Andropogon canaliculatus Schumach.

First published in Beskr. Guin. Pl.: 52 (1827)
This species is accepted
The native range of this species is Tropical Africa. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Culms erect; 25-200 cm long. Leaf-sheath oral hairs ciliate. Leaf-sheath auricles absent, or erect; 0-2 mm long. Ligule an eciliate membrane. Leaf-blades 10-40 cm long; 1-5 mm wide.
Morphology Reproductive morphology Inflorescences
Synflorescence simple, or compound; linear. Inflorescence composed of racemes; terminal, or terminal and axillary; subtended by an unspecialized leaf-sheath, or a spatheole. Racemes 2; paired; bilateral (as to sterile spikelets); 3-9 cm long. Rhachis fragile at the nodes; ciliate on margins. Rhachis internodes cuneate, or inflated. Rhachis internode tip transverse; crateriform; with simple rim. Spikelets appressed; in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels cuneate, or inflated; ciliate.
Sterile
Companion sterile spikelets well-developed; male; lanceolate; dorsally compressed; 3.5-6 mm long; as long as fertile. Companion sterile spikelet glumes chartaceous; scaberulous; glabrous; acute; muticous, or mucronate. Companion sterile spikelet lemmas enclosed by glumes.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; laterally compressed; 4-6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; inserted. Companion sterile spikelets well-developed; male; lanceolate; dorsally compressed; 3.5-6 mm long; as long as fertile. Companion sterile spikelet glumes chartaceous; scaberulous; glabrous; acute; muticous, or mucronate. Companion sterile spikelet lemmas enclosed by glumes.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; laterally compressed; 4-6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; inserted.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume linear; 1 length of spikelet; coriaceous; 2-keeled; keeled dorsally. Lower glume surface deeply depressed. Upper glume linear; chartaceous; 1-keeled. Upper glume muticous.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; hyaline; 2 -veined. Fertile lemma oblong; hyaline; without keel. Lemma apex lobed; 2 -fid; incised 0.5 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 7-15 mm long overall; with twisted column. Column of lemma awn glabrous.
Distribution
Africa: west tropical, west-central tropical, northeast tropical, east tropical, and southern tropical.
Reference
Andropogoneae. FTEA.
Diagnostic
Internodes and pedicels twice as wide as gap between them.
[GB]

Gramineae, W. D. Clayton. Flora of West Tropical Africa 3:2. 1972

Morphology General Habit
Tufted perennial up to nearly 2 m. high
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers yellow
Ecology
Swampy soils.
[FWTA]

Gramineae, W. D. Clayton, S. M. Phillips & S. A. Renvoize. Flora of Tropical East Africa. 1974

Morphology General Habit
Tufted perennial; culms 25–200 cm. high, erect.
Morphology Leaves
Leaf-blades narrow, 10–40 cm. long, 1–5 mm. wide; sheath-auricles and ligules up to 2 mm. long, usually hairy at the throat.
Morphology Reproductive morphology Inflorescences
Inflorescence of paired racemes, occasionally terminal but usually up to 8 loosely gathered into a false panicle; racemes 3–9 cm. long, purplish; internodes and pedicels broadly cuneate to inflated, ± twice as wide as the gap between them, sparsely ciliate.
Morphology Reproductive morphology Inflorescences Spikelets
Sessile spikelet 4–6 mm. long, including a short blunt callus; lower glume linear, deeply depressed between the dorsal keels, glabrous; upper glume acute; upper lemma bilobed almost to the middle, with an awn 7–15 mm. long. Pedicelled spikelet narrowly lanceolate, 3.5–6 mm. long, scaberulous on the nerves, glabrous, acute or mucronate (rarely up to 2 mm.).
Sessile
Sessile spikelet 4–6 mm. long, including a short blunt callus; lower glume linear, deeply depressed between the dorsal keels, glabrous; upper glume acute; upper lemma bilobed almost to the middle, with an awn 7–15 mm. long.
Pedicelled
Pedicelled spikelet narrowly lanceolate, 3.5–6 mm. long, scaberulous on the nerves, glabrous, acute or mucronate (rarely up to 2 mm.).
Habitat
Mainly in moist or swampy places; 0–2300 m.
Distribution
K3 K4 K5 K6 K7 T1 T2 T3 T4 T7 T8 U2 U3 U4 westwards to Malia few isolated records to the south
[FTEA]

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]

Gramineae, T. A. Cope. Flora Zambesiaca 10:4. 2002

Diagnostic
Very closely allied to A. perligulatus but differing in the following characters: ligule a fringed membrane c. 0.5 mm long; leaf laminas c. 4 mm wide with some long hairs at the base; pedicels more strongly inflated-clavate; sessile spikelets 4.5–6 mm long; lemma 3.2–4 mm long, bifid to the middle; pedicelled spikelets shorter than the sessile, 4.2–4.5 mm long; anthers 1–2 mm long, dark red.
[FZ]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0
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    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0
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    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Flora of West Tropical Africa

    • Flora of West Tropical Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0
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    • 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
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    • 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 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