Poaceae
Eragrostis

Eragrostis scabriflora Swallen

First published in J. Washington Acad. Sci. 26: 179 (1936)
This species is accepted
The native range of this species is Pacific. It is a perennial and grows primarily in the wet tropical 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]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/44393547/44443335

Conservation
LC - least concern
[IUCN]

Morphology General Habit
Perennial; caespitose. Culms erect; 20-60 cm long; wiry. Lateral branches lacking, or sparse; arising from mid culm. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs; 0.3 mm long. Leaf-blades flat, or conduplicate; 5-15 cm long; 1-2 mm wide. Leaf-blade surface scabrous; rough adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; terminal and axillary. Panicle open; lanceolate; 3-15 cm long; contracted about primary branches. Primary panicle branches appressed; 1 -nate; simple; 1-2 cm long; bearing spikelets almost to the base. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1-2 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 6-18 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4-8 mm long; breaking up at maturity; rhachilla persistent; retaining paleas; fragile above.
Fertile
Spikelets comprising 6-18 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 4-8 mm long; breaking up at maturity; rhachilla persistent; retaining paleas; fragile above.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes deciduous; similar; shorter than spikelet. Lower glume ovate; 1.5 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1.5 mm long; 0.75 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 mm long; membranous; keeled; 3 -veined. Lemma surface scaberulous. Lemma apex acute. Palea keels ciliolate; adorned above. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Pacific: southwestern, south-central, and northwestern.
Reference
Eragrostideae. Swallen 1993.
[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

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

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2026. 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 2026. 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