Asplenium adiantum-nigrum is a common species of
fern known by the common name black spleenwort.[3] It is found mostly in
Africa,
Europe, and
Eurasia, but is also native to a few locales in
Mexico and the
United States.[3][4]
Description
This
spleenwort has thick, triangular leaf blades up to 10 centimeters long which are divided into several subdivided segments. It is borne on a reddish green
petiole and the
rachis is shiny and slightly hairy. The undersides of each leaf segment have one or more
sori[4] arranged in chains.[5]
A chloroplast phylogeny verified the
allopolyploid origin of A. adiantum-nigrum, with A. cuneifolium supplying the paternal genome and A. onopteris the maternal genome.[7]
^
abcWagner, Warren H. Jr.; Moran, Robbin C.;
Werth, Charles R. (1993).
"Asplenium adiantum-nigrum". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico. Vol. 2: Pteridophytes and Gymnosperms. New York and Oxford: Oxford University Press.
^
abEsser, Lora L. 1994.
Asplenium adiantum-nigrum. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer).