Polypodium arcanum var. septentrionale Mickel
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Authority
Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.
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Family
Polypodiaceae
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Scientific Name
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Description
Description - Var. septentrionale differs from var. arcanum in having abaxial laminar hairs less than 0.1 mm, generally (5-)9-15 pinna pairs (vs. (3-)4-8(-10)), and a more northern distribution; 2n=74. From P. colpodes, var. septentrionale differs in the stramineous stipes and rachises.
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Discussion
Type. Mexico. Queretaro: Mpio. Landa, 2.5 km al suroeste de El Aguacate, Rubio 1243 (holotype NY!).
A var. arcano laminis pilosis necnon distributione boreali diversa. (L., septentrionalis, northern, alluding to the more northern distribution of this variety).
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Distribution
Epiphytic or occasionally on rocks in pine-oak or Liquidambar forests; 1400-1730 m. Mexico.
Mexico North America|