Poaceae
Setaria

Setaria perrieri A.Camus

First published in Bull. Soc. Bot. France 74: 632 (1927 publ. 1928)
This species is accepted
The native range of this species is Madagascar. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Morphology General Habit
Perennial. Culms erect; 30-60 cm long. Leaf-sheaths hirsute; outer margin hairy. Ligule absent. Leaf-blades 25-35 cm long; 4-6 mm wide. Leaf-blade surface pilose; hairy adaxially, or on both sides. Leaf-blade margins scaberulous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle pilose above. Panicle open; lanceolate; 12-15 cm long; contracted about primary branches. Primary panicle branches appressed; 1-3 cm long; bearing spikelets almost to the base; sterile at the tips. Panicle axis angular; pilose. Panicle branches pilose. Spikelets subtended by an involucre. Fertile spikelets pedicelled; 1 in the cluster. Involucre composed of bristles; 8-10 mm long. Involucral bristles persistent; 1-3 per spikelet; flexible; antrorsely scaberulous; glabrous. Pedicels oblong.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 3 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 3 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 1.2-1.3 mm long; 0.4 length of spikelet; membranous; without keels; 3 -veined. Lower glume apex acute. Upper glume ovate; 2 mm long; 0.66 length of spikelet; membranous; without keels; 5 -veined. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets male; with palea. Lemma of lower sterile floret ovate; 1 length of spikelet; membranous; 5 -veined; obtuse. Palea of lower sterile floret 0.66 length of lemma. Fertile lemma lanceolate; dorsally compressed; gibbous; 3 mm long; indurate; without keel. Lemma surface smooth. Lemma margins involute. Lemma apex obtuse. Palea involute; indurate.
Morphology Reproductive morphology Flowers
Anthers 1.8 mm long.
Distribution
Africa: western Indian ocean.
Reference
Paniceae. Camus 1994.
[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: threatened. Confidence: confident
[AERP]

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