Poaceae
Pseudodichanthium

Pseudodichanthium serrafalcoides (Cooke & Stapf) Bor

First published in Indian Forester 66: 272 (1940)
This species is accepted
The native range of this species is Oman, India. It is an annual 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
Annual. Culms 30-90 cm long; rooting from lower nodes. Ligule a ciliolate membrane; 1 mm long. Leaf-blades 5-15 cm long; 4-6 mm wide. Leaf-blade surface scabrous. Leaf-blade margins scabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Peduncle flexuous. Racemes 1; single; oblong; arcuate; unilateral; 1.5-4 cm long. Rhachis fragile at the nodes; angular; ciliate on margins. Rhachis internodes cuneate. Rhachis internode tip oblique; cupuliform. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels cuneate; flattened; 2 mm long; ciliate; tip cupuliform; toothed.
Sterile
Basal sterile spikelets well-developed; 4-6 in number; barren; elliptic; 8-9 mm long; larger than fertile. Basal sterile spikelet glumes chartaceous (winged). Companion sterile spikelets well-developed; containing empty lemmas; elliptic; asymmetrical; dorsally compressed; 10 mm long; longer than fertile; deciduous with the fertile. Companion sterile spikelet glumes chartaceous; winged on margins; distinctly veined; acute. Companion sterile spikelet lemmas 1; enclosed by glumes.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 6.5-7 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base obtuse; inserted. Basal sterile spikelets well-developed; 4-6 in number; barren; elliptic; 8-9 mm long; larger than fertile. Basal sterile spikelet glumes chartaceous (winged). Companion sterile spikelets well-developed; containing empty lemmas; elliptic; asymmetrical; dorsally compressed; 10 mm long; longer than fertile; deciduous with the fertile. Companion sterile spikelet glumes chartaceous; winged on margins; distinctly veined; acute. Companion sterile spikelet lemmas 1; enclosed by glumes.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 6.5-7 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base obtuse; inserted.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; asymmetrical; 6.5-7 mm long; 1 length of spikelet; chartaceous; without keels; winged on margins; winged broadly; winged all along. Lower glume apex emarginate. Upper glume elliptic; 6 mm long; chartaceous; without keels; 3 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 3.5 mm long; hyaline; 0 -veined; without midvein; without lateral veins. Fertile lemma linear; hyaline; without keel; 1 -veined. Lemma apex awned; 1 -awned. Principal lemma awn apical; geniculate; 35 mm long overall; with twisted column. Column of lemma awn 15 mm long; glabrous. Palea absent or minute.
Distribution
Asia-temperate: Arabia. Asia-tropical: India.
Reference
Andropogoneae. Bor.
[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 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

  • Kew Science Photographs

    • Copyright applied to individual images