Agropyron Gaertn.

This genus is accepted, and its native range is Temp. Eurasia, N. Africa.

[GB]

nonem

Morphology General Habit
Perennial. Rhizomes absent (12), or elongated (7). Culms erect (4/8), or geniculately ascending (4/8), or decumbent (1/8); 10-44.18-100 cm long. Culm-nodes swollen (1/1). Lateral branches lacking (4/4). Leaf-sheath auricles absent (13), or falcate (6). Ligule an eciliate membrane (18), or a ciliolate membrane (1). Leaf-blades stiff (2), or firm (17). Leaf-blade midrib conspicuous (1/1).
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Peduncle tipped by a glumaceous appendage (1/1). Racemes single; linear (14), or lanceolate (1), or oblong (8), or ovate (1); bilateral; bearing few fertile spikelets (5), or many spikelets (17); bearing 3 fertile spikelets on each (1/5), or 4 fertile spikelets on each (4/5), or 5 fertile spikelets on each (5/5), or 6-8 fertile spikelets on each (4/5), or 9-10 fertile spikelets on each (3/5), or 11-13 fertile spikelets on each (1/5). Rhachis flattened (2/2); terminating in a spikelet (18), or barren extension (1); extension bristle-like (1/1). Spikelet packing broadside to rhachis; crowded (5), or contiguous (10), or lax (2), or distant (2); 2 -rowed (1/1). Rhachis internodes linear (3), or oblong (16). Rhachis internode tip flat (1/1). Spikelets appressed (1), or ascending (11), or spreading (3), or pectinate (6), or deflexed (2); solitary. Fertile spikelets sessile (18), or pedicelled (1). Pedicels oblong (1/1).
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2-5-10 fertile florets; with diminished florets at the apex. Spikelets lanceolate (1), or elliptic (1), or oblong (16), or ovate (2); laterally compressed; 7-11.37-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous (15), or pubescent (4). Floret callus glabrous (1/2), or pubescent (1/2).
Fertile
Spikelets comprising 2-5-10 fertile florets; with diminished florets at the apex. Spikelets lanceolate (1), or elliptic (1), or oblong (16), or ovate (2); laterally compressed; 7-11.37-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous (15), or pubescent (4). Floret callus glabrous (1/2), or pubescent (1/2).
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet; similar to fertile lemma in texture (6), or firmer than fertile lemma (13); parallel to lemmas (17), or gaping (2). Lower glume linear (2), or lanceolate (15), or ovate (2); 0.66-0.9475-1 length of upper glume; coriaceous (18/18); without keels (2), or 1-keeled (17); 1 -veined (6/17), or 3 -veined (7/17), or 4 -veined (3/17), or 5 -veined (4/17), or 6 -veined (1/17), or 7 -veined (2/17). Lower glume lateral veins absent (4), or distinct (15); without ribs (14/15), or ribbed (1/15). Lower glume surface smooth (17), or asperulous (3); glabrous, or pilose (2). Lower glume apex obtuse (1), or acute (4), or acuminate (13), or attenuate (1), or setaceously attenuate (1); muticous (12), or mucronate (1), or awned (8). Upper glume linear (1/18), or lanceolate (15/18), or ovate (2/18); 0.4-0.7389-1 length of adjacent fertile lemma; coriaceous (18/18); with undifferentiated margins (15), or hyaline margins (1), or membranous margins (1), or scarious margins (2); without keels (2/18), or 1-keeled (16/18); 1 -veined (5/17), or 3 -veined (7/17), or 4 -veined (4/17), or 5 -veined (5/17), or 6 -veined (1/17), or 7 -veined (2/17), or 9 -veined (1/17). Upper glume primary vein eciliate (17), or ciliate (6). Upper glume lateral veins without ribs (14/15), or ribbed (1/15); convergent at apex (4/4). Upper glume surface smooth (17), or asperulous (3); glabrous, or pilose (2). Upper glume apex obtuse (1/18), or acute (3/18), or acuminate (13/18), or attenuate (1/18), or setaceously attenuate (1/18); muticous (11/18), or mucronate (1/18), or awned (8/18); 1 -awned (8/8).
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate (7), or elliptic (9), or ovate (4); chartaceous (13), or coriaceous (6); keeled; 5 -veined (18), or 6-7 -veined (2), or 10-14 -veined (1). Lemma midvein without distinctive roughness (18), or scabrous (1). Lemma surface smooth (17), or asperulous (2); glabrous (12), or puberulous (1), or pubescent (5), or pilose (5), or hirsute (1), or villous (1). Lemma apex obtuse (1), or acute (12), or acuminate (6); muticous (6), or mucronate (2), or awned (14); 1 -awned (14/14). Principal lemma awn straight (14/15), or hooked (1/15). Palea 0.9-0.975-1 length of lemma. Palea keels smooth (13), or scaberulous (1), or scabrous (5); eciliate (11), or ciliate (9). Palea surface glabrous (17), or puberulous (1), or pubescent (1). Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2 (7/7); membranous (3/3); glabrous (6/7), or ciliate (1/7). Anthers 3 (10/10). Stigmas 2 (3/3). Ovary unappendaged (9), or with a fleshy appendage below style insertion (10); pubescent on apex (15/15).
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp (18/18); linear (1/7), or ellipsoid (1/7), or oblong (5/7); apex fleshy (10/10). Embryo 0.2 length of caryopsis. Hilum linear (12/12); 0.75-0.9792-1 length of caryopsis.
Distribution
Europe (6), or Africa (1), or Temperate Asia (10), or Tropical Asia (4), or Australasia (4), or North America (3).

Native to:

Afghanistan, Albania, Altay, Amur, Austria, Bulgaria, Buryatiya, Central European Rus, China North-Central, Chita, Czechoslovakia, East European Russia, Egypt, Greece, Hungary, Inner Mongolia, Iran, Iraq, Irkutsk, Italy, Kamchatka, Kazakhstan, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Krym, Magadan, Manchuria, Mongolia, Morocco, North Caucasus, Northwest European R, Pakistan, Primorye, Qinghai, Romania, South European Russi, Spain, Tadzhikistan, Transcaucasus, Turkey, Turkey-in-Europe, Turkmenistan, Tuva, Ukraine, Uzbekistan, West Himalaya, West Siberia, Xinjiang, Yakutskiya, Yugoslavia

Introduced into:

Alaska, Alberta, Arizona, British Columbia, California, Chile South, Colorado, Delaware, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Labrador, Manitoba, Massachusetts, Mexico Northeast, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Mexico, New York, North Dakota, Northwest Territorie, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Québec, Saskatchewan, South Dakota, Texas, Utah, Washington, Wisconsin, Wyoming, Yukon

Agropyron Gaertn. appears in other Kew resources:

First published in Novi Comment. Acad. Sci. Imp. Petrop. 14(1): 539 (1770)

Accepted by

  • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

  • 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