1. Family: Poaceae Barnhart
    1. Genus: Danthonia DC.
      1. Danthonia intermedia Vasey

        This species is accepted, and its native range is Russian Far East, Canada to W. & E. Central U.S.A.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 10-50 cm long; disarticulating at the nodes. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs. Leaf-blades involute; 5-20 cm long; 1-2 mm wide. Leaf-blade surface glabrous, or pilose; sparsely hairy.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; lanceolate; 2-5 cm long; bearing few spikelets. Primary panicle branches appressed; bearing 1 fertile spikelets on each lower branch. Spikelets appressed; solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets with diminished florets at the apex. Spikelets elliptic; laterally compressed; 15 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pilose.
    Fertile
    Spikelets with diminished florets at the apex. Spikelets elliptic; laterally compressed; 15 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pilose.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 15 mm long; 1 length of upper glume; membranous; without keels; 3 -veined. Lower glume apex acute. Upper glume lanceolate; 15 mm long; 2 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex acute.
    Florets
    Fertile lemma elliptic; 7-8 mm long; chartaceous; without keel; 5 -veined. Lemma margins ciliate; hairy below. Lemma apex lobed; 2 -fid; incised 0.5 of lemma length; awned; 3 -awned. Principal lemma awn from a sinus; geniculate; 7-9 mm long overall; with twisted column. Lateral lemma awns arising on apex of lobes; 1-2 mm long; shorter than principal. Palea 2 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; cuneate; fleshy; glabrous. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp. Hilum linear.
    Cleistogene
    Cleistogenes present; in lower sheaths.
    Distribution
    Asia-temperate: Soviet far east. North America: Subarctic, western Canada, eastern Canada, northwest USA, north-central USA, southwest USA, and south-central USA.
    Reference
    Arundineae. Man US Gr 1993.

    Images

    Distribution

    Native to:

    Alberta, Arizona, Arkansas, British Columbia, California, Colorado, Idaho, Kamchatka, Khabarovsk, Labrador, Magadan, Manitoba, Michigan, Montana, Nevada, New Mexico, Newfoundland, Nova Scotia, Ontario, Oregon, Québec, Saskatchewan, South Dakota, Utah, Washington, Wyoming, Yukon

    Danthonia intermedia Vasey appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Oct 1, 1961 Cusick, W.C. [2047], USA K000702318
    May 1, 1960 Drummond [s.n.], Canada K000702302
    May 1, 1960 Purpus, C.A. [5127], USA K000702320
    May 1, 1960 Peck, M.E. [4017], USA K000702317
    May 1, 1960 Komarov, V.L. [s.n.], Russian Federation K000702149 Unknown type material
    May 1, 1960 Bollauder [4], USA K000702319
    Oct 1, 1959 Peck, M.E. [9539], USA K000702313
    Oct 1, 1959 Merrill, E.D. [336], USA K000702310
    Oct 1, 1959 Hitchcock, A.S. [1437], USA K000702323
    Oct 1, 1959 Baker, C.F. [164], USA K000702329
    Oct 1, 1959 Baker, C.F. [164], USA K000702330
    Oct 1, 1959 Rydberg, P.A. [3602], USA K000702308
    Oct 1, 1959 Rydberg, P.A. [3293], USA K000702331
    Oct 1, 1959 Macoun, J. [s.n.], Canada K000702298
    Oct 1, 1959 Nelson, A. [6459], USA K000702305
    Oct 1, 1959 Nelson, A. [3959], USA K000702306
    Oct 1, 1959 Nelson, A. [7773], USA K000702307
    Oct 1, 1959 Kirkwood, J.E. [1978], USA K000702324
    Oct 1, 1959 Thompson, J.W. [5265], USA K000702328
    Oct 1, 1959 Leiberg, J.B. [593], USA K000702314
    Oct 1, 1959 Leiberg, J.B. [605], USA K000702316
    Oct 1, 1959 Wooton, E.O. [s.n.], USA K000702325
    Oct 1, 1959 Tracy, J.P. [13421], USA K000702321
    Oct 1, 1959 Peterson, P.M. [18764], USA K000702326
    Oct 1, 1959 Wolfe, J. [1170-1], USA K000702333
    Oct 1, 1959 Wolfe, J. [1170-1], USA K000702334
    Oct 1, 1959 Shear, C.L. [1011], USA K000702322
    Oct 1, 1959 Macoun, J.M. [26079], Canada K000702296
    Oct 1, 1959 s.coll. [89], USA K000702311
    Oct 1, 1959 Suksdorf, W.N. [691], USA K000702327
    Oct 1, 1959 Collins, J.F. [27], Canada K000702299
    Oct 1, 1959 Williams, J.A. [2930], USA K000702312
    Oct 1, 1959 Clements, F.E. [343], USA K000702332
    Oct 1, 1959 Vasey, G. [656], USA K000702335
    Oct 1, 1959 Vasey, G. [656], USA K000702336
    Jun 6, 1958 Cusick, W.C. [2227], USA K000702338 Unknown type material
    Jun 6, 1958 Pase, C.P. [863], USA K000702337
    Sep 9, 1947 Dore, W.G. [47-803], Canada K000702297
    Jan 1, 1947 Breitung, A.J. [4450], Canada K000702295
    Drummond [s.n.], Canada K000702301
    Drummond [s.n.], Canada K000702303
    Merrill, E.D. [s.n.], USA K000702309
    Macoun, J. [1825], Canada K000702293
    Macoun, J. [s.n.], Canada K000702300
    Calder, J.A. [18788], Canada K000702287
    Calder, J.A. [32160], Canada K000702288
    Calder, J.A. [36172], Canada K000702289
    Calder, J.A. [22150], Canada K000702290
    Calder, J.A. [35784], Canada K000702291
    Calder, J.A. [32160], Canada K000702292
    Hoover, R.F. [4496], USA K000702315
    Aiden, S.G. [1484], Canada K000702294
    Peterson, P.M [18368], Canada K000702304

    First published in Bull. Torrey Bot. Club 10: 52 (1883)

    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.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    Literature

    Kew Backbone Distributions
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
    • 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.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    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 2020. 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 2020. 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