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

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

  • 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 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