Paul M. Peterson
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View article: A phylogeny of the Cotteinae (Poaceae, Chloridoideae, Eragrostideae)
A phylogeny of the Cotteinae (Poaceae, Chloridoideae, Eragrostideae) Open
To investigate the evolutionary relationships among 23 species in the Cotteinae we generated a DNA sequence-derived phylogeny utilizing three plastid (rps16-trnK spacer, rps16 intron, rpl32-trnL spacer) regions and the nuclear ribosomal in…
View article: Reticulation within Sporobolus: recognition of two new sections, Acinifolii and Thellungia, and a new genus, Hyalolemma (Poaceae, Chloridoideae, Zoysieae, Sporobolinae)
Reticulation within Sporobolus: recognition of two new sections, Acinifolii and Thellungia, and a new genus, Hyalolemma (Poaceae, Chloridoideae, Zoysieae, Sporobolinae) Open
We present a molecular DNA phylogeny utilizing four plastid regions ( rps16–trnK spacer, rps16 intron, rpl32–trnL spacer, ndhA intron) and the nuclear ribosomal internal transcribed spacer (ITS) region, investigating 123 species of subtrib…
View article: An ITS phylogeny of Festuca s.l. clarifies the generic circumscription of the broad-leaved complex (Poaceae, Pooideae, Poeae, Loliinae)
An ITS phylogeny of Festuca s.l. clarifies the generic circumscription of the broad-leaved complex (Poaceae, Pooideae, Poeae, Loliinae) Open
To investigate the evolutionary relationships among species of Festuca s.l. we generated a nuclear ribosomal DNA ITS phylogeny recovering 10 strongly supported clades or genera: Drymochloa, Festuca, Leucopoa, Locajonoa, Lolium, Hesperochlo…
View article: Phylogeny, biogeography, reticulation, and classification of <i>Agrostis</i> (Poaceae: Pooideae: Poeae: Agrostidinae) with expansion of <i>Polypogon</i> to include <i>Lachnagrostis</i> (in part)
Phylogeny, biogeography, reticulation, and classification of <i>Agrostis</i> (Poaceae: Pooideae: Poeae: Agrostidinae) with expansion of <i>Polypogon</i> to include <i>Lachnagrostis</i> (in part) Open
To investigate the evolutionary relationships and biogeographical history among the species of Agrostis and allied genera within the subtribe Agrostidinae, we generated a phylogeny based on sequences from nuclear ribosomal DNA (ITS) and th…
View article: Nuclear phylogenomics of grasses (Poaceae) supports current classification and reveals repeated reticulation
Nuclear phylogenomics of grasses (Poaceae) supports current classification and reveals repeated reticulation Open
Summary Grasses (Poaceae) comprise around 11,800 species and are central for human livelihoods and terrestrial ecosystems. Knowing their relationships and evolutionary history is key to comparative research and crop breeding. Advances in g…
View article: Taxonomic revision of Muhlenbergia (Poaceae, Chloridoideae, Cynodonteae, Muhlenbergiinae) in Central America: phylogeny and classification
Taxonomic revision of Muhlenbergia (Poaceae, Chloridoideae, Cynodonteae, Muhlenbergiinae) in Central America: phylogeny and classification Open
A taxonomic treatment of 38 species of Muhlenbergia , a phylogeny based on analysis of six DNA sequence markers, and classification of Muhlenbergia for Central America (Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panam…
View article: A phylogeny of the Triraphideae including Habrochloa and Nematopoa (Poaceae, Chloridoideae)
A phylogeny of the Triraphideae including Habrochloa and Nematopoa (Poaceae, Chloridoideae) Open
To investigate the evolutionary relationships among species of the tribe Triraphideae (including two monotypic genera, Habrochloa and Nematopoa ), we generated a phylogeny based on DNA sequences from nuclear ribosomal (ITS) and four plasti…
View article: A biogeographical analysis of <i>Muhlenbergia</i> (Poaceae: Chloridoideae: Cynodonteae: Muhlenbergiinae)
A biogeographical analysis of <i>Muhlenbergia</i> (Poaceae: Chloridoideae: Cynodonteae: Muhlenbergiinae) Open
A phylogeny based on the analysis of six DNA sequence markers (ITS, ndhA intron, rpl32‐trnL , rps3, rps16 intron, and rps16‐trnK ) is used to infer ancestral areas and divergence times, and reconstruct the biogeographical history and evolu…
View article: Utilizing Participatory Research to Engage Underserved Populations to Improve Health-Related Outcomes in Delaware
Utilizing Participatory Research to Engage Underserved Populations to Improve Health-Related Outcomes in Delaware Open
Cooperative Extension is a community outreach program. Despite its large reach, there is a need for the evaluation of changes in health-related outcomes for individuals engaged with Cooperative Extension. A team-based challenge was develop…
View article: Phylogeny, classification, and biogeography of <i>Afrotrichloris, Apochiton, Coelachyrum, Dinebra, Eleusine, Leptochloa, Schoenefeldia</i>, and a new genus, <i>Schoenefeldiella</i> (Poaceae: Chloridoideae: Cynodonteae: Eleusininae)
