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This species is accepted, and its native range is SW. Colombia to Ecuador.
A specimen from Kew's Herbarium

[CPLC]

Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

Distribution
Nativa en Colombia; Alt. 3500 - 4500 m.; Andes.
Morphology General Habit
Hierba
Conservation
No Evaluada

[GB]
Morphology General Habit
Perennial; caespitose; clumped loosely. Basal innovations intravaginal. Culms erect; 6-15 cm long. Leaf-sheaths smooth. Ligule an eciliate membrane; 1 mm long; truncate. Leaf-blades conduplicate; 2-8 cm long; 2-3 mm wide. Leaf-blade midrib indistinct.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle 7-14 cm long. Panicle open; lanceolate; 5-8 cm long; 1-2 cm wide. Panicle axis glabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels glabrous.
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. Rhachilla internodes elongated below proximal fertile floret. Rhachilla elongation 1 mm long. Floret callus pilose. Floret callus hairs 0.5 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. Rhachilla internodes elongated below proximal fertile floret. Rhachilla elongation 1 mm long. Floret callus pilose. Floret callus hairs 0.5 length of lemma.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 4-5 mm long; 1 length of upper glume; membranous; purple (at tip); 1-keeled; 3 -veined. Lower glume apex acute. Upper glume lanceolate; 4-5 mm long; 1.6 length of adjacent fertile lemma; membranous; purple (at tip); 1-keeled; 3 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 2.5-3 mm long; membranous; without keel; 5 -veined. Lemma surface scaberulous. Lemma apex dentate; 4 -fid; awned; 1 -awned. Principal lemma awn dorsal; arising 0.5 way up back of lemma; straight, or curved; 7-9 mm long overall. Palea 2 mm long. Palea keels scaberulous. Rhachilla extension 1.5 mm long; villous; with 2 mm long hairs.
Morphology Reproductive morphology Flowers
Anthers 3; 1 mm long; purple.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ovoid. Endosperm liquid.
Distribution
South America: western South America.
Reference
Aveneae. Escalona 2004.

Native to:

Colombia, Ecuador

Calamagrostis guamanensis Escalona appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Ramsay, P.M.; Merrow-Smith, P.J. [864], Ecuador K001465883

First published in Phytologia 65: 340 (1988)

Accepted by

  • (2019). https://doi.org/10.3897/phytokeys.122.33032 epublication.
  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
  • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181. Missouri Botanical Garden.

Literature

Catálogo de Plantas y Líquenes de Colombia

  • ColPlantA (2021). "ColPlantA. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://www.colplanta.org/"

Kew Backbone Distributions

  • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
  • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181. Missouri Botanical Garden.

Catálogo de Plantas y Líquenes de Colombia
http://creativecommons.org/licenses/by-nc-sa/3.0

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 K001465883

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