Colors

Data mode

Account

Login
Sign up

References

Urbatsch, L.E., and P.B. Cox. 2006a. Rudbeckia. In Flora of North America Editorial Committee. 2006c. Flora of North America north of Mexico. Volume 21, Magnoliophyta: Asteridae, part 6: Asteraceae, part 3. Oxford Univ. Press, New York, NY. 616 pp.

Cite as...