JURGENSENII ssp. ATTENUATUM (Hemsley) Moran, 1998

Distribution : Central Mexico

Differs from ssp. jurgensenii :

Leaves strongly ascending, imbricate, narrowly triangular-ovate or upper leaves triangular-lanceolate, subterete, sharply acute or subacuminate.

Flowers : Sepals slenderly acute or subacuminate, petals narrowly acute.

Cytology : n = 23

Best distinguished from ssp. jurgensenii on accout of the strongly ascending and imbricate leaves.