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Heterotheca oregona
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Heterotheca oregona var. scaberrima
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Heterotheca
oregona
var.
scaberrima
(A. Gray) Semple
Published In:
Brittonia 39(3): 383. 1987. (
Brittonia
)
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Heterotheca oregona var. scaberrima (A. Gray) Semple
Semple, J. C., C. Leeder, C. Leuty & L. Gray. 1988. Heterotheca sect. Ammodia (Compositae: Astereae): a multivariate study of H. oregona and specimens of Brewer's (golden) aster. Syst. Bot. 13: 547–558.
88-89
9II
Heterotheca oregona var. scaberrima (A. Gray) Semple
Semple, J. C., C. Xiang, J. Zhang, M. Horsburgh & R. Cook. 2001. Chromosme number determinations in Fam. Compositae, tribe Astereae. VI. Western North American taxa and comments on generic treatments of North American asters. Rhodora 103: 202–218.
01-03
9II
