Anemia
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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
Anemiaceae
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Scientific Name
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Description
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Genus Description - Rhizomes short-creeping, horizontal or ascending, clothed with dark or orange hairs; fronds erect, rarely forming a flat rosette, 1–3-pinnate, generally anadromous, rarely catadromous, papyraceous to coriaceous; veins free or netted; fertile pinnae held erect, rarely horizontally or at an angle; sporangia restricted to the erect, dissected, lowermost pair of pinnae just below the sterile part of the blade (hemidimorphic), rarely fronds wholly dimorphic (holodimorphic) with sporangia borne on entire blade; sporangia in two rows on ultimate segments of fertile pinnae, sessile, subglobose to oval; annuli subapical; spores tetrahedral-globose, striate with parallel smooth or spiny ridges; x=38.
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Discussion
Type: Anemia phyllitidis (L.) Sw. [-/= Osmunda phyllitidis L.].
Anemia includes about 120 species, mostly in Latin America, ten in Africa, one in southern India. The genus is most abundant in Brazil (70 species), with a secondary center in Mexico (20 species). Anemia includes subg. Anemiorrhiza (calciphiles of the Caribbean basin), and the more widely distributed subg. Anemia. The latter includes subg. Coptophyllum, formerly treated as distinct, but molecular data (Skog et al., 2002) have shown it to be inseparable. Some species of Anemia hybridize freely and frequently. The genus Anemia is most closely related to the African genus Mohria and more distantly to Schizaea, Actinostachys, and Lygodium, together comprising the family Schizaeaceae (Skog, 2001; Wikstrom et al., 2002).