Brachypodium arbuscula Gay ex Knoche

First published in Vagandi Mos.: 272 (1923)
This species is accepted
The native range of this species is Canary Islands. It is a perennial and grows primarily in the subtropical biome.

Descriptions

Morphology General Habit
Perennial. Culms geniculately ascending; 30-40 cm long; wiry. Lateral branches ample. Ligule an eciliate membrane. Leaf-blades 4-8 cm long; 3-5 mm wide. Leaf-blade apex attenuate.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 1; single; erect; bilateral; 3-5 cm long; bearing few fertile spikelets; bearing 3-15 fertile spikelets on each. Spikelet packing broadside to rhachis; crowded; 2 -rowed. Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels oblong; 1-1.5 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 8-15 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 13-25 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 8-15 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 13-25 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 ovate; 6-7 mm long; 0.75 length of upper glume; membranous; without keels; 5 -veined. Lower glume surface glabrous, or puberulous. Lower glume apex acute. Upper glume ovate; 8-9 mm long; 1.1-1.3 length of adjacent fertile lemma; membranous; without keels; 7-9 -veined. Upper glume surface glabrous, or puberulous. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 6-8 mm long; without keel; 7 -veined. Lemma surface glabrous, or puberulous. Lemma apex acute; awned; 1 -awned. Principal lemma awn apical; 1 mm long overall. Palea 1 length of lemma. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3. Ovary with a fleshy appendage below style insertion; pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; hairy at apex; apex fleshy. Hilum linear.
Distribution
Africa: Macaronesia.
Reference
Brachypodieae. WDC 1997.
[GB]

Sources

  • GrassBase - The Online World Grass Flora

    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Herbarium Catalogue Specimens

    • 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 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