References for Orobanchaceae

Achey, D.M. 1933. A revision of the section Gymnocaulis of the genus Orobanche. Bull. Torrey Bot. Club 60:441-451.
Gilkey, H.M. 1945. Northwestern American plants. Oregon State College, Corvallis, OR. 84 p.
Heckard, L.R. 1973. A taxonomic reinterpretation of the Orobanche californica complex. Madrono 22:41-70.
Heckard, L.R., and T.I. Chuang. 1975. Chromosome numbers and polyploidy in Orobanche (Orobanchaceae). Brittonia 27:179-186.
Jensen, H.W. 1951. The normal and parthenogenetic forms of Orobanche uniflora, in the eastern US. Cellule 54:133-142.
Olsen, S., and I.D. Olsen. 1981. Observation on the biology of Boschniakia hookeri (Orobanchaceae). Nordic J. Bot. 1:585-594.

Source for the Reference Lists

George W. Douglas, Del Meidinger and Jim Pojar. 1998-2002. Illustrated Flora of British Columbia.