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PhytoKeys. 2015 Jul 21;(53):73-81. doi: 10.3897/phytokeys.53.5151. eCollection 2015.

Adiantumshastense, a new species of maidenhair fern from California.

Author information

1
Department of Biology, Duke University, Durham, NC 27707.
2
USDA Forest Service, Shasta-Trinity National Forest, 3644 Avtech Parkway, Redding, CA 96002.
3
1001 Valley Life Sciences Building, # 2465, University Herbarium, University of California, Berkeley, CA 94720-2465.

Abstract

A new species of Adiantum is described from California. This species is endemic to northern California and is currently known only from Shasta County. We describe its discovery after first being collected over a century ago and distinguish it from Adiantumjordanii and Adiantumcapillus-veneris. It is evergreen and is sometimes, but not always, associated with limestone. The range of Adiantumshastense Huiet & A.R.Sm., sp. nov., is similar to several other Shasta County endemics that occur in the mesic forests of the Eastern Klamath Range, close to Shasta Lake, on limestone and metasedimentary substrates.

KEYWORDS:

Shasta Lake; Shasta snow wreath; maidenhair; new species

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