Overview

Distribution

Localities documented in Tropicos sources

Muhlenbergia nardifolia Griseb.:
Argentina (South America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
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Localities documented in Tropicos sources

Muhlenbergia torreyi (Kunth) Hitchc. ex Bush:
Argentina (South America)
Bolivia (South America)
Mexico (Mesoamerica)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
  • Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville.   http://www.tropicos.org/Reference/1103 External link.
  • Soreng, R. J., G. Davidse, P. M. Peterson, F. O. Zuloaga, E. J. Judziewicz, T. S. Filgueiras & O. Morrone. 2003 and onwards. On-line taxonomic novelties and updates, distributional additions and corrections, and editorial changes since the four published volumes of the Catalogue of New World Grasses (Poaceae) published in Contr. U.S. Natl. Herb. vols. 39, 41, 46, and 48. http://www.tropicos.org/Project/CNWG:. In R. J. Soreng, G. Davidse, P. M. Peterson, F. O. Zuloaga, T. S. Filgueiras, E. J. Judziewicz & O. Morrone Internet Cat. New World Grasses. Missouri Botanical Garden, St. Louis.   http://www.tropicos.org/Reference/1024044 External link.
  • Herrera Arrieta, Y. & A. Cortés Ortiz. 2010. Listado florístico y aspectos ecológicos de la familia Poaceae para Chihuahua, Durango y Zacatecas, México. J. Bot. Res. Inst. Texas 4(2): 711–738.   http://www.tropicos.org/Reference/100002652 External link.
  • Espejo Serna, A., A. R. López-Ferrari & J. Valdés-Reyna. 2000. Poaceae. Monocot. Mexic. Sinopsis Floríst. 10: 7–236 [and index].   http://www.tropicos.org/Reference/1015183 External link.
  • Beetle, A. A. 1977. Noteworthy grasses from Mexico V. Phytologia 37(4): 317–407.   http://www.tropicos.org/Reference/2538 External link.
  • Peterson, P. M., J. Valdés-Reyna & Y. Herrera Arrieta. 2007. Muhlenbergiinae (Poaceae: Chloridoideae: Cynodonteae): from northeastern México. J. Bot. Res. Inst. Texas 1(2): 933–1000.   http://www.tropicos.org/Reference/1031940 External link.
  • Beetle, A. A. 1995. Gram. México 4: 1–342. Secretaria de Agricultura y Recursos Hidraulícos: COTECOCA, México.   http://www.tropicos.org/Reference/1019699 External link.
  • Correll, D. S. & M. C. Johnston. 1970. Man. Vasc. Pl. Texas i–xv, 1–1881. The University of Texas at Dallas, Richardson.   http://www.tropicos.org/Reference/1493 External link.
  • Great Plains Flora Association. 1986. Fl. Great Plains i–vii, 1–1392. University Press of Kansas, Lawrence.   http://www.tropicos.org/Reference/637 External link.
  • Zuloaga, F. O., E. G. Nicora, Z. E. R. Agrasar, O. Morrone, J. Pensiero & A. M. Cialdella. 1994. Catálogo de la familia Poaceae en la República Argentina. Monogr. Syst. Bot. Missouri Bot. Gard. 47: i–xi, 1–178.   http://www.tropicos.org/Reference/43109 External link.
  • Barkworth, M. E., K. M. Capels, S. Long & M. B. Piep. 2003. Magnoliophyta: Commelinidae (in part): Poaceae, part 2. 25: i–xxv, 1–783. In Fl. N. Amer. Oxford University Press, New York.   http://www.tropicos.org/Reference/1021466 External link.
  • Peterson, P. M. 2001. Muhlenbergia. In Catalogue of New World Grasses (Poaceae): II. Subfamily Chloridoideae. Contr. U.S. Natl. Herb. 41: 143–173.   http://www.tropicos.org/Reference/1003699 External link.
  • Herrera Arrieta, Y. & P. M. Peterson. 2007. Muhlenbergia (Poaceae) de Chihuahua, México. Sida Bot. Misc. 29: i–x, 1–109.   http://www.tropicos.org/Reference/1030668 External link.
  • Peterson, P. M. & J. J. Ortíz-Diaz. 1998. Allelic variation in the amphitropical disjunct Muhlenbergia torreyi (Poaceae: Muhlenbergiinae). Brittonia 50(3): 381–391.   http://www.tropicos.org/Reference/1008645 External link.
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National Distribution

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Physical Description

Morphology

Physical Description

Perennials, Terrestrial, not aquatic, Stems nodes swollen or brittle, Stems geniculate, decumbent, or lax, sometimes rooting at nodes, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly basal, below middle of stem, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath and blade differentiated, Leaf blades very short, 0.5-2 cm long, Leaf blades twisted 180 degrees, inverted or curled, Leaf blades linear, Leaf blades subulate, needle-like, tip pungent, Leaf blades very narrow or filiform, less than 2 mm wide, Leaf blade margins folded, involute, or conduplicate, Leaf blades mostly glabrous, Leaf blades scabrous, roughened, or wrinkled, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence an open panicle, openly paniculate, branches spreading, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence branches more than 10 to numerous, Flowers bisexual, Spikelets pedicellate, Spikelets laterally compressed, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets solitary at r achis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating above the glumes, glumes persistent, Spikelets disarticulating beneath or between the florets, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes shorter than adjacent lemma, Glumes keeled or winged, Glumes 1 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma similar in texture to glumes, Lemma 3 nerved, Lemma body or surface hairy, Lemma apex dentate, 2-fid, Lemma mucronate, very shortly beaked or awned, less than 1-2 mm, Lemma distinctly awned, more than 2-3 mm, Lemma with 1 awn, Lemma awn less than 1 cm long, Lemma awn from sinus of bifid apex, Lemma awns straight or curved to base, Lemma margins thin, lying flat, Lemma straight, Callus or base of lemma evidently hairy, Callus hairs shorter than lemma, Palea present, well developed, Palea membranous, hyaline, Palea about equal to lemma, Palea 2 nerved or 2 keeled, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear.
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Dr. David Bogler

Source: USDA NRCS PLANTS Database

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Type Information

Isosyntype for Muhlenbergia gracillima Torr.
Catalog Number: US 3376130
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Alleged type specimen status verified from secondary sources
Preparation: Pressed specimen
Collector(s): J. M. Bigelow
Year Collected: 1853
Locality: Fort Smith to the Rio Grande. Llano Estacado., Texas, United States, North America
  • Isosyntype: Torrey, J. 1857. Rep. Explor. Railroad Pacific. 4: 155.
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Isosyntype for Muhlenbergia gracillima Torr.
Catalog Number: US 3376131
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Alleged type specimen status verified from secondary sources
Preparation: Pressed specimen
Collector(s): J. M. Bigelow
Year Collected: 1853
Locality: Fort Smith to the Rio Grande, Antelope Hills, Texas, United States, North America
  • Isosyntype: Torrey, J. 1857. Rep. Explor. Railroad Pacific. 4: 155.
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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

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Names and Taxonomy

Taxonomy

Comments: Distinct species. A different plant from the similarly named Muhlenbergia torreana.

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