Robert Raymond Kowal

Robert Raymond Kowal (1939–2015), U.S. American biostatistician and botanist.

IPNI standard form: R.R.Kowal

(List may be incomplete)

• 1 taxon names authored by Robert Raymond Kowal

(List may be incomplete)

• Kowal, R.R. & Barkley, T.M. 1973. Senecio anonymus Wood, an earlier name for Senecio smallii Britton. Rhodora 75(802): 211–219. JSTOR BHL Reference page. 
• Kowal, R.R. 1975. Systematics of Senecio aureus and allied species of the Gaspé Peninsula, Quebec. Memoirs of the Torrey Botanical Club 23(2): 1–113. Reference page. 
• Kowal, R.R., Mori, S.A., & Kallunki, J.A. 1977. Chromosome numbers of Panamanian Lecythidaceae and their use in subfamilial classification. Brittonia 29: 399–410. doi Reference page. 
• Kolterman, D.A., Breckon, G.J., & Kowal, R.R. 1984. Chemotaxonomic studies in Cnidoscolus (Euphorbiaceae). II. Flavonoids of C. aconitifolius, C. souzae, and C. spinosus. Systematic Botany 9(1): 22–32. jstor Reference page. 
• Kowal, R.R. 1989. Chromosome numbers of Asteranthos and the putatively related Lecythidaceae. Brittonia 41(2): 131–135. doi Reference page. 
• Kowal, R.R. 1991. A new variety of Senecio (Asteraceae: Senecioneae) from the Sierra de Manantlán, Jalisco, Mexico, with notes on the S. roldana complex. Brittonia 43: 102–115. DOI: 10.2307/2807303 Reference page. 
• Knox, E.B. & Kowal, R.R. 1993. Chromosome numbers of the East African giant senecios and giant Lobelias and their evolutionary significance. American Journal of Botany 80(7): 847–853. doi Reference page. 
• Ballard, H.E., Jr., Sytsma, K.J., & Kowal, R.R. 1998. Shrinking the violets: Phylogenetic relationships of infrageneric groups in Viola (Violaceae) based on internal transcribed spacer DNA sequences. Systematic Botany 23(4): 439–458. jstor Reference page. 
• Mahoney, A.M., Kong, V.W., & Kowal, R.R. 2002. Documented chromosome numbers 2002:3. Chromosome counts for Packera paupercula var. appalachiana (Asteraceae: Senecioneae). Sida 20(2): 605–610. JSTOR BHL Reference page. 
• Kowal, R.R. 2007. Keys to the Asteraceae of Wisconsin. University of Wisconsin Herbarium Reference page. 
• Mahoney, A.M. & Kowal, R.R. 2008. Three new varieties of Packera paupercula (Asteraceae, Senecioneae) in midwestern and southeastern North America. Novon 18(2): 220–228. DOI: 10.3417/2006016 JSTOR BHL Reference page. 
• Kowal, R.R, Judziewicz, E.J., & Edwards, J. 2011. Packera insulae-regalis (Asteraceae, Senecioneae), a new species endemic to Isle Royale, Michigan, U.S.A. Brittonia 63, 343. doi Reference page. 
• Kowal, R.R., Mahoney, A.M., Weakley, A., & Estes, D. 2015. Validation and lectotypification of Packera crawfordii (Asteraceae). Phytoneuron 2015–18:1–2. [e-published.] Reference page. 
• Kowal, R.R. & Mahoney, A.M. 2016. Comments on the status of Packera crawfordii (Asteraceae, Senecioneae), a neglected species of the southeastern United States. Brittonia 68(1): 74–82. doi Reference page.