Ruedas, M; Valverde-Valdés, María Teresa; Zavala-Hurtado, JA
(2006)
We studied three species of columnar cacti in the genus Neobuxbaumia which differ in their degree of rarity: Neobuxbaumia macrocephala (the rarest), Neobuxbaumia tetetzo (intermediate), and Neobuxbaumia mezcalaensis (the ...