References

For Laphangium

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

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

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. Google Scholar

Greuter, W. 2003b. The Euro+Med treatment of Cardueae (Compositae) – generic concepts and required new names. Notulae ad floram euro-mediterraneam pertinentes No. 3. Willdenowia 33: 49-61. Google Scholar

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

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. Google Scholar