 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 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 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 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0