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Asplenium ×boydstoniae
Asplenium × boydstoniae, commonly known as Boydston's spleenwort, is a rare, sterile, hybrid fern. It is formed by the crossing of Tutwiler's spleenwort (A. tutwilerae) with ebony spleenwort (A. platyneuron). The hybrid was produced in culture in 1954. It was not discovered in the wild until 1971, when it was found by Kerry S. Walter at Havana Glen, Alabama, the only known wild site for Tutwiler's spleenwort. Walter named it for Kathryn E. Boydston, an expert in fern culture. Except for the tip of its leaf blade, it largely resembles its ebony spleenwort parent.
Asplenium × boydstoniae was produced in culture in the laboratory before it was ever discovered in the wild, and was probably the first fern to be so described. It is known in the wild only from Havana Glen, Hale County, Alabama. The type specimens were found growing on a moss- and crustose lichen-covered rock. The local rock is a conglomerate, with siliceous pebbles cemented in sandstone of the Pottsville Formation, which contains iron and small amounts of calcium. The soil pH is slightly acid (5 to 6).
Black spleenwort · Asplenium aequibasis · Egyptian spleenwort · Asplenium anceps · Bird’s Nest Fern · Asplenium appendiculatum · Asplenium arcanum · Fern · Asplenium attenuatum · Eared Spleenwort · Bird's Nest Fern · Azorean Spleenwort
Text excerpted from the Wikipedia article Asplenium × boydstoniae by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
