Details for: PI 432402, Pascopyrum smithii (Rydb.) Barkworth & D. R. Dewey, 'Arriba'


Summary Data
Taxonomy:
Pascopyrum smithii (Rydb.) Barkworth & D. R. Dewey
Cultivar:
'Arriba'
Origin:
Collected – Colorado, United States
Received by NPGS:
Feb 1979
PI Assigned:
1979
Improvement Status:
Cultivar
Form Received:
Seed
Life Form:
Perennial
Life Cycle:
Perennial
Availability
FormQuantityNoteInventoryCart
Seed200 countPI 432402 2008i SD
Seed available for distribution is a limited resource. The quantity of seed distributed is hopefully sufficient to conduct the intended research. If additional seed is required, the recipient is urged to grow and reproduce the seed. Repeated requests for seed of the same accession will not be honored.
  
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Core Passport Data
Taxonomy:
Pascopyrum smithii (Rydb.) Barkworth & D. R. Dewey
Cultivar:
'Arriba'
Origin:
Collected – Colorado, United States
Received by NPGS:
Feb 1979
PI Assigned:
1979
Improvement Status:
Cultivar
Form Received:
Seed
Life Form:
Perennial
Life Cycle:
Perennial
Source History
Collected

Colorado, United States
Locality: West of Flagler, Kit Carson County, Colorado

Donated
February 1979.
Mississippi, United States

Donor(s):
Accession Names and Identifiers
'Arriba'
Type: Cultivar name

BN-10867
Type: Other or unclassified name

Narrative
Collected August 17, 1957 by J. A. Downs. Joint release of New Mexico and Colorado Agricultural Experiment Station and Soil Conservation Service, U.S. Department of Agriculture.

Western wheatgrass is a cool season, rhizomatous, sod-forming, perennial grass. Culms are erect, 30-60 cm tall with creeping rhizomes; blades are firm, stiff, mostly flat when fresh, involute on drying, strongly nerved, scabrous, to 4 mm wide and tapering to a sharp point. Flowering spikes are erect, 7-15cm long; spikelets are closely inbricate, 6-10 flowered, 1-2 cm long; glumes are rigid, tapering to a short awn, and are faintly nerved. Entire plant is usually glaucous and gray-green in color.

Pascopyrum smithii (Rydb.) Barkworth & D. R. Dewey
Genus:
Pascopyrum
Family:
Poaceae (alt. Gramineae)
Subfamily:
Pooideae
Tribe:
Triticeae
Nomen number:

102367
Place of publication:

Amer. J. Bot. 72:772. 1985 (Á. Löve, Taxon 29:168, 547. 1980, nom. inval.)
Comment:
Löve failed to provide a description or diagnosis on p. 168, so the genus Pascopyrum was not validly published until a later issue (p. 547), when he then failed to fully cite a basionym for P. smithii
Verified:
11/09/2007 by ARS Systematic Botanists.
Other conspecific taxa
Autonyms (not in current use), synonyms and invalid designations
Basionym
Agropyron smithii Rydb.
Agropyron smithii Rydb. var. smithii

Homotypic Synonym(s)
Elymus smithii (Rydb.) Gould
Elytrigia smithii (Rydb.) Á. Löve

Heterotypic Synonym(s)
Agropyron glaucum (Desf.) Roem. & Schult. var. occidentale Scribn.
Agropyron occidentale (Scribn.) Scribn.
Agropyron smithii Rydb. var. molle (Scribn. & J. G. Sm.) M. E. Jones
Agropyron spicatum (Pursh) Scribn. & J. G. Sm. var. molle Scribn. & J. G. Sm.

Common names
LanguageNameAlternate namenoteseqCitation
Englishwestern wheatgrass  1Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
English (Canada)western wheat grass Agriculture & Agri-Food Canada official name2Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 29-30.
French (Canada)agropyre de l’Ouest Agriculture & Agroalimentaire Canada nom officiel2Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 29-30.
Italianagropiro dell'Ovest  2International Seed Testing Association. 1982. A Multilingual Glossary of Common Plant-Names 1. Field crops, grasses and vegetables, ed. 2.
Annotations
  • Nomenclature Name Change: 02 Oct 1991, from Elymus smithii (Rydb.) Gould to Pascopyrum smithii (Rydb.) Barkworth & D. R. Dewey
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Observations

Phenotype Data

CategoryDescriptorDescriptionValueSample SizeStudyInventoryAvailability
MORPHOLOGYSeed weight 100Weight of 100 seeds in grams.0.808 GRASS.SEEDWEIGHT.WRPISPI 432402 2008i SD