A Eurasian sp. with yellow (and red-dotted) fls 8-13 mm, the short spur prolonged straight back from the saccate sep, is sparingly intr. in N.S. and P.E.I.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.