Iodanthus Torrey & A. Gray. Purple Rocket.
A monotypic genus, a perennial herb, of e. North America.
ID notes: Iodanthus pinnatifidus somewhat resembles Hesperis matronalis in overall appearance, but differs in the following ways: petals 10-13 mm long (vs. 20-25 mm long), siliques 2-4 cm long (vs. 5-10 cm long), pubescence of the lower stem of simple trichomes (vs. branched trichomes).
Ref: Al-Shehbaz (1988a); Al-Shehbaz (2010a) In Flora of North America Editorial Committee (2010); Rollins (1993). Show full citations.
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© Paul Marcum | 
© Paul Marcum |