Overview

Distribution

Localities documented in Tropicos sources

Piptatherum exiguum (Thurb.) Dorn:
Canada (North America)
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.
  • 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.
  • Soreng, R. J., J. Valdés-Reyna & A. M. Cialdella. 2002. Stipeae. ined. 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/1011456 External link.
  • Soreng, R. J. 2003. Piptatherum. In Catalogue of New World Grasses (Poaceae): IV. Subfamily Pooideae. Contr. U.S. Natl. Herb. 48: 494–495.   http://www.tropicos.org/Reference/1003642 External link.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Localities documented in Tropicos sources

Oryzopsis exigua Thurb.:
United States (North America)
China (Asia)
Canada (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., J. Valdés-Reyna & A. M. Cialdella. 2002. Stipeae. ined. 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/1011456 External link.
  • Cronquist, A. J., A. H. Holmgren, N. H. Holmgren & Reveal. 1977. Vascular Plants of the Intermountain West, U.S.A. 6: 1–584. In A. J. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal & P. K. Holmgren (eds.) Intermount. Fl. Hafner Pub. Co., New York.   http://www.tropicos.org/Reference/1725 External link.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO 63110 USA

Source: Missouri Botanical Garden

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

National Distribution

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Global Range: Western North America from Colorado to Utah, Nevada, and California north to Montana, Idaho, Washington, Oregon, to British Columbia and Alberta; in Nevada, White Pine, Nye, and Elko Counties (Kartesz, 1988). In Utah, occurs in six counties (Welsh, 1993).

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Physical Description

Morphology

Physical Description

Perennials, Terrestrial, not aquatic, Stems nodes swollen or brittle, Stems erect or ascending, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Basal leaves equal to or exceeding stems, culms, or scapes, 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 linear, 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 a contracted panicle, narrowly paniculate, branches appressed or ascending, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Flowers bisexual, Spikelets pedicellate, Spikelets dorsally compressed or terete, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets solitary at rachis 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 equal to or longer than adjacent lemma, Glumes 3 nerved, Glumes 4-7 nerved, Lemma coriaceous, firmer or thicker in texture than the glumes, Lemma 3 nerved, Lemma body or surface hairy, Lemma apex truncate, rounded, or obtuse, Lemma apex dentate, 2-fid, 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 awn twisted, spirally coiled at base, like a corkscrew, Lemma awn once geniculate, bent once, Lemma margins inrolled, tightly covering palea and caryopsis, Lemma straight, Callus or base of lemma evidently hairy, Callus hairs shorter than lemma, Palea present, well developed, 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.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

Dr. David Bogler

Source: USDA NRCS PLANTS Database

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Ecology

Habitat

Comments: Dry, open ground and open woods to mountain meadows within mixed conifer woods. 8,000 - 10,000 ft. (Kartesz, 1988).

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Piptatherum exiguum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 3
Specimens with Barcodes: 3
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

Reasons: Oryzopsis exigua is known from much of the western United States and north into British Columbia and rare into Alberta.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Names and Taxonomy

Taxonomy

Comments: Accepted as Piptatherum exiguum (Thurb.) Barkworth, comb. nov. in Kartesz (1999). According to the International Plant Name Index (August 2004), Piptatherum exiguum was published, but by Dorn in Vasc. Pl. Wyoming, ed. 3. 377 (2001).

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© NatureServe

Source: NatureServe

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!