Verbatim text: Lack, H. W. 1975. A note on Helminthotheca Zinn (Compositae). Taxon 24: 111–112.
Author: Lack, H.W.
Year: 1975
Title: A note on Helminthotheca Zinn (Compositae)
Journal: Taxon
Volume: 24
Pages: 111–112
PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/1219006