Poaceae
Sporobolus

Sporobolus reflexus Boechat & Longhi-Wagner

First published in Iheringia, Bot. 44: 38 (1994)
This species is accepted
The native range of this species is Central Brazil. It is a perennial and grows primarily in the seasonally dry tropical biome.

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: threatened. Confidence: low confidence
[AERP]

Morphology General Habit
Perennial; caespitose. Basal innovations intravaginal. Culms erect; 20-80 cm long; 2-3 -noded. Leaf-sheaths mostly shorter than adjacent culm internode; glabrous on surface. Ligule a fringe of hairs; 0.2-0.5 mm long. Leaf-blades involute; 4.8-30 cm long; 1-4 mm wide. Leaf-blade margins scabrous; glabrous, or ciliate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle 9-43 cm long. Panicle open; pyramidal; 6-16 cm long; 2-6 cm wide. Primary panicle branches reflexed; whorled at most nodes; 0.3-4 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; subterete; 2.5-5 mm long; 0.8-1.8 mm wide; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; subterete; 2.5-5 mm long; 0.8-1.8 mm wide; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes deciduous; reaching apex of florets. Lower glume lanceolate; 1.2-1.5 mm long; 0.33-0.5 length of upper glume; hyaline; without keels; 0-1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2.2-3 mm long; 1 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 2.2-4.5 mm long; 0.5-0.7 mm wide; membranous; without keel; 1 -veined. Lemma apex acute. Palea readily splitting down midline; 2.3-4.3 mm long; 2 -veined. Palea keels approximate.
Morphology Reproductive morphology Flowers
Anthers 3; 1.7-2.5 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with free soft pericarp; oblong; 1.8-2.2 mm long; light brown; rugose. Embryo 0.25-0.5 length of caryopsis.
Distribution
South America: Brazil.
Reference
Eragrostideae. Boechat & Longhi-Wag 2002.
[GB]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://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

  • 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