- Family: Poaceae Barnhart
- Genus: Calamagrostis Adans.
Calamagrostis erectifolia Hitchc.
- Genus: Calamagrostis Adans.
[GB]
- Morphology General Habit
- Perennial; caespitose; clumped densely. Culms 100-150 cm long. Culm-internodes antrorsely scabrous. Leaf-sheaths smooth, or scaberulous. Ligule an eciliate membrane; 2-3 mm long. Leaf-blades erect; involute; 50-75 cm long; 1 mm wide; stiff. Leaf-blade surface scabrous.
- Morphology Reproductive morphology Inflorescences
- Inflorescence a panicle. Panicle open; pyramidal; 15-29 cm long. Primary panicle branches spreading, or drooping; whorled at most nodes; 5-10 cm long. Panicle axis with lower internodes 3-5 cm long; scabrous. Panicle branches capillary; flexuous; scabrous. Spikelets solitary. Fertile spikelets pedicelled.
- Morphology Reproductive morphology Inflorescences Spikelets
- Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 1 mm long; 0.25 length of lemma.
- Fertile
- Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 1 mm long; 0.25 length of lemma.
- Morphology Reproductive morphology Inflorescences Bracts Glume
- Glumes persistent; similar; reaching apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 4-5 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 4-5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume apex acute.
- Morphology Reproductive morphology Flowers Florets
- Fertile lemma lanceolate; 4 mm long; membranous; without keel; 5 -veined. Lemma surface smooth, or asperulous. Lemma apex muticous. Rhachilla extension 2-3 mm long; pilose.
- Morphology Reproductive morphology Flowers
- Anthers 3.
- Morphology Reproductive morphology Fruits
- Caryopsis with adherent pericarp.
- Distribution
- North America: Mexico.
- Reference
- Aveneae. Hitchcock 2004.
Native to:
Mexico Central, Mexico Southwest
Calamagrostis erectifolia Hitchc. appears in other Kew resources:
| Date | Reference | Identified As | Barcode | Type Status |
|---|---|---|---|---|
| Hinton, G.B. [4622], México State | K000465746 | |||
| Hinton, G.B. [4622], México State | K000465747 |
First published in N.L.Britton & al. (eds.), N. Amer. Fl. 17: 507 (1937)
Accepted by
- Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
- Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
Literature
Kew Backbone Distributions
- Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
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 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