Poaceae
Paspalum

Paspalum pectinatum Nees

First published in C.B.Trinius, Sp. Gram. 1: t. 117 (1828)
This species is accepted
The native range of this species is S. Mexico to S. Tropical America. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Distribution
Biogeografic region: Amazonia, Andean, Guiana Shield, Orinoquia. Elevation range: 0–1000 m a.s.l. Native to Colombia. Colombian departments: Arauca, Boyacá, Caquetá, Cauca, Cundinamarca, Guaviare, Meta, Santander, Vichada.
Habit
Herb.
[UPFC]

Morphology General Habit
Perennial; caespitose; clumped densely. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms 30-100 cm long; 1.5-2.5 mm diam. Culm-internodes thin-walled; distally glabrous. Lateral branches lacking. Leaf-sheaths pilose. Leaf-sheath oral hairs ciliate; 4-8 mm long. Ligule an eciliate membrane; 0.5-1 mm long; brown. Leaf-blades revolute; 11-65 cm long; 3-7 mm wide. Leaf-blade midrib prominent beneath. Leaf-blade surface pilose; densely hairy; hairy on both sides.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Peduncle pubescent above. Racemes 2; paired; unilateral; 5-7 cm long. Rhachis broadly winged; membranous; 2-2.5 mm wide; pubescent on margins; terminating in a barren extension; extension flattened. Spikelet packing abaxial; 2 -rowed. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; with cordate base; dorsally compressed; 4.6-5.7 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; with cordate base; dorsally compressed; 4.6-5.7 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume ovate; auriculate at base; 1 length of spikelet; membranous; without keels; winged on margins; winged all along; 3 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; elliptic; 0.9 length of spikelet; membranous; 3 -veined; glabrous, or pilose; with tubercle-based hairs; tuberculate on margins; ciliate on margins; fringed all along; bearing hairs 1.5-2 mm long; acute. Fertile lemma ovate; 3.5-4.5 mm long; coriaceous; pallid; without keel. Lemma margins involute. Lemma apex acute; pubescent. Palea involute; coriaceous.
Morphology Reproductive morphology Flowers
Anthers 3; 2.2 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
North America: Mexico. South America: Mesoamericana, northern South America, western South America, and Brazil.
Reference
Paniceae. Fl Costaric 1993.
[GB]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Bernal, R., G. Galeano, A. Rodríguez, H. Sarmiento y M. Gutiérrez. 2017. Nombres Comunes de las Plantas de Colombia. http://www.biovirtual.unal.edu.co/nombrescomunes/

Vernacular
grama, hoja lanosa, paja de embarre, paja lanosa
[UNAL]

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. 0 - 1000 m.; Amazonia, Andes, Guayana y Serranía de La Macarena, Orinoquia, Valle del Magdalena.
Morphology General Habit
Hierba
Conservation
No Evaluada
[CPLC]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Catálogo de Plantas y Líquenes de Colombia

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

  • GrassBase - The Online World Grass Flora

    • Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). 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 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 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 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Science Photographs

    • Copyright applied to individual images

  • Universidad Nacional de Colombia

    • ColPlantA database
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Useful Plants and Fungi of Colombia

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