Poaceae

Greslania Balansa

First published in Bull. Soc. Bot. France 19: 319 (1872 publ. 1873)
This genus is accepted
The native range of this genus is New Caledonia.

Descriptions

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Morphology General Habit
Perennial. Rhizomes short; pachymorph. Culms erect; 60-200-350 cm long; woody. Culm-internodes terete. Lateral branches lacking, or sparse (1). Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades deciduous at the ligule; lanceolate, or oblong, or ovate (1); coriaceous; stiff. Leaf-blade midrib indistinct (1), or conspicuous (1).
Morphology Reproductive morphology Inflorescences
Synflorescence bractiferous; paniculate; with glumaceous subtending bracts (1), or spathaceous subtending bracts (1), or foliaceous subtending bracts (1); without axillary buds at base of spikelet. Fertile spikelets sessile (1), or pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate (1), or ovate (1); laterally compressed, or subterete (1); 5-6-8 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate (1), or ovate (1); laterally compressed, or subterete (1); 5-6-8 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.6-0.7-0.8 length of upper glume; scarious; without keels; 7-8 -veined (1), or 9 -veined. Lower glume apex truncate (1), or obtuse (1), or acuminate (1), or laterally pinched (1). Upper glume elliptic (1), or oblong (1), or ovate (1); scarious; without keels; 7-9 -veined (1), or 11 -veined (1). Upper glume apex truncate (1), or obtuse (1), or acuminate (1).
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate (1), or oblong (1), or ovate (1); chartaceous (1), or coriaceous; without keel; 5-7 -veined (1), or 9 -veined (1). Lemma apex obtuse, or acute (1); cucullate. Palea 1 length of lemma; coriaceous; 4-5 -veined (1), or 6 -veined. Palea keels approximate.
Morphology Reproductive morphology Flowers
Lodicules 3; glabrous (1), or ciliate (1). Anthers 6. Stigmas 3. Ovary umbonate; glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; oblong (1/1), or ovoid (1/1).
Distribution
Pacific.
[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

    • '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.

  • 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