Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA
Poa secunda J. Presl. s.l. is a morphologically highly variable bunchgrass that is a valuable forage species in western North America. There has been much controversy as to whether multiple taxa should be recognised and at what rank in this taxonomically challenging apomictic complex. Here we propos...
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2018
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Online Access: | https://doi.org/10.3897/phytokeys.110.27750 |
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ftzenodo:oai:zenodo.org:1484691 2024-09-09T19:25:23+00:00 Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA Soreng, Robert John Gillespie, Lynn J. 2018-11-05 https://doi.org/10.3897/phytokeys.110.27750 unknown Pensoft Publishers https://zenodo.org/communities/biosyslit https://doi.org/10.3897/phytokeys.110.27750 oai:zenodo.org:1484691 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode PhytoKeys, 110, 101-121, (2018-11-05) Plantae Tracheophyta Liliopsida Poales Poaceae Apomixis hybridisation Poa secunda polyploidy reticulation Secundae taxonomy info:eu-repo/semantics/article 2018 ftzenodo https://doi.org/10.3897/phytokeys.110.27750 2024-07-27T03:31:33Z Poa secunda J. Presl. s.l. is a morphologically highly variable bunchgrass that is a valuable forage species in western North America. There has been much controversy as to whether multiple taxa should be recognised and at what rank in this taxonomically challenging apomictic complex. Here we propose an infraspecific classification for Poa secunda of six varieties within two subspecies, juncifolia and secunda. New combinations are P. secunda vars. ampla, gracillima, juncifolia, nevadensis and scabrella. Conflicting plastid and nrDNA phylogenies show that P. sect. Secundae is of ancient hybrid origin. Based on this and its distinct morphology, the section is raised to the rank of subgenus. A key is presented for P. secunda infraspecies and closely related non-arctic species. Suppl. materials are provided of chromosome counts for Secundae taxa and D.D. Keck specimen annotations of taxa here included in P. secunda. Article in Journal/Newspaper Arctic Zenodo Arctic PhytoKeys 110 101 121 |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Plantae Tracheophyta Liliopsida Poales Poaceae Apomixis hybridisation Poa secunda polyploidy reticulation Secundae taxonomy |
spellingShingle |
Plantae Tracheophyta Liliopsida Poales Poaceae Apomixis hybridisation Poa secunda polyploidy reticulation Secundae taxonomy Soreng, Robert John Gillespie, Lynn J. Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA |
topic_facet |
Plantae Tracheophyta Liliopsida Poales Poaceae Apomixis hybridisation Poa secunda polyploidy reticulation Secundae taxonomy |
description |
Poa secunda J. Presl. s.l. is a morphologically highly variable bunchgrass that is a valuable forage species in western North America. There has been much controversy as to whether multiple taxa should be recognised and at what rank in this taxonomically challenging apomictic complex. Here we propose an infraspecific classification for Poa secunda of six varieties within two subspecies, juncifolia and secunda. New combinations are P. secunda vars. ampla, gracillima, juncifolia, nevadensis and scabrella. Conflicting plastid and nrDNA phylogenies show that P. sect. Secundae is of ancient hybrid origin. Based on this and its distinct morphology, the section is raised to the rank of subgenus. A key is presented for P. secunda infraspecies and closely related non-arctic species. Suppl. materials are provided of chromosome counts for Secundae taxa and D.D. Keck specimen annotations of taxa here included in P. secunda. |
format |
Article in Journal/Newspaper |
author |
Soreng, Robert John Gillespie, Lynn J. |
author_facet |
Soreng, Robert John Gillespie, Lynn J. |
author_sort |
Soreng, Robert John |
title |
Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA |
title_short |
Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA |
title_full |
Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA |
title_fullStr |
Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA |
title_full_unstemmed |
Poa secunda J. Presl (Poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on DNA |
title_sort |
poa secunda j. presl (poaceae): a modern summary of infraspecific taxonomy, chromosome numbers, related species and infrageneric placement based on dna |
publisher |
Pensoft Publishers |
publishDate |
2018 |
url |
https://doi.org/10.3897/phytokeys.110.27750 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
PhytoKeys, 110, 101-121, (2018-11-05) |
op_relation |
https://zenodo.org/communities/biosyslit https://doi.org/10.3897/phytokeys.110.27750 oai:zenodo.org:1484691 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.3897/phytokeys.110.27750 |
container_title |
PhytoKeys |
container_volume |
110 |
container_start_page |
101 |
op_container_end_page |
121 |
_version_ |
1809895128641306624 |