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Pentagramma rebmanii

(Winner & M. G. Simpson) Schuettp. & Windham

Rebman's Silverback Fern

G3Vulnerable Found in 4 roadless areas NatureServe Explorer →
G3VulnerableGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.1321609
Element CodePPADI0Q030
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumFilicinophyta
ClassFilicopsida
OrderFilicales
FamilyPteridaceae
GenusPentagramma
Synonyms
Pentagramma triangularis ssp. rebmaniiWinner & M.G. Simpson
Concept Reference
Schuettpelz, E., K.M. Pryer, and M.D. Windham. 2015. A unified approach to taxonomic delimitation in the fern genus Pentagramma (Pteridaceae).Systematic Botany 40(3): 629-644.
Taxonomic Comments
Originally described as a subspecies of Pentagramma triangularis by Winner and Simpson (2007), the circumscription of the genus with six species following Schuettpelz et al. (2015) and the generic placement of this taxon are in accordance with the Pteridophyte Phylogeny Group I (2016).
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-08-07
Change Date2024-08-07
Edition Date2024-08-07
Edition AuthorsTomaino, A. (2024)
Range Extent5000-20,000 square km (about 2000-8000 square miles)
Number of Occurrences21 - 80
Rank Reasons
Pentagramma rebmanii has a restricted distribution in San Diego County, California, and northwestern Baja California.
Range Extent Comments
Pentagramma rebmanii is known only from southwestern California and northwestern Baja California (Schuettpelz et al. 2015). Extent of occurrence is estimated to be about 8,000 sq. km (Schuettpelz et al. 2015).
Occurrences Comments
Pentagramma rebmanii extent of occurrence estimated to be about 8,000 sq. km (Schuettpelz et al. 2015).
Threat Impact Comments
Some populations are situated in protected areas (Schuettpelz et al. 2015).
Ecology & Habitat

Habitat

Habitat is seasonally moist, shaded, rocky slopes (Jepