Family:
Poaceae Barnhart
Genus:
Andropogon L.

Andropogon gerardi Vitman

This species is accepted, and its native range is N. & Central America.

[GB]
Morphology General Habit
Perennial; caespitose. Rhizomes absent, or short. Culms 80-200 cm long. Lateral branches sparse. Ligule a ciliolate membrane. Leaf-blades 5-10 mm wide; mid-green, or glaucous. Leaf-blade surface glabrous, or hirsute. Leaf-blade margins scabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes; terminal. Racemes 2-7; paired, or digitate; 4-11 cm long. Rhachis fragile at the nodes; glabrous on surface; pubescent on margins, or ciliate on margins. Rhachis hairs 0.5-4 mm long. Rhachis internodes linear, or clavate. Rhachis internode tip transverse; cupuliform; with simple rim. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear, or clavate; pubescent, or ciliate; with 0.5-4 mm long hairs.
Sterile
Companion sterile spikelets well-developed; male; elliptic; 7-11 mm long; as long as fertile. Companion sterile spikelet glumes chartaceous; glabrous; acute; muticous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 7-11 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; inserted. Companion sterile spikelets well-developed; male; elliptic; 7-11 mm long; as long as fertile. Companion sterile spikelet glumes chartaceous; glabrous; acute; muticous.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 7-11 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; inserted.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1 length of spikelet; coriaceous; 2-keeled; keeled laterally. Lower glume intercarinal veins obscure. Lower glume surface flat, or concave, or grooved on either side of midvein. Upper glume lanceolate; coriaceous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume muticous.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; hyaline. Fertile lemma lanceolate; hyaline; without keel. Lemma apex lobed; 2 -fid; muticous, or awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 0-20 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
Morphology Reproductive morphology Flowers
Anthers 3.
Distribution
Europe: southwestern. Pacific: north-central. North America: western Canada, eastern Canada, northwest USA, north-central USA, northeast USA, southwest USA, south-central USA, southeast USA, and Mexico. South America: Mesoamericana and Brazil.
Reference
Andropogoneae. Gr Texas 1993.

Native to:

Alabama, Arizona, Arkansas, Belize, Colorado, Connecticut, Costa Rica, Delaware, District of Columbia, Florida, Georgia, Honduras, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Maryland, Massachusetts, Mexico Central, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Ontario, Pennsylvania, Québec, Rhode I., Saskatchewan, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, West Virginia, Wisconsin, Wyoming

Introduced into:

France, Hawaii, Myanmar

Andropogon gerardi Vitman appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Gay, J. [s.n.], Northern America K000974846
Lindheimer, F. [741], Texas K000974847

First published in Summa Pl. 6: 16 (1792)

Accepted by

  • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
  • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
  • Kress, W.J., DeFilipps, R.A., Farr, E. & Kyi, D.Y.Y. (2003). A Checklist of the Trees, Shrubs, Herbs and Climbers of Myanmar Contributions from the United States National Herbarium 45: 1-590.
  • Powell, A.M. & Worthington, R.D. (2018). Flowering plants of Trans-Pecos Texas and ajacent areas: 1-1444. BRIT Press.

Literature

Kew Backbone Distributions

  • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
  • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.
  • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
  • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
  • Kress, W.J., DeFilipps, R.A., Farr, E. & Kyi, D.Y.Y. (2003). A Checklist of the Trees, Shrubs, Herbs and Climbers of Myanmar Contributions from the United States National Herbarium 45: 1-590.

  • 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