Home/Species/ Shasta Maidenhair Fern

Adiantum shastense

Huiet & A.R. Sm.

Shasta Maidenhair Fern

G3Vulnerable Found in 5 roadless areas NatureServe Explorer →

G3VulnerableGlobal Rank

MediumThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.960320

Element CodePPADI030W0

Record TypeSPECIES

ClassificationSpecies

Classification StatusProvisional

Name CategoryVascular Plant

Endemicendemic to a single nation

KingdomPlantae

PhylumFilicinophyta

ClassFilicopsida

OrderFilicales

FamilyPteridaceae

GenusAdiantum

Concept Reference

Huiet, L., M. Lenz, J.K. Nelson, K.M. Pryer, and A.R. Smith. 2015. Adianitum shastense, a new species of maidenhair fern from California. PhytoKeys 53: 73-81.

Conservation Status

Rank MethodLegacy Rank calculation - Excel v3.1x

Review Date2016-02-23

Change Date2016-02-23

Edition Date2016-02-23

Edition AuthorsTomaino, A.

Threat ImpactMedium

Range Extent5000-20,000 square km (about 2000-8000 square miles)

Number of Occurrences6 - 20

Rank Reasons

A narrow endemic known from the area surrounding Shasta Lake in northern California and one collection from southwest Oregon.

Range Extent Comments

Known only from Shasta County, California and southwest Oregon (Huiet et al. 2015; S. Vrilakas, pers. comm., 2015).

Ecology & Habitat

Habitat

"It is found in mesic hardwood-conifer forests, on the forest floor as well as on limestone and metasedimentary rock outcrops, including rocky road cuts, most often in shade and with northern or eastern exposures" (Huiet et al. 2015). "Sometimes, but not always, associated with limestone" (Huiet et al. 2015).

Terrestrial Habitats

Forest/WoodlandForest - MixedBare rock/talus/scree

Other Nations (1)

United StatesN3

Province	Rank	Native
California	S3	Yes

Plant Characteristics

Economic Value (Genus)Yes

Roadless Areas (5)

California (5)

Area	Forest	Acres
Backbone	Shasta-Trinity National Forest	11,466
Devils Rock	Shasta-Trinity National Forest	16,209
East Girard	Shasta-Trinity National Forest	27,894
Kettle Mtn.	Shasta-Trinity National Forest	4,589
West Girard	Shasta-Trinity National Forest	37,516

References (1)

Huiet, L., M. Lenz, J.K. Nelson, K.M. Pryer, and A.R. Smith. 2015. Adianitum shastense, a new species of maidenhair fern from California. PhytoKeys 53: 73-81.