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John Skvarla
Oklahoma University
Norman, OK, United States of America
4 articles by this author
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Research Article
Vernonieae (Asteraceae) of southern Africa: A generic disposition of the species and a study of their pollen
Harold Robinson, John J. Skvarla,     Vicki A. Funk
10.3897/phytokeys.60.6734
 11-02-2016
 Unique: 5303 | Total: 8952  | Access Period:
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 49-126
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Research Article
Two new genera, Hoffmannanthus and Jeffreycia, mostly from East Africa (Erlangeinae, Vernonieae, Asteraceae)
Harold Robinson, Stirling Keeley, John Skvarla, Raymund Chan
10.3897/phytokeys.39.7624
 18-07-2014
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 49-64
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Research Article
Pantoporate pollen in the Asteraceae (Vernonieae)
Harold Robinson, John Skvarla
10.3897/phytokeys.38.7495
 19-05-2014
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 1-13
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Research Article
Lettowia, a new genus of Vernonieae from East Africa (Asteraceae)
Harold Robinson, John Skvarla
10.3897/phytokeys.25.5556
 19-07-2013
 Unique: 4391 | Total: 7348  | Access Period:
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 47-53
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