Poaceae
Bothriochloa

Bothriochloa compressa (Hook.f.) Henrard

First published in Blumea 3: 456 (1940)
This species is accepted
The native range of this species is W. India. 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: confident
[AERP]

Morphology General Habit
Perennial. Culms erect; robust; 90-120 cm long. Culm-nodes glabrous. Lateral branches sparse. Leaf-sheaths longer than adjacent culm internode; keeled. Ligule an eciliate membrane; 4.5 mm long. Leaf-blades linear, or lanceolate; 30-45 cm long; 6-10 mm wide; aromatic. Leaf-blade surface scaberulous; rough on both sides; glabrous; hairless except near base. Leaf-blade margins scaberulous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes numerous; digitate; 2.5-5 cm long. Central inflorescence axis 1-3 cm long. Rhachis fragile at the nodes; flattened; villous on margins. Rhachis internodes linear; 2.5 mm long. Rhachis internode tip transverse. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear; flattened; 3 mm long; with a translucent median line (also present in internodes); villous.
Morphology Reproductive morphology Inflorescences Spikelets
Companion sterile spikelets well-developed; containing empty lemmas; elliptic; 5 mm long; as long as fertile. Companion sterile spikelet glumes 9-11 -veined. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus bearded; base obtuse; attached transversely.
Sterile
Companion sterile spikelets well-developed; containing empty lemmas; elliptic; 5 mm long; as long as fertile. Companion sterile spikelet glumes 9-11 -veined.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus bearded; base obtuse; attached transversely.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; cartilaginous; without keels; keel-less except near apex; 5-7 -veined. Lower glume surface flat; villous; hairy below. Lower glume apex emarginate, or truncate. Upper glume lanceolate; 1 length of spikelet; 1-keeled. Upper glume apex acute; mucronate.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; 4 mm long; hyaline; 0 -veined; without midvein; without lateral veins; obtuse. Fertile lemma linear; hyaline; without keel. Lemma apex entire; awned; 1 -awned. Principal lemma awn apical; geniculate; 14-16 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
Morphology Reproductive morphology Flowers
Anthers 3.
Distribution
Asia-tropical: India.
Reference
Andropogoneae. Blatt & McCann 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]

Morphology General Habit
Perennial; caespitose. Culms robust; 30-80 cm long. Culm-internodes elliptical in section. Culm-nodes glabrous. Leaves distichous. Leaf-sheaths longer than adjacent culm internode; smooth. Ligule an eciliate membrane. Leaf-blades lanceolate; 20-25 cm long; 8-13 mm wide. Leaf-blade venation distinct. Leaf-blade surface scaberulous; rough on both sides; glabrous, or puberulous. Leaf-blade apex acuminate; hardened.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 8-15; digitate; 3-5 cm long. Central inflorescence axis 2-4 cm long. Rhachis fragile at the nodes; flattened; ciliate on margins. Rhachis internodes linear; 2.5 mm long. Rhachis internode tip transverse. Raceme-bases filiform; 4-6 mm long. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear; flattened; 2.5 mm long; with a translucent median line (also present in internodes); ciliate.
Morphology Reproductive morphology Inflorescences Spikelets
Companion sterile spikelets well-developed; containing empty lemmas; elliptic; 2.5-5 mm long; as long as fertile. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2.5-5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus bearded; base obtuse; attached transversely. Spikelet callus hairs 1.5-2 mm long.
Sterile
Companion sterile spikelets well-developed; containing empty lemmas; elliptic; 2.5-5 mm long; as long as fertile.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2.5-5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus bearded; base obtuse; attached transversely. Spikelet callus hairs 1.5-2 mm long.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma; shiny. Lower glume elliptic; 1 length of spikelet; cartilaginous; without keels; keel-less except near apex; 5-7 -veined. Lower glume surface flat. Lower glume apex emarginate, or truncate. Upper glume lanceolate; 1 length of spikelet; 1-keeled. Upper glume apex acute; mucronate.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 3-4 mm long; hyaline; acute. Fertile lemma linear; 1.5 mm long; hyaline; without keel. Lemma apex entire; awned; 1 -awned. Principal lemma awn apical; geniculate; 22 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
Morphology Reproductive morphology Flowers
Anthers 3.
Distribution
Asia-tropical: India.
Reference
Andropogoneae. Blatt & McCann 1994.
[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 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

  • World Checklist of Vascular plants (WCVP)

    • 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