Phylogeny, classification, and biogeography of <i>Afrotrichloris, Apochiton, Coelachyrum, Dinebra, Eleusine, Leptochloa, Schoenefeldia</i>, and a new genus, <i>Schoenefeldiella</i> (Poaceae: Chloridoideae: Cynodonteae: Eleusininae) Open
To investigate the evolutionary relationships among species of Afrotrichloris, Apochiton, Coelachyrum, Dinebra, Eleusine, Leptochloa , and Schoenefeldia of subtribe Eleusininae, a phylogeny based on DNA sequences from nine gene regions (IT…
View article: A 313 plastome phylogenomic analysis of Pooideae: Exploring relationships among the largest subfamily of grasses
A 313 plastome phylogenomic analysis of Pooideae: Exploring relationships among the largest subfamily of grasses Open
View article: A phylogeny of species near Agrostis supporting the recognition of two new genera, Agrostula and Alpagrostis (Poaceae, Pooideae, Agrostidinae) from Europe
A phylogeny of species near Agrostis supporting the recognition of two new genera, Agrostula and Alpagrostis (Poaceae, Pooideae, Agrostidinae) from Europe Open
Based on a molecular DNA phylogeny of three plastid ( rpl32-trnK , rps16 intron, and rps16-trnK ) and nuclear ITS regions investigating 32 species of Agrostidinae, we describe two new genera, Agrostula gen. nov. with a single species and A…
View article: A key to the grasses (Poaceae) of Egypt
A key to the grasses (Poaceae) of Egypt Open
A key for identifying 284 native and naturalized Egyptian grass species belonging to 103 genera in 22 tribes and 7 subfamilies is presented. The key is principally based on floral characters of the inflorescence and spikelet. A list and cl…
View article: New combinations and updated descriptions in Podagrostis (Agrostidinae, Poaceae) from the Neotropics and Mexico
New combinations and updated descriptions in Podagrostis (Agrostidinae, Poaceae) from the Neotropics and Mexico Open
Based on morphological study and corroborated by unpublished molecular phylogenetic analyses, five grass species of high-mountain grasslands in Mexico, Central and South America, Agrostis bacillata , A. exserta , A. liebmannii , A. rosei ,…
View article: Eriocoma valdesii, a new species from México (Poaceae, Stipeae)
Eriocoma valdesii, a new species from México (Poaceae, Stipeae) Open
Eriocoma valdesii sp. nov. , is described and illustrated. The new species was found growing on calcareous rocky slopes and hillsides between 1700–2721 m in Coahuila, Nuevo León, San Luis Potosí, and Tamaulipas. The new species is morpholo…
View article: NEW COMBINATIONS AND NEW NAMES IN AMERICAN CINNAGROSTIS, PEYRITSCHIA, AND DESCHAMPSIA, AND THREE NEW GENERA: GREENEOCHLOA, LAEGAARDIA AND PARAMOCHLOA (POEAE, POACEAE)
NEW COMBINATIONS AND NEW NAMES IN AMERICAN CINNAGROSTIS, PEYRITSCHIA, AND DESCHAMPSIA, AND THREE NEW GENERA: GREENEOCHLOA, LAEGAARDIA AND PARAMOCHLOA (POEAE, POACEAE) Open
Based on morphological and molecular evidence we present new combinations or new names for 77 taxa of Cinnagrostis, seven taxa of Deschampsia, and 24 taxa of Peyritschia; and describe three new genera, Greeneochloa P.M. Peterson, Soreng, R…
View article: A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, ×Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa
A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, ×Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa Open
Based on earlier molecular DNA studies we recognize 14 native Stipeae genera and one intergeneric hybrid in North America. We provide descriptions, new combinations, and 10 illustrations for species of Barkworthia gen. nov. , Eriocoma , Ne…
View article: Molecular phylogenetic analysis resolves <i>Trisetum</i> (Poaceae: Pooideae: Koeleriinae) polyphyletic: Evidence for a new genus, <i>Sibirotrisetum</i> and resurrection of <i>Acrospelion</i>
Molecular phylogenetic analysis resolves <i>Trisetum</i> (Poaceae: Pooideae: Koeleriinae) polyphyletic: Evidence for a new genus, <i>Sibirotrisetum</i> and resurrection of <i>Acrospelion</i> Open
To investigate the evolutionary relationships among the species of Trisetum and other members of subtribe Koeleriinae, a phylogeny based on DNA sequences from four gene regions (ITS, rpl32‐trnL spacer, rps16‐trnK spacer, and rps16 intron) …
View article: Páramo Calamagrostis s.l. (Poaceae): An updated list and key to the species known or likely to occur in páramos of NW South America and southern Central America including two new species, one new variety and five new records for Colombia
Páramo Calamagrostis s.l. (Poaceae): An updated list and key to the species known or likely to occur in páramos of NW South America and southern Central America including two new species, one new variety and five new records for Colombia Open
Calamagrostis (syn. Deyeuxia ), as traditionally circumscribed, is one of the most speciose genera from páramo grasslands of northwest South America and southern Central America and often dominates these high-elevation habitats. However, i…
