Piptatherum P.Beauv.
  • Ess. Agrostogr.: 17 (1812) 


Notes: Distribution: Temp. & Subtrop. Northern Hemisphere to Ethiopia

General Description

HABIT Perennial. Rhizomes absent (32), or short (2). Culms erect (18/22), or geniculately ascending (5/22), or decumbent (1/22); 8-56-150 cm long. Lateral branches lacking (1/1). Ligule an eciliate membrane. Leaf-blades filiform (3), or linear (31); herbaceous (30), or coriaceous (4); stiff (5), or firm (29). INFLORESCENCE Inflorescence a panicle; exserted, or embraced at base by subtending leaf (1). Panicle open (26), or contracted (9). Primary panicle branches not whorled (33), or whorled at most nodes (1). Spikelets solitary. Fertile spikelets pedicelled. Pedicels tip widened (2/2). FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate (17), or elliptic (6), or oblong (2), or ovate (13); dorsally compressed; 2.49-6.476-12 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous (16/16). GLUMES Glumes persistent; shorter than spikelet (1), or reaching apex of florets (1), or exceeding apex of florets (32); thinner than fertile lemma. Lower glume lanceolate (2), or elliptic (15), or oblong (1), or ovate (16); 1-1.007-1.2 length of upper glume; hyaline (1), or membranous (32), or herbaceous (1); without keels; 1-6-9 -veined. Lower glume lateral veins absent (1), or obscure (1), or distinct (32). Lower glume surface smooth (30), or asperulous (2), or scabrous (2). Lower glume apex entire (33), or dentate (1); 2 -fid (1/1); obtuse (2/33), or acute (17/33), or acuminate (16/33). Upper glume lanceolate (2), or elliptic (15), or oblong (1), or ovate (16); 0.9-1.483-2 length of adjacent fertile lemma; hyaline (2), or membranous (31), or herbaceous (1); with undifferentiated margins (32), or hyaline margins (2); without keels; 1 -veined (2/24), or 2 -veined (1/24), or 3 -veined (9/24), or 4 -veined (3/24), or 5 -veined (15/24), or 6-7 -veined (7/24), or 8-9 -veined (2/24). Upper glume surface smooth (30), or asperulous (2), or scabrous (2). Upper glume apex obtuse (2), or acute (18), or acuminate (16). FLORETS Fertile lemma linear (4), or lanceolate (11), or elliptic (12), or oblong (3), or ovate (11), or obovate (1); dorsally compressed; coriaceous (33), or indurate (1); without keel; 3 -veined (3/5), or 5 -veined (2/5). Lemma surface glabrous (8), or puberulous (2), or pubescent (19), or pilose (4), or villous (1); without hair tufts (32), or with basal hair tufts near margin (2), or with conspicuous apical hairs (1). Lemma margins involute; exposing palea (33), or covering most of palea (1). Lemma apex entire (31), or dentate (3); 2 -fid (3/3); obtuse (21/29), or acute (7/29), or rostrate (1/29); without ornament, or pubescent (1); muticous (1), or awned (33); 1 -awned (33/33). Principal lemma awn apical (31/33), or subapical (2/33); straight (24/33), or curved (5/33), or flexuous (4/33), or bigeniculate (1/33). Palea 1 length of lemma; membranous (1), or coriaceous (32), or indurate (1); 2 -veined (33/33); without keels (33), or 2-keeled (1). FLOWER Lodicules 2 (1/18), or 3 (17/18). Anthers 3 (27/27). FRUIT Caryopsis with adherent pericarp (27/27); fusiform (1/15), or ellipsoid (10/15), or oblong (2/15), or ovoid (1/15), or obovoid (2/15); isodiametric (1/1). Embryo 0.25-0.3167-0.5 length of caryopsis. Hilum linear (14/14); 0.8-0.8938-0.9 length of caryopsis. DISTRIBUTION Europe (5), or Africa (4), or Temperate Asia (29), or Tropical Asia (7), or Australasia (1), or Pacific (1), or North America (4), or South America (1).

Distribution Map

 
  • Native distribution
Found in
  • Africa Macaronesia Canary Is.
  • Northeast Tropical Africa Eritrea
  • Ethiopia
  • Northern Africa Algeria
  • Libya
  • Morocco
  • Tunisia
  • Asia-Temperate Arabian Peninsula Gulf States
  • Saudi Arabia
  • Yemen
  • Caucasus North Caucasus
  • Transcaucasus
  • China China North-Central
  • China South-Central
  • China Southeast
  • Qinghai
  • Tibet
  • Xinjiang
  • Eastern Asia Nansei-shoto
  • Taiwan
  • Middle Asia Kazakhstan
  • Kirgizistan
  • Tadzhikistan
  • Turkmenistan
  • Uzbekistan
  • Mongolia Mongolia
  • Western Asia Afghanistan
  • Cyprus
  • East Aegean Is.
  • Iran
  • Iraq
  • Lebanon-Syria
  • Palestine
  • Sinai
  • Turkey
  • Asia-Tropical Indian Subcontinent East Himalaya
  • Nepal
  • Pakistan
  • West Himalaya
  • Europe Eastern Europe Krym
  • South European Russia
  • Ukraine
  • Middle Europe Austria
  • Czechoslovakia
  • Hungary
  • Southeastern Europe Albania
  • Bulgaria
  • Greece
  • Italy
  • Kriti
  • Romania
  • Sicilia
  • Turkey-in-Europe
  • Yugoslavia
  • Southwestern Europe Baleares
  • Corse
  • France
  • Portugal
  • Sardegna
  • Spain
  • Northern America Eastern Canada Labrador
  • New Brunswick
  • Nova Scotia
  • Ontario
  • Québec
  • North-Central U.S.A. Iowa
  • Minnesota
  • North Dakota
  • South Dakota
  • Wisconsin
  • Northeastern U.S.A. Connecticut
  • Indiana
  • Maine
  • Masachusettes
  • Michigan
  • New Hampshire
  • New Jersey
  • New York
  • Pennsylvania
  • Rhode I.
  • Vermont
  • Northwestern U.S.A. Colorado
  • Wyoming
  • Subarctic America Northwest Territories
  • Yukon
  • Western Canada Alberta
  • British Columbia
  • Manitoba
  • Saskatchewan

  Bibliography

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

 Information From

GrassBase - The Online World Grass Flora
http://www.kew.org/data/grasses-db/
Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora. http://www.kew.org/data/grasses-db.html. [accessed 24 January 2012; 14:30 GMT]
  • A © Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
eMonocot
http://e-monocot.org
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
  • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
  • C See http://kew.org/about-kew/website-information/legal-notices/index.htm You may use data on these Terms and Conditions and on further condition that: The data is not used for commercial purposes; You may copy and retain data solely for scholarly, educational or research purposes; You may not publish our data, except for small extracts provided for illustrative purposes and duly acknowledged; You acknowledge the source of the data by the words "With the permission of the Trustees of the Royal Botanic Gardens, Kew" in a position which is reasonably prominent in view of your use of the data; Any other use of data or any other content from this website may only be made with our prior written agreement.