Poaceae
Eragrostis

Eragrostis deflexa Hitchc.

First published in Mem. Bernice Pauahi Bishop Mus. 8: 131 (1922)
This species is accepted
The native range of this species is Hawaiian Islands (Lanai, Hawaii). It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Culms erect; 40-100 cm long. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs. Leaf-blades flat, or involute; 10-30 cm long; 2-4 mm wide. Leaf-blade surface scabrous; rough adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; oblong; 20-40 cm long; 6-15 cm wide. Primary panicle branches spreading, or reflexed; whorled at most nodes. Panicle axis scabrous. Panicle branches bearded in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels flexuous; 2-4 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 4-7 fertile florets; with diminished florets at the apex. Spikelets linear, or oblong; laterally compressed; 5-8 mm long; breaking up at maturity; rhachilla persistent; retaining paleas. Rhachilla internodes eventually visible between lemmas.
Fertile
Spikelets comprising 4-7 fertile florets; with diminished florets at the apex. Spikelets linear, or oblong; laterally compressed; 5-8 mm long; breaking up at maturity; rhachilla persistent; retaining paleas. Rhachilla internodes eventually visible between lemmas.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes deciduous; similar; shorter than spikelet. Lower glume lanceolate; 2.5-3 mm long; 1 length of upper glume; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 2.5-3 mm long; 0.8-1 length of adjacent fertile lemma; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 2.5 mm long; chartaceous; keeled; 3 -veined. Lemma midvein scaberulous. Lemma lateral veins obscure. Lemma surface scaberulous; rough above. Lemma apex acute. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Pacific: north-central.
Reference
Eragrostideae. Hitchcock 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

  • 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