Poaceae
Eragrostis

Eragrostis maypurensis (Kunth) Steud.

First published in Syn. Pl. Glumac. 1: 276 (1854)
This species is accepted
The native range of this species is Mexico to S. Tropical America. It is an annual and grows primarily in the seasonally dry tropical biome. It is used for food.

Descriptions

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]

Morphology General Habit
Annual. Culms erect, or geniculately ascending, or decumbent; 15-70 cm long; 0.5-1 mm diam. Culm-internodes distally glabrous. Culm-nodes glabrous. Lateral branches lacking, or sparse. Leaf-sheaths glabrous on surface to pilose. Leaf-sheath oral hairs ciliate; 2-4 mm long. Ligule a fringe of hairs; 0.2-0.3 mm long. Leaf-blades 4-15 cm long; 2-4 mm wide. Leaf-blade surface glabrous, or pilose; hairy adaxially, or on both sides; with tubercle-based hairs.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle 7-15 cm long; glabrous, or pilose above. Panicle open; pyramidal; dense; 4-20 cm long. Primary panicle branches 1 -nate; simple, or sparsely divided; 2-4.5 cm long; bearing spikelets almost to the base. Panicle branches glabrous to pilose; bearded in axils. Spikelets solitary. Fertile spikelets sessile, or pedicelled. Pedicels reduced to a stump; 0.2-0.5 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 10-27 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 7-12 mm long; breaking up at maturity; rhachilla persistent; retaining paleas; fragile above; with the distal florets falling as a whole.
Fertile
Spikelets comprising 10-27 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 7-12 mm long; breaking up at maturity; rhachilla persistent; retaining paleas; fragile above; with the distal florets falling as a whole.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes deciduous; similar; shorter than spikelet. Lower glume ovate; 1.5-2.5 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 acuminate. Upper glume ovate; 1.7-2.5 mm long; 0.9 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 1.9-2.7 mm long; membranous; keeled; 3 -veined. Lemma midvein scabrous. Lemma lateral veins prominent. Lemma apex caudate. Palea bowed outwards; 0.66 length of lemma. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; cuneate; fleshy. Anthers 2; 0.2 mm long; purple.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; oblong; 0.5 mm long; red.
Distribution
North America: Mexico. South America: Mesoamericana, northern South America, western South America, and Brazil.
Reference
Eragrostideae. Fl Costa Rica 1994.
[GB]

Distribution
Biogeografic region: Amazonia, Andean, Guiana Shield, Orinoquia, Pacific. Elevation range: 0–1500 m a.s.l. Native to Colombia. Colombian departments: Amazonas, Antioquia, Arauca, Boyacá, Casanare, Cauca, Guainía, Guaviare, Huila, Magdalena, Meta, Nariño, Santander, Tolima, Valle del Cauca, Vichada.
Habit
Herb.
Conservation
National Red List of Colombia (2021): Potential LC.
Ecology
Habitat according IUCN Habitats Classification: forest and woodland, savanna, shrubland, native grassland, wetlands (inland), artificial - terrestrial.
[UPFC]

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 - 1500 m.; Amazonia, Andes, Guayana y Serranía de La Macarena, Orinoquia, Pacífico, Sierra Nevada de Santa Marta, Valle del Cauca, Valle del Magdalena.
Morphology General Habit
Hierba
Conservation
No Evaluada
[CPLC]

Uses

Use Food
Used for food.
[UPFC]

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

  • Colombian resources for Plants made Accessible

    • ColPlantA 2021. Published on the Internet at http://colplanta.org
    • https://creativecommons.org/licenses/by/4.0/

  • 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 2026. 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 2026. 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

  • Useful Plants and Fungi of Colombia

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