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- Images (5)
- References (3)
- Collections (8)
- Specimens (8)
- Distributions (2)
- Chromosome Counts (11)



- - ; ; (LINN-955.14) LT designated by Babcock, Univ. Calif. Publ. Bot. 22: 437 (1947); CT proposed by Jarvis, Taxon 41: 561 (1992)
- rough hawk's-beard (English, United States)
Brako, L., A.Y. Rossman & D.F. Farr. 1995. Sci. Comm. Names 1–294.