Murphy; Launer, Ehrlich (1983). "The Role of Adult Feeding in Egg Production and Population Dynamics of the Checkerspot Butterfly Euphydryas editha". Oecologia. 56 (2): 257–263. Bibcode:1983Oecol..56..257M. doi:10.1007/bf00379699. PMID28310203.
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Murphy; Launer, Ehrlich (1983). "The Role of Adult Feeding in Egg Production and Population Dynamics of the Checkerspot Butterfly Euphydryas editha". Oecologia. 56 (2): 257–263. Bibcode:1983Oecol..56..257M. doi:10.1007/bf00379699. PMID28310203.
kew.org
powo.science.kew.org
"Orthocarpus Nutt."Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2022-03-21.
nih.gov
pubmed.ncbi.nlm.nih.gov
Murphy; Launer, Ehrlich (1983). "The Role of Adult Feeding in Egg Production and Population Dynamics of the Checkerspot Butterfly Euphydryas editha". Oecologia. 56 (2): 257–263. Bibcode:1983Oecol..56..257M. doi:10.1007/bf00379699. PMID28310203.