Reference:Horn1973a
Verbatim text: Horn, G. S. 1973. The taxonomic status of Pentachaeta and Chaetopappa with a revision of Pentachaeta. Univ. of Calif. Publ. Bot. 65: 1–41.
Author: Horn, G.S.
Year: 1973
Title: The taxonomic status of Pentachaeta and Chaetopappa with a revision of Pentachaeta
Journal: Univ. of Calif. Publ. Bot
Volume: 65
Pages: 1–41