A revision and amplification of Pediocactus
Subtitle: I-[IV]
By: by Lyman Benson
Published: 1961
Language: eng
Notes: Reprined from: Cactus & Succulent Journal. I. 1971. 33: 49-54 ; II. 1962. 34: 17-19 ; III. 1962. 34: 57-61 ; IV. 1962. 34: 163-168.