Poaceae

Oryzidium C.E.Hubbard & Schweick.

First published in Bull. Misc. Inform. Kew 1936: 326 (1936)
This genus is accepted
The native range of this genus is S. Tropical Africa to Namibia.

Descriptions

nonem

Morphology General Habit
Perennial. Culms decumbent; 80-150 cm long; spongy; rooting from lower nodes. Ligule a fringe of hairs.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 8-10 mm long; falling entire; deciduous with the pedicel. Rhachilla internodes elongated below proximal fertile floret. Rhachilla elongation slender.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 8-10 mm long; falling entire; deciduous with the pedicel. Rhachilla internodes elongated below proximal fertile floret. Rhachilla elongation slender.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate, or oblate; membranous; without keels; 0-3 -veined. Lower glume apex obtuse, or acute. Upper glume elliptic; chartaceous; without keels; 7 -veined. Upper glume lateral veins ribbed. Upper glume surface scabrous. Upper glume apex attenuate; awned; 1 -awned.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets male; with palea. Lemma of lower sterile floret lanceolate; chartaceous; 5 -veined; acuminate. Fertile lemma elliptic; coriaceous; without keel; 7 -veined. Lemma margins involute. Lemma apex acuminate. Palea coriaceous.
Morphology Reproductive morphology Flowers
Lodicules 2; fleshy.
Distribution
Africa.
[GB]

Gramineae, W. D. Clayton. Flora Zambesiaca 10:3. 1989

Morphology Reproductive morphology Inflorescences
Inflorescence a panicle.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets lanceolate, falling with pedicel attached.
Morphology Reproductive morphology Inflorescences Bracts Glume
Inferior glume small, the superior as long as spikelet and stiffly awned.
Morphology Reproductive morphology Inflorescences Bracts Lemma
Inferior lemma acuminate, separated from superior floret by an internode c. 1.5 mm. long. Superior lemma softly coriaceous.
[FZ]

Sources

  • Flora Zambesiaca

    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • 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

  • 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