Asplenium resiliens Blackstemmed spleenwort

Epithet means "resilient, springy."

Evergreen, 6 to 12 in. (15 to 30 cm). Zones 6 to 9. Apogamous.

description: The rhizome is ascending. Short stipes are shiny black and one-fourth the length of the frond or usually shorter. Linear blades are once-pinnate with a sharp auricle that does not cross the rachis. Up to 40 pairs of opposite pinnae tend towards bluish green. Sori and indusia are two to five pairs per pinna.

range and habitat: The black-stemmed spleenwort is found on limestone rocks and in crevices from Delaware south and west to Texas in the United States, as well as the caribbean, Mexico, and down into South America.

culture and comments: A challenging species for the determined collector, this fern will establish, albeit reluctantly, in limestone-improved garden sites and may even last a year or two. Give it a top dressing of marble chips. The opposite pinnae help to distinguish it from Asplenium platyneuron.

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