Poaceae
Pseudoraphis

Pseudoraphis brunoniana (Griff.) Pilg.

First published in Notizbl. Bot. Gart. Berlin-Dahlem 10: 209, 210 (1928)
This species is accepted
The native range of this species is E. India to Japan and Philippines. It is a perennial and grows primarily in the subtropical biome.

Descriptions

Morphology General Habit
Perennial; mat forming. Stolons present. Culms prostrate; 15-30 cm long; rooting from lower nodes. Culm-nodes pubescent. Ligule a ciliolate membrane. Leaf-blades floating; 4-6 cm long; 2-4 mm wide. Leaf-blade surface scaberulous.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 15-20; borne along a central axis; ascending, or spreading; 2.5-3 cm long; bearing 1 spikelet, or few fertile spikelets; bearing 1-3 fertile spikelets on each. Central inflorescence axis 5-12 cm long. Rhachis angular; scabrous on margins; terminating in a barren extension; extension bristle-like; extension 10-15 mm long. Spikelet packing abaxial. Spikelets appressed; solitary. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 8-10 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 8-10 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; thinner than fertile lemma. Lower glume oblate; 1 mm long; 0.1 length of spikelet; hyaline; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 7-9 -veined. Upper glume surface scabrous. Upper glume margins eciliate, or ciliolate. Upper glume apex attenuate; awned; 1 -awned. Upper glume awn 1-10 mm long.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets male; with palea. Lemma of lower sterile floret elliptic; 7-8 mm long; 0.8 length of spikelet; membranous; attenuate; awned. Awn of lower sterile floret 1-5 mm long. Palea of lower sterile floret 0.5 length of lemma. Fertile lemma oblong; 2.5-3 mm long; cartilaginous; without keel. Lemma margins flat. Lemma apex acute. Palea 1 length of lemma; cartilaginous; without keels.
Morphology Reproductive morphology Flowers
Anthers 3.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ovoid; 1.5 mm long.
Distribution
Asia-temperate: China and eastern Asia. Asia-tropical: India, Indo-China, and Papuasia.
Reference
Paniceae. Fl Assam 1993.
[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: not 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 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