- Family: Poaceae Barnhart
- Genus: Avenella Bluff ex Drejer
- Species: Avenella flexuosa (L.) Drejer
Avenella flexuosa subsp. foliosa (Hack.) Veldkamp
- Species: Avenella flexuosa (L.) Drejer
- Genus: Avenella Bluff ex Drejer
[GB]
- Morphology General Habit
- Perennial; caespitose. Culms erect; slender; 15-30 cm long. Culm-internodes elliptical in section; smooth. Leaves distichous. Ligule an eciliate membrane; 4-7 mm long; acute. Leaf-blades filiform; conduplicate; 5-15 cm long; 0.6-1 mm wide; mid-green. Leaf-blade surface scabrous; rough adaxially. Leaf-blade margins smooth. Leaf-blade apex attenuate.
- Morphology Reproductive morphology Inflorescences
- Inflorescence a panicle. Panicle open; ovate; loose; 4-9 cm long; 1-5 cm wide. Primary panicle branches ascending. Panicle branches scaberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.
- Morphology Reproductive morphology Inflorescences Spikelets
- Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate, or oblong; laterally compressed; 3.5-6 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes definite; pubescent. Floret callus pilose.
- Fertile
- Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate, or oblong; laterally compressed; 3.5-6 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes definite; pubescent. Floret callus pilose.
- Morphology Reproductive morphology Inflorescences Bracts Glume
- Glumes persistent; similar; reaching apex of florets; similar to fertile lemma in texture; shiny. Lower glume lanceolate; 1 length of upper glume; membranous; yellow, or purple; 1-keeled; 1 -veined. Lower glume primary vein smooth. Lower glume lateral veins absent. Lower glume apex acute. Upper glume elliptic; 1.5 length of adjacent fertile lemma; membranous; yellow, or purple; 1-keeled; 3 -veined. Upper glume lateral veins prominent. Upper glume apex acute.
- Morphology Reproductive morphology Flowers Florets
- Fertile lemma oblong; 2.5-4 mm long; membranous; shiny; without keel; 4 -veined. Lemma apex dentate; 4 -fid; with outer lobes longer; truncate; awned; 1 -awned. Principal lemma awn dorsal; arising 0.1-0.2 way up back of lemma; straight, or geniculate; 3-7 mm long overall; without a column, or with twisted column. Rhachilla extension 0.5 length of fertile floret; pilose.
- Morphology Reproductive morphology Flowers
- Lodicules 2; membranous. Anthers 3. Ovary glabrous.
- Morphology Reproductive morphology Fruits
- Caryopsis with adherent pericarp. Hilum punctiform.
- Distribution
- Africa: Macaronesia.
- Reference
- Aveneae. Fl Eur 1997.
Native to:
Azores
Avenella flexuosa subsp. foliosa (Hack.) Veldkamp appears in other Kew resources:
Date | Reference | Identified As | Barcode | Type Status |
---|---|---|---|---|
Carreiro, B. S. T. [s.n.], Azores | Deschampsia foliosa | K000345029 | ||
Carreiro, B. S. T. [s.n.], Azores | Deschampsia foliosa | K000345030 |
First published in Pl. Diversity Evol. 131: 250 (2015)
Accepted by
- Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of Trustees of the Royal Botanic Gardens, Kew.
Literature
Kew Backbone Distributions
- Tutin, T.G. & al. (eds.) (1980). Flora Europaea 5: 1-452. Cambridge University Press.
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 Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0
Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0