Family:
Poaceae Barnhart
Genus:
Achnatherum P.Beauv.

Achnatherum pekinense (Hance) Ohwi

This species is accepted, and its native range is N. & Central China to Russian Far East and Japan.

[GB]
Morphology General Habit
Perennial; caespitose. Cataphylls evident. Butt sheaths persistent and investing base of culm. Culms erect; 70-150 cm long; 2.5-4 mm diam.; 3-4 -noded. Leaf-sheaths loose. Ligule an eciliate membrane; 0.5-1 mm long; erose; truncate. Leaf-blades involute; 30-60 cm long; 7-15 mm wide; stiff. Leaf-blade surface scabrous; rough adaxially; glabrous, or pubescent; hairy adaxially. Leaf-blade margins scabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; elliptic, or ovate; loose, or effuse; 15-40 cm long; 2-4 cm wide. Primary panicle branches 2-6 -nate; 4-12 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 8-11 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pubescent; obtuse.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 8-11 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.5 mm long; pubescent; obtuse.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma; shiny. Lower glume lanceolate; 1 length of upper glume; membranous; without keels; 3 -veined. Lower glume surface glabrous to pubescent. Lower glume apex acute. Upper glume lanceolate; 8-11 mm long; membranous; without keels; 3 -veined. Upper glume surface glabrous to pubescent. Upper glume apex obtuse, or acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; subterete; 6-8 mm long; coriaceous; without keel; 3 -veined. Lemma lateral veins convergent above. Lemma margins convolute; covering most of palea. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 20-25 mm long overall; with twisted column. Palea 5 mm long; 2 -veined; without keels. Palea surface pubescent; hairy on back.
Morphology Reproductive morphology Flowers
Anthers 3; 4-6 mm long; anther tip penicillate. Stigmas 2. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; 4-5 mm long. Hilum linear.
Distribution
Asia-temperate: Siberia, Soviet far east, China, and eastern Asia.
Reference
Stipeae. Koyama 1994.

Native to:

Amur, China North-Central, China South-Central, China Southeast, Inner Mongolia, Japan, Khabarovsk, Korea, Kuril Is., Manchuria, Primorye, Sakhalin

Achnatherum pekinense (Hance) Ohwi appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Williams, S.W. [13831], China Stipa pekinensis K000587432 syntype Yes

First published in Bull. Natl. Sci. Mus. Tokyo 33: 66 (1953)

Accepted by

  • Iwatsuki, K., Boufford, D.E. & Ohba, H. (eds.) (2020). Flora of Japan IVa: 1-430. Kodansha Ltd., Tokyo.
  • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae. Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.

Not 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. [Cited as Stipa pekinensis.]

Literature

Kew Backbone Distributions

  • Kharkevich, S.S., Probatova, N.S. & Novikov, V.S. (1985). Sosudistye rasteniia sovetskogo Dal'nego Vostoka 1: 1-383. Izd-vo "Nauka," Leningradskoe otd-nie, Leningrad.
  • Koyama, T. (1987). Grasses of Japan and its neighboring regions: an identification manual: 1-570. Kodansha, Tokyo, Japan.
  • Lee, W.T. (1996). Lineamenta Florae Koreae: 1-1688. Soul T'ukpyolsi: Ak'ademi Sojok.
  • 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

  • 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 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

  • Kew Science Photographs

    Copyright applied to individual images