Anemia semihirsuta Mickel
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Authority
Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
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Family
Anemiaceae
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Scientific Name
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Description
Species Description - Rhizome horizontal, compact, short-creeping, 4-7 mm diam.; rhizome hairs orange; fronds erect, 10-30 cm tall; stipe grooved on upper surface, 6-18 cm long, ca. ½ the frond length, ca. 1 mm diam., stramineous, hirsute; blade narrowly oblong or narrowly deltate, once-pinnate, the lower 1-5 pairs of pinnae incised, chartaceous, hirsute; pinnae 5-10 pairs, opposite to subopposite, oblong, cuneate at base, often excavate on lower margin, apex obtuse, margin minutely denticulate; veins mostly free, with 0-2(-6) anastomoses per pinna; fertile pinnae approximate to the sterile pinnae, usually somewhat surpassing the sterile blade in height; spores tetrahedral-globose, with rugulose, narrow, distant ridges; chromosome number n = 114.
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Discussion
Type. Mexico. Oaxaca: Dist. Villa Alta, trail from Villa Alta to airstrip, 4000' [1220 m], 5 Aug 1962, Mickel 1120 (NY!). This species is apparently of hybrid origin between A. hirsuta and a diploid race of A. phyllitidis. See Mickel (1982) for details. It may well be a triploid apomict rather than a sexual hexaploid, but at this time we are uncertain.
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Distribution
Uncommon on disturbed, partially shaded banks in mesic forests at middle elevation; Mixe, Pochutla, Villa Alta; 900-1600 m. Mexico (Oax).
Mexico North America|