Details for: Dioon tomasellii var. sonorense
Search restricted to Hill, K. D. & Stevenson, D. W. 2004: Extract from The Cycad Pages. RBG Sydney.   Check for other Sources using this name

Source: Hill, K. D. & Stevenson, D. W. 2004: Extract from The Cycad Pages. RBG Sydney. [IOPI preferred view]

Name: Dioon tomasellii var. sonorense De Luca, Sabato & Vázq. Torres
Nomencl. ref. Brittonia 36: 226-227 (1984)
Rank: Varietas
Status: SYNONYM
Synonym of: Dioon sonorense (De Luca, Sabato & Vázq. Torres) Chemnick & T.J. G
 
Type:Mexico, Sonora, Distrito de Alamos, Barranco Saucito, Sierra de Alamos, 15 Jun 1979, M. Vazquez Torres 2308 (holo NAP, iso ENCB, MEXU, NY, XALUV).