Monographs Details: Anogramma
Authority: Mickel, John T. & Beitel, Joseph M. 1988. Pteridophyte Flora of Oaxaca, Mexico. Mem. New York Bot. Gard. 46: 1-580.
Description:Genus Description - Terrestrial, or less commonly epipetric; rhizome erect, sparsely scaly to hairy; fronds small, clumped; stipe slender, green to stramineous; blade 2-4 times pinnate, glabrous (except at base), veins free; sporangia along the veins on terminal segments; indusium and paraphyses lacking; spores tetrahedral-globose, tan to dark brown; gametophytes said to be perennial, at least in A. leptophylla, with annual sporophytes.
Discussion:Type: Anogramma leptophylla (Linnaeus) Link [=Poly-podium leptophyllum Linnaeus].
There are perhaps six species in the genus, but their taxonomy is still not entirely worked out. The type species, Anogramma leptophylla, is cosmopolitan, but the others are rather restricted in range. Four are found in America, one is African, and one is on Ascension Island. There may be an undescribed species from western Mexico, and the boundaries between A. leptophylla, A. guatemalensis, and A. chaerophylla are obscure at best. It is curious that the rare A. chaerophylla grows with A. leptophylla in Chiapas (A. R. Smith, 1981) and the one collection in Oaxaca is a mixed collection with A. leptophylla. Further study is needed on the intraspecific and intrapopulational variation. Anogramma is closely related to Pityrogramma and possibly Eriosorus (Tryon & Tryon, 1982), differing largely in size, texture, and lack of farina.
References: Baroutsis, J. G. & G. J. Gastony. 1978. Chromosome numbers in the fern genus Anogramma. 2. Amer. Fern J. 68: 3-6; Gastony, G. J. & J. G. Baroutsis. 1975. Chromosome numbers in the genus Anogramma. Amer. Fem J. 65: 71-75; Tryon, R. 1962. Taxonomic fem notes. II. Pityrogramma (including Trismeria) and Anogramma. Contr. Gray Herb. 189: 52-76.