Mexico 2013 Flora de Durango y Jalisco

Voucher:SG 511

Polypodium madrense J. Sm.

Location:Durango, Espinazo del Diablo.
Coordinates: 23°39'33" N, 105°44'18" W Alt: 2503m

Fern. Blade pinnatifid, pinnae perpendicular to rachis, dark green.
Open Pinus and Quercus forest. Growing on boulders with moss and leaf litter.

Identification Notes: Verified with Mickel, J.T., Pteridophytes of Mexico, 2004. Scales on rhizome with black midrib with fimbriate margin and acicular apex. Hydathode pits often in two rows at the base of pinnae adaxially. Sori circular.

González, S. #511      21 June 2013

morphological details

rhizome rhizome frond frond frond frond

scales scales

adaxial leaf surface adaxial leaf surface

sorus sorus

abaxial leaf surface abaxial leaf surface sori sori sori sori
field picture
Herbarium voucher
Herbarium voucher

Other field pictures