Brachypodium humbertianum A.Camus

First published in Bull. Soc. Bot. France 102: 121 (1955)
This species is accepted
The native range of this species is Madagascar. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Culms erect; 30-40 cm long. Culm-nodes glabrous. Leaf-sheaths striately veined; pilose. Ligule an eciliate membrane; 1.5 mm long. Leaf-blades 11-15 cm long; 3-4 mm wide. Leaf-blade surface pilose; hairy abaxially. Leaf-blade apex attenuate.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 1; single; bilateral; bearing few fertile spikelets; bearing 3 fertile spikelets on each. Spikelet packing broadside to rhachis; lax. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 5-6 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 30 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 5-6 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 30 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 4.8-5 mm long; 0.66 length of upper glume; membranous; without keels; 5 -veined. Lower glume apex acute. Upper glume lanceolate; 8 mm long; 0.5 length of adjacent fertile lemma; membranous; without keels; 7 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 14 mm long; membranous; without keel; 7 -veined. Lemma apex acute; awned; 1 -awned. Principal lemma awn apical; 7 mm long overall. Apical sterile florets resembling fertile though underdeveloped.
Distribution
Africa: western Indian ocean.
Reference
Brachypodieae. Camus 2007.
[GB]

Sources

  • 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 2022. 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 2022. 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