8 articles by this author
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Research Article
A phylogeny of species near Agrostis supporting the recognition of two new genera, Agrostula and Alpagrostis (Poaceae, Pooideae, Agrostidinae) from Europe
    Paul M. Peterson,     Steven P. Sylvester, Konstantin Romaschenko,     Robert J. Soreng, Patricia Barberá,     Alejandro Quintanar, Carlos Aedo
10.3897/phytokeys.167.55171
 20-11-2020
 Unique: 3288 | Total: 4976  | Access Period:
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 57-82
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Research Article
Re-instatement of Sorbus harrowiana (Rosaceae), based on morphometric analysis
    Meng Li,     Steven P. Sylvester, Zhang-Pei Wang, Yi-Da Pei, Xin-Fen Gao, Yuan Zhao, Wen-Qi Jiang
10.3897/phytokeys.166.57672
 29-10-2020
 Unique: 2602 | Total: 3750  | Access Period:
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 29-39
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Research Article
New records and key to Poa (Pooideae, Poaceae) from the Flora of Southern Africa region and notes on taxa including a diclinous breeding system in Poa binata
    Robert J. Soreng,     Steven P. Sylvester,     Mitsy D.P.V. Sylvester,     Vincent Ralph Clark
10.3897/phytokeys.165.55948
 28-10-2020
 Unique: 2553 | Total: 3723  | Access Period:
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 27-50
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Research Article
Festuca drakensbergensis (Poaceae): A common new species in the F. caprina complex from the Drakensberg Mountain Centre of Floristic Endemism, southern Africa, with key and notes on taxa in the complex including the overlooked F. exaristata
    Steven P. Sylvester,     Robert J. Soreng,     Mitsy D. P. V. Sylvester,     Vincent Ralph Clark
10.3897/phytokeys.162.55550
 07-10-2020
 Unique: 3031 | Total: 4358  | Access Period:
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 45-69
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Research Article
Agrostis and Podagrostis (Agrostidinae, Poaceae) from páramos of Boyacá, Colombia: synoptic taxonomy including a key to Colombian species
    Steven P. Sylvester, Lia E. Cuta-Alarcon, William J. Bravo-Pedraza,     Robert J. Soreng
10.3897/phytokeys.151.50538
 24-06-2020
 Unique: 3216 | Total: 5077  | Access Period:
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 107-160
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Research Article
New combinations and updated descriptions in Podagrostis (Agrostidinae, Poaceae) from the Neotropics and Mexico
    Steven P. Sylvester,     Paul M. Peterson, Konstantin Romaschenko, William J. Bravo-Pedraza, Lia E. Cuta-Alarcon,     Robert J. Soreng
10.3897/phytokeys.148.50042
 26-05-2020
 Unique: 2722 | Total: 4089  | Access Period:
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 21-50
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Research 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
    Steven P. Sylvester,     Robert J. Soreng, William J. Bravo-Pedraza, Lia E. Cuta-Alarcon, Diego Giraldo-Cañas, Jose Aguilar-Cano,     Paul M. Peterson
10.3897/phytokeys.122.33032
 28-05-2019
 Unique: 4523 | Total: 8196  | Access Period:
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 29-78
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Checklist
An updated checklist and key to the open-panicled species of Poa L. (Poaceae) in Peru including three new species, Poa ramoniana, Poa tayacajaensis, and Poa urubambensis
    Steven P. Sylvester,     Robert J. Soreng,     Paul M. Peterson,     Mitsy D.P.V. Sylvester
10.3897/phytokeys.65.7024
 30-06-2016
 Unique: 4466 | Total: 7825  | Access Period:
 Reprint: € 13,00
 57-90
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