Poaceae
Enneapogon

Enneapogon pallidus (R.Br.) P.Beauv.

First published in Ess. Agrostogr.: 162 (1812)
This species is accepted
The native range of this species is Lesser Sunda Islands, New Guinea to N. Australia. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Morphology General Habit
Perennial. Culms 30-88 cm long. Lateral branches ample. Ligule a fringe of hairs. Leaf-blades flat, or involute; 1-3 mm wide. Leaf-blade surface pubescent. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle antrorsely scabrous above and retrorsely scabrous above; pubescent above to hirsute above. Panicle contracted, or spiciform; linear, or pyramidal; 5-8 cm long; 1-2.5 cm wide. Primary panicle branches 1-4.5 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 3-6.3 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 3-6.3 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 3-6.3 mm long; 1 length of upper glume; membranous; without keels; 7-9 -veined. Lower glume surface pilose. Lower glume apex entire, or erose; truncate, or obtuse; muticous, or mucronate. Upper glume ovate; 3-6.3 mm long; 1.5-2 length of adjacent fertile lemma; membranous; without keels; 7-9 -veined. Upper glume surface pilose. Upper glume apex entire, or erose; truncate, or obtuse; muticous, or mucronate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma orbicular; 2-3.4 mm long; cartilaginous; without keel; 9 -veined. Lemma lateral veins without ribs, or ribbed. Lemma surface pilose; hairy below; inner surface transversely fringed. Lemma margins ciliate. Lemma apex dentate; 9 -fid; awned; 9 -awned. Principal lemma awn 3-6 mm long overall; 1.5-2 length of lemma; limb plumose; glabrescent towards tip. Lateral lemma awns arising on apex of lobes; subequal to principal; plumose. Palea 1.1 length of lemma; membranous. Palea keels ciliolate; adorned above; with 0.5-0.75 of their length adorned. Palea surface pubescent; hairy on back; hairy all along. Apical sterile florets 2 in number; barren. Apical sterile lemmas awned; 9 -awned. Apical sterile lemma awns ciliate.
Morphology Reproductive morphology Flowers
Lodicules 2. Anthers 3.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ellipsoid, or obovoid; concavo-convex; 1.3-2 mm long. Hilum punctiform.
Distribution
Asia-tropical: Malesia and Papuasia. Australasia: Australia.
Reference
Pappophoreae. Kakudidi.
Diagnostic
Lemma hairs less than base of awns.
[GB]

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]

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 2024. 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 2024. 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