Poaceae
Lasiacis

Lasiacis divaricata (L.) Hitchc.

First published in Contr. U.S. Natl. Herb. 15: 16 (1910)
This species is accepted
The native range of this species is Tropical & Subtropical America. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Culms rambling; zigzag; 100-500 cm long; 5-9 mm diam.; woody. Culm-internodes thin-walled; distally glabrous, or with pubescent line. Culm-nodes glabrous. Leaf-sheaths glabrous on surface to pubescent; outer margin hairy. Leaf-sheath oral hairs ciliate; 0.3-3 mm long. Ligule an eciliate membrane, or a ciliolate membrane; 0.2-0.6 mm long. Collar pubescent. Leaf-blade base asymmetrical. Leaf-blades persistent, or deciduous at the ligule (lower blades); linear, or lanceolate; (3-)5-12(-16) cm long; (3-)6-14(-20) mm wide. Leaf-blade surface glabrous. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; 2-12(-20) cm long. Primary panicle branches reflexed; 2-8(-12) cm long. Panicle branches bearing distant spikelets; scabrous; pubescent in axils. Spikelets spreading; solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; tilted on the pedicel; dorsally compressed; 3.5-4.5 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; tilted on the pedicel; dorsally compressed; 3.5-4.5 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets; thinner than fertile lemma; shiny. Lower glume oblate; 1.4-2 mm long; 0.4-0.5 length of spikelet; membranous; black; without keels; 7-11 -veined. Lower glume surface woolly; hairy at apex. Lower glume apex obtuse. Upper glume ovate; 1 length of adjacent fertile lemma; membranous; black; without keels; 9-11 -veined. Upper glume surface woolly; hairy at apex. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 9-13 -veined; woolly; hairy at apex; obtuse. Palea of lower sterile floret 0.5 length of lemma. Fertile lemma ovate; dorsally compressed; 3.4-4 mm long; indurate; pallid, or light brown; shiny; without keel. Lemma margins involute. Lemma apex obtuse; with a shallow excavation and woolly. Palea indurate. Palea apex pubescent.
Morphology Reproductive morphology Flowers
Anthers 3; 2 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; 2.2-2.4 mm long; pallid.
Distribution
North America: southeast USA and Mexico. South America: Mesoamericana, Caribbean, northern South America, western South America, Brazil, and southern South America.
Reference
Paniceae. Davidse.
[GB]

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
canutillo, carrizo
[UNAL]

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]

George R. Proctor (2012). Flora of the Cayman Isands (Second Edition). Royal Botanic Gardens, Kew

Morphology General Habit
Woody perennial climber, usually glabrous throughout (except margins of sheaths); culms much-branched, reaching 3 m or more in length; leaf-blades narrowly lanceolate, 5–12 cm long, 5–15 mm broad, with scabrous margins; ligule inconspicuous, ciliate
Morphology Reproductive morphology Inflorescences
Panicles terminating the main culm and fertile branches, 5–20 cm long, loosely flowered; spikelets ovoid, ca. 4 mm long.
Distribution
Grand Cayman, Little Cayman, Cayman Brac. Florida, West Indies, C. and S. America.
Ecology
Common in thickets and woodlands at low to middle elevations.
[Cayman]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/44393464/44488384

Conservation
LC - least concern
[IUCN]

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 - 2000 m.; Amazonia, Andes, Guayana y Serranía de La Macarena, Llanura del Caribe, Orinoquia, Pacífico, Sierra Nevada de Santa Marta, Valle del Cauca, Valle del Magdalena.
Morphology General Habit
Hierba
Conservation
Preocupación Menor
[CPLC]

Distribution
Biogeografic region: Amazonia, Andean, Guiana Shield, Caribbean, Orinoquia, Pacific. Elevation range: 0–2000 m a.s.l. Native to Colombia. Colombian departments: Antioquia, Cauca, Chocó, Cundinamarca, Guaviare, Huila, Magdalena, Meta, Nariño, Putumayo, Risaralda, Tolima, Valle del Cauca.
Habit
Herb.
Conservation
IUCN Red List Assessment (2021): LC. National Red List of Colombia (2021): Potential LC.
[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

  • Flora of the Cayman Islands

    • Flora of the Cayman Islands
    • 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/

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/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