Poaceae
Sporobolus

Sporobolus camporum Swallen

First published in Sellowia 7: 10 (1956)
This species is accepted
The native range of this species is SE. & S. Brazil to NE. Argentina. 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: not threatened. Confidence: low confidence
[AERP]

Morphology General Habit
Perennial; caespitose. Culms erect; 50-100 cm long. Leaf-sheaths smooth; glabrous on surface. Ligule a fringe of hairs. Leaf-blades involute; 10-30 cm long; 2-4 mm wide. Leaf-blade surface glabrous. Leaf-blade margins scabrous; ciliate; hairy at base.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; lanceolate; 20-26 cm long; contracted about primary branches. Primary panicle branches ascending; whorled at most nodes; 3-7 cm long. Panicle branches capillary. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.5-1 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; subterete; 2.5-4 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; subterete; 2.5-4 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes deciduous; reaching apex of florets. Lower glume elliptic; 0.33-0.5 length of upper glume; membranous; purple; without keels. Lower glume apex acute. Upper glume oblong; 2.5-4 mm long; 1 length of adjacent fertile lemma; membranous; purple; without keels. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic; 2.5-4 mm long; membranous; purple; without keel; 1 -veined. Lemma apex acute. Palea 2 -veined. Palea keels approximate.
Morphology Reproductive morphology Flowers
Anthers 2; 2 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with free soft pericarp; 2 mm long.
Distribution
South America: Brazil.
Reference
Eragrostideae. Swallen 2000.
[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

  • 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