RT Journal Article
SR Electronic
T1 Seed production and propagation of northern bog violet (<em>Viola nephrophylla</em>) for Nokomis fritillary (<em>Speyeria nokomis</em>) butterfly habitat restoration
JF Native Plants Journal
JO NATIVE PLANTS JOURNAL
FD University of Wisconsin Press
SP 130
OP 138
DO 10.3368/npj.23.1.130
VO 23
IS 1
A1 Tilley, Derek
A1 Spencer, James
A1 Wolf, Mary
YR 2022
UL http://npj.uwpress.org/content/23/1/130.abstract
AB The Nokomis fritillary (Speyeria nokomis Edwards [Lepidoptera: Nymphalidae]) is a North American butterfly with unique dietary and reproduction requirements. The only confirmed food source of the Nokomis fritillary larva is the northern bog violet (Viola nephrophylla Greene [Violaceae]), making seed and plant production of this plant critical to habitat restoration. Fifty mother plants established from seed in spring produced 10,000 seeds by cleistogamy during the summer. Stratification plus soaking in oxygenated water yielded mixed results on germination. Maximum germination (33%) was observed with 60 d stratification on blotter paper. Attempts to produce plants through asexual propagation were unsuccessful. Anecdotal observations suggest that improved seed cleaning and exposure to freeze/thaw cycles may improve seed germination.