Family:
Poaceae Barnhart
Genus:
Calamagrostis Adans.

Calamagrostis sinelatior (Keng f.) P.C.Kuo & S.L.Lu ex J.L.Yang

This species is accepted, and its native range is China (Sichuan, Shaanxi, Henan).

[GB]
Morphology General Habit
Perennial; caespitose. Culms erect; 130-150 cm long; 3-5 mm diam.; 3 -noded; with 0.4-0.5 of their length below uppermost node. Lateral branches lacking. Ligule an eciliate membrane; 4-20 mm long; lacerate. Leaf-blades 9-45 cm long; 4-8 mm wide. Leaf-blade surface scabrous; rough abaxially; puberulous; sparsely hairy; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle 27-30 cm long; scaberulous above. Panicle open; ovate; 20-33 cm long; 6-15 cm wide. Primary panicle branches ascending, or spreading; whorled at most nodes; 9 cm long. Panicle axis with lower internodes 2.5-5.5 cm long; scaberulous; glabrous. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 3 mm long; 0.75-0.9 length of lemma.
Fertile
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 3 mm long; 0.75-0.9 length of lemma.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 4-5 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume surface scabrous. Lower glume apex acute. Upper glume lanceolate; 4-5 mm long; 1.2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume lateral veins distinct. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 3.5-4 mm long; membranous; without keel; 5 -veined. Lemma apex emarginate; awned; 1 -awned. Principal lemma awn dorsal; arising 0.1 way up back of lemma; geniculate; 5 mm long overall; with twisted column. Palea 0.8-0.9 length of lemma; 2 -veined. Palea apex dentate; 2 -fid. Rhachilla extension 1 mm long; villous; with 4 mm long hairs.
Morphology Reproductive morphology Flowers
Lodicules 2. Anthers 3; 2 mm long; yellow. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
Asia-temperate: China.
Reference
Aveneae. Keng 1996.

Native to:

China North-Central, China South-Central, China Southeast

Calamagrostis sinelatior (Keng f.) P.C.Kuo & S.L.Lu ex J.L.Yang appears in other Kew resources:

First published in Fl. Sichuanica 5(2): 90 (1988)

Accepted by

  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.

  • GrassBase - The Online World Grass Flora

    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0