View article: Revision of Muhlenbergia (Poaceae, Chloridoideae, Cynodonteae, Muhlenbergiinae) in Peru: classification, phylogeny, and a new species, M. romaschenkoi
Revision of Muhlenbergia (Poaceae, Chloridoideae, Cynodonteae, Muhlenbergiinae) in Peru: classification, phylogeny, and a new species, M. romaschenkoi Open
A taxonomic treatment, phylogeny based on analysis of six DNA sequence markers (ITS, ndhA intron, rpl32-trnL , rps3 , rps16 intron and rps16-trnK ) and classification of Muhlenbergia for Peru is given. Seventeen species and one presumed hy…
View article: Grasses of Mali
Grasses of Mali Open
A vegetative key, descriptions, and illustrations for the identification of 199 native and naturalized grasses that occur in Mali are presented. In addition, we provide a modern classification, glossary of terms, and indexes to scientific …
View article: Phylogeny of Muhlenbergia subg. Pseudosporobolus, including M. spatha (Poaceae, Chloridoideae, Cynodonteae, Muhlenbergiinae) now found in Zacatecas, Mexico
Phylogeny of Muhlenbergia subg. Pseudosporobolus, including M. spatha (Poaceae, Chloridoideae, Cynodonteae, Muhlenbergiinae) now found in Zacatecas, Mexico Open
Muhlenbergiaspatha , previously known only from near the type locality in San Luis Potosí, is reported from two localities in Zacatecas, Mexico. Historically, botanists have overlooked this diminutive annual. To clarify affinities of M.spa…
View article: Poa laegaardiana, a new species from Ecuador (Poaceae, Pooideae, Poeae, Poinae)
Poa laegaardiana, a new species from Ecuador (Poaceae, Pooideae, Poeae, Poinae) Open
Poalaegaardiana sp. nov. , is described and illustrated. The new species was found growing on sandy, volcanic soil in Festuca - Calamagrostis dominated grasslands southwest of Ambato and 2.2 km from Fecundo Vela in Provincia de Bolivar. Th…
View article: (2620) Proposal to reject the name <i>Poa amabilis (Eragrostis amabilis) (Poaceae)</i>
(2620) Proposal to reject the name <i>Poa amabilis (Eragrostis amabilis) (Poaceae)</i> Open
View article: FESTUCA FLORIBUNDA, A NEW COMBINATION FOR DIELSIOCHLOA (POACEAE: POOIDEAE: POEAE: LOLIODINAE: LOLIINAE)
FESTUCA FLORIBUNDA, A NEW COMBINATION FOR DIELSIOCHLOA (POACEAE: POOIDEAE: POEAE: LOLIODINAE: LOLIINAE) Open
Based on morphological and molecular evidence, Trisetum floribundum [syn. Dielsiochloa floribunda (Pilg.) Pilg.] is transferred to Festuca as Festuca floribunda (Pilg.) P.M. Peterson, Soreng & Romasch., comb. nov. Specimens examined (Argen…
View article: Grasses of Chihuahua, Mexico
Grasses of Chihuahua, Mexico Open
Our revision of the grasses of Chihuahua includes 385 species in 95 genera, 15 subspecies, 29 varieties, and 4 forms. We provide keys for determination, detailed descriptions, nomenclatural synonyms, ecological information on habitat, dist…
View article: Peer Review #1 of "A 250 plastome phylogeny of the grass family (Poaceae): topological support under different data partitions (v0.1)"
Peer Review #1 of "A 250 plastome phylogeny of the grass family (Poaceae): topological support under different data partitions (v0.1)" Open
The systematics of grasses has advanced through applications of plastome phylogenomics, although studies have been largely limited to subfamilies or other subgroups of Poaceae.Here we present a plastome phylogenomic analysis of 250 complet…
View article: A 250 plastome phylogeny of the grass family (Poaceae): topological support under different data partitions
A 250 plastome phylogeny of the grass family (Poaceae): topological support under different data partitions Open
The systematics of grasses has advanced through applications of plastome phylogenomics, although studies have been largely limited to subfamilies or other subgroups of Poaceae. Here we present a plastome phylogenomic analysis of 250 comple…
View article: Peer Review #3 of "A 250 plastome phylogeny of the grass family (Poaceae): topological support under different data partitions (v0.1)"
Peer Review #3 of "A 250 plastome phylogeny of the grass family (Poaceae): topological support under different data partitions (v0.1)" Open
The systematics of grasses has advanced through applications of plastome phylogenomics, although studies have been largely limited to subfamilies or other subgroups of Poaceae.Here we present a plastome phylogenomic analysis of 250 complet…
View article: Peer Review #3 of "A 250 plastome phylogeny of the grass family (Poaceae): topological support under different data partitions (v0.2)"
Peer Review #3 of "A 250 plastome phylogeny of the grass family (Poaceae): topological support under different data partitions (v0.2)" Open
The systematics of grasses has advanced through applications of plastome phylogenomics, although studies have been largely limited to subfamilies or other subgroups of Poaceae.Here we present a plastome phylogenomic analysis of 250 complet…