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List of works by Robert Raymond Kowal

A New Variety of Senecio (Asteraceae: Senecioneae) from the Sierra de Manantlan, Jalisco, Mexico, with Notes on the S. Roldana Complex

scientific article

Chemotaxonomic Studies in Cnidoscolus (Euphorbiaceae). II. Flavonoids of C. aconitifolius, C. souzae, and C. spinosus

scientific article

Contemporary Plant Systematics

scientific article (publication date: May 1997)

Packera insulae-regalis (Asteraceae, Senecioneae), a new species endemic to Isle Royale, Michigan, U.S.A. ⬇️

scientific article published in September 2011

Senecio anonymus Wood, an earlier name for Senecio smallii Britton

scientific article published in 1973

Shrinking the Violets: Phylogenetic Relationships of Infrageneric Groups in Viola (Violaceae) Based on Internal Transcribed Spacer DNA Sequences

article

Three New Varieties of Packera paupercula (Asteraceae, Senecioneae) in Midwestern and Southeastern North America

scientific article published in 2008

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