Ceratozamia zoquorum

1. 1.

KEY SEPARATING CERATOZAMIA ZOQUENSIS FROM C. MIQUELIANA AND C. EURYPHYLLIDIA

Leaflets oblong to oblanceolate, coriaceous; female cones decumbent at maturity.
Leaflets 3.2-6.5cm wide
C. zoquensis Leaflets obovate to widely oblanceolate, translucent, papiraceous to membranaceous; female cones erect at maturity.
  1. 1.Leaflets translucent, 9-16 cm wide
    C. euryphyllidia
  2. 2.Leaflets papiraceous to membranaceous, 4-6.4 cm wide
    C. miqueliana
 

Ceratozamia zoquorum is a new species described in 2001 and occurring endemically in the Mexican state of Chiapas.  Plants grow on steep slopes under closed canopy of tropical rainforest.  Ceratozamia zoquorum is closest to euryphyllidia and miqueliana.