Verbatim text: Davis, W. S. 1997. The systematics of annual species of Malacothrix (Asteraceae: Lactuceae) endemic to the California Islands. Madroño 44: 223–244.
Author: Davis, W.S.
Year: 1997
Title: The systematics of annual species of Malacothrix (Asteraceae: Lactuceae) endemic to the California Islands
Journal: Madroño
Volume: 44
Pages: 223–244