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Asplenium trichomanes
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Maidenhair Spleenwort
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Asplenium trichomanes

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About Maidenhair Spleenwort (Asplenium trichomanes) Asplenium trichomanes (commonly known as Maidenhair Spleenwort) is a small fern in the spleenwort genus Asplenium. It is a widespread and common species, occurring almost worldwide in a variety of rocky habitats. It is a variable fern with several subspecies. It grows in tufts from a short rhizome. The fronds are long and narrow, gradually tapering towards the tip. They are simply divided into small, yellow-green to dark-green pinnae. The stipe and rachis of the frond are dark all along their length. The fronds can reach 40 centimeter in length but are more commonly 8-20 centimeter. They bear long, narrow sori which contain the spores.
Plant Description
Plant Type

Max. Height
9.6 in (24.4 cm)

Native Status

Natural Setting
Site Type
On rocks

Part Shade

Elevation ?
175' - 2967'

Annual Precip. ?
11.1" - 28.0"

Summer Precip. ?
0.21" - 1.30"

Coldest Month ?
39.6° F - 54.1° F

Hottest Month ?
66.3° F - 72.8° F

Humidity ?
1.37 vpd - 18.11 vpd

Landscaping Information
Nursery Availability
Rarely Available


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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