Literature references
1 literature reference for Cylindropuntia echinocarpa (Engelm. & J.M. Bigelow) F.M. Knuth:
Author: | Flora of North America Editorial Committee, eds. |
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Year: | 2003 |
Title: | – |
Source: | Flora of North America North of Mexico, vol. 4: Magnoliophyta: Caryophyllidae, part. 1, The volumes are also reproduced online (http://www.fna.org/) |