|Downy yellow violet|
Viola pubescens, commonly called the downy yellow violet, is a plant species of the genus Viola and is classified within the subsection Nudicaules of section Chamaemelanium. It is a widespread North American violet found in rich, mesic woodlands, and sometimes in meadows, from Minnesota and Ontario east to Nova Scotia and south to Virginia. V. pubescens produces two different types of flowers during the season, including chasmogamous flowers in the early spring and cleistogamous flowers summer through fall.
Similar-looking species include the round-leaved yellow violet (Viola rotundifolia). The two species can be differentiated by leaf shape and leaf margin. Additionally, V. pubescens has both basal and cauline leaves, while V. rotundifolia has only basal leaves.
- Ballard, H.E., Jr.; Sytsma, K.J.; Kowal, R. (October 1998). "Shrinking the violets: Phylogenetic relationships of infrageneric groups in Viola (Violaceae) based on Internal Transcribed Spacer DNA sequences". Systematic Botany. 23 (4): 439. doi:10.2307/2419376. JSTOR 2419376.
- Gleason, H.A.; Cronquist, A. (1991). Manual of the Vascular Plants of Northeastern United States and Adjacent Canada. Bronx, NY: The New York Botanical Garden Press. p. 162. ISBN 978-0893273651.
- Ballard, H.E.; Cortes-Palomec, A.C.; Feng, M.; Wang, Y.; Wyatt, S.E. (2011). "The chasmogamous/cleistogamous mixed breeding system, a widespread and evolutionarily successful reproductive strategy in angiosperms.". Frontiers in biodiversity studies. Rajasthan, India: Agrobios: Bioscience Publications. pp. 16–41.
- "Viola rotundifolia". Connecticut Plants. Connecticut Botanical Society. 2015.
Media related to Viola pubescens at Wikimedia Commons
- Viola pubescens Photos, drawings, description from Nature Manitoba
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