Cucurbita palmata S. Wats.
| Life-zone indicators in California Harvey Monroe Hall and Joseph Grinnell (1919) Proceedings of the California Academy of Sciences 9: 37-67 | |
| A revision of the bees of the genus Melissodes in North and Central America. Parts I., II. (Hymenoptera, Apidae) (1956) Kansas University Science Bulletin 37: 911-1194 |