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For Pseudognaphalium

Anderberg, A.A. 1991. Taxonomy and phylogeny of the tribe Gnaphalieae (Asteraceae). Opera Botanica 104.

Arriagada, J.E. 1998. The genera of Inuleae (Compositae; Asteraceae) in the southeastern United States. Harvard Papers in Botany 3: 1-48.

Cronquist, A. 1980. Asteraceae, Volume I, Vascular flora of the Southeastern United States. University of North Carolina Press, Chapel Hill, N.C.

Freire, S.E., J.L. Villaseñor, C. Monti, N.D. Bayón, and M.A. Migoya. 2022. Taxonomic revision of Pseudognaphalium (Asteraceae, Gnaphalieae) from North America. Ann. Mo. Bot. Gard. 107(1): 314-404.

Galbany-Casals, M., N. Garcia-Jacas, A. Susanna, L. Sáez, and C. Benedí. 2004. Phylogenetic relationships in the Mediterranean Helichrysum (Asteraceae, Gnaphalieae) based on nuclear rDNA ITS sequence data. Australian Syst. Bot. 17(3): 241-253.

Mahler, W.F. 1975. Typification and distribution of the varieties of Gnaphalium helleri Britton (Compositae-Inuleae). Sida 6: 30-32.

Nesom, G.L. 2001a. Notes on variation in Pseudognaphalium obtusifolium (Asteraceae: Gnaphalieae). Sida 19: 615-619.

Nesom, G.L. 2006k. Pseudognaphalium. In Flora of North America Editorial Committee. 2006a. Flora of North America north of Mexico. Volume 19, Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford Univ. Press, New York, NY. 579 pp.

Nesom, G.L. 2024a. Typification of Gnaphalium obtusifolium L. (Asteraceae: Gnaphalieae). Phytoneuron 2024-01: 1-16. Published 15 January 2024. ISSN 2153 733X

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