Details for: PI 635048, Poa pratensis L., 'Courtyard'


Summary Data
Taxonomy:
Poa pratensis L.
Cultivar:
'Courtyard'
Origin:
Developed – Idaho, United States
Received by NPGS:
07 Jul 2004
Improvement Status:
Cultivar
Form Received:
Seed
Life Form:
Perennial
Life Cycle:
Perennial
Availability
This accession is not available. Contact site for status.
 
There are no images for this accession.

Core Passport Data
Taxonomy:
Poa pratensis L.
Cultivar:
'Courtyard'
Origin:
Developed – Idaho, United States
Received by NPGS:
07 Jul 2004
Improvement Status:
Cultivar
Form Received:
Seed
Life Form:
Perennial
Life Cycle:
Perennial
Source History
Developed

Idaho, United States

Developer(s):
Accession Names and Identifiers
'Courtyard'
Type: Cultivar name

93-1838
Type: Other or unclassified name

J-1838
Type: Other or unclassified name

Narrative
Courtyard is a late maturing Kentucky bluegrass variety, similar to Midnight in its field appearance. Courtyard is slightly earlier in maturity than NuGlade with an equal or greater yield potential.. Spaced plants are pyramidal in shape, similar to Liberator. One-year-old plants average 42 cm in diameter from rhizome extension from a single plant. At anthesis, panicles appear mostly whitish tan in color with a slight purplish cast. In the panicles can be seen a mix of medium green, yellow green, and purplish colors. Other varieties (Midnight, Award ) are more uniformly purple at anthesis. In seed production, leaves are medium green and culms are light green. Culms are smooth to the touch and flag leaf margins are rough. Panicles are upright with nearly horizontal branches at the nodes.
Poa pratensis L.
Genus:
Poa
Family:
Poaceae (alt. Gramineae)
Subfamily:
Pooideae
Tribe:
Poeae
Subtribe:
Poinae
Nomen number:

28996
Place of publication:

Sp. pl. 1:67. 1753, nom. cons.
Comment:
conserved (nom. cons.) with a conserved type (Shenzhen ICN Art. 14.9 & App. IV)
Verified:
05/13/1992 by ARS Systematic Botanists.
Other conspecific taxa
Poa pratensis L. subsp. agassizensis (B. Boivin & D. Löve) Roy L. Taylor & MacBryde (0 active accession[s])
Poa pratensis L. subsp. alpigena (Blytt) Hiitonen (2 active accession[s])
Poa pratensis L. subsp. angustifolia (L.) Arcang. (86 active accession[s])
Poa pratensis L. subsp. colpodea (Th. Fr.) Tzvelev (0 active accession[s])
Poa pratensis L. subsp. pratensis (8 active accession[s])
Autonyms (not in current use), synonyms and invalid designations
Common names
LanguageNameAlternate namenoteseqCitation
EnglishEnglish meadow grass  1Integrated Botanical Information System (IBIS). Australian plant common name database (on-line resource).
EnglishKentucky bluegrass  1Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
Englishsmooth meadow grass  1Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
Frenchpâturin des prés  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
GermanWiesenrispengras  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Italianerba fienarola  2International Seed Testing Association. 1982. A Multilingual Glossary of Common Plant-Names 1. Field crops, grasses and vegetables, ed. 2.
Japanese Rōmajinagahagusa  2Ohwi, J. 1965. Flora of Japan (Engl. ed.).
Portuguesecapim-do-campo  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Spanishgrama de prados  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Spanishpoa común  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Spanishzacate poa  2Rehm, S. 1994. Multilingual dictionary of agronomic plants
Swedishängsgröe  2Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Transcribed Chinesecao di zao shu he  2Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
Transcribed Koreanwangpoapul  2Lee, Y. N. 1997. Flora of Korea.
Transliterated Russianmjatlik lugovoj  2Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Annotations
Other Links
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Pathogens
Vouchers
Citations
  • Brede, D. 2011. Registration of Turf-Type Kentucky Bluegrass Cultivars ‘Awesome’, ‘Blue Velvet’, ‘Courtyard’, ‘Ginney’, and ‘Perfection’. J. Pl. Registr. 5(1):005. DOI: 10.3198/jpr2010.04.0220crc. Number of accessions cited: 5
Pedigree
Description:
Originated as an apomictic, single-plant election from the progeny of the hybrid cross of 'Limousine' pollinated by 'Midnight' Kentucky bluegrass.
Intellectual Property Rights
Journal of Plant Registration. CV-97, BLUEGRASS. Issued: 01 Jan 2011.
  • Brede, D. 2011. Registration of Turf-Type Kentucky Bluegrass Cultivars ‘Awesome’, ‘Blue Velvet’, ‘Courtyard’, ‘Ginney’, and ‘Perfection’. J. Pl. Registr. 5(1):005. DOI: 10.3198/jpr2010.04.0220crc.
Restriction. REST 635048,

U.S. Plant Variety Protection
PVP 200400236
Variety: Courtyard
Taxonomy: Poa pratensis L.
Experimental name/synonym: J-1838; 93-1838
Crop: BLUEGRASS, KENTUCKY
Applicant: J.R. Simplot Company
Date filed: 06/08/2004
Date issued: 07/16/2009
Status: Certificate Issued
Status date: 07/16/2009