Andreasen, Katarina; Baldwin, Bruce G. (2003-03-01). "Reexamination of relationships, habital evolution, and phylogeography of checker mallows (Sidalcea; Malvaceae) based on molecular phylogenetic data". American Journal of Botany. 90 (3): 436–444. doi:10.3732/ajb.90.3.436. ISSN0002-9122. PMID21659137.
Andreasen, Katarina; Baldwin, Bruce G. (2003-03-01). "Reexamination of relationships, habital evolution, and phylogeography of checker mallows (Sidalcea; Malvaceae) based on molecular phylogenetic data". American Journal of Botany. 90 (3): 436–444. doi:10.3732/ajb.90.3.436. ISSN0002-9122. PMID21659137.
Andreasen, Katarina; Baldwin, Bruce G. (2003-03-01). "Reexamination of relationships, habital evolution, and phylogeography of checker mallows (Sidalcea; Malvaceae) based on molecular phylogenetic data". American Journal of Botany. 90 (3): 436–444. doi:10.3732/ajb.90.3.436. ISSN0002-9122. PMID21659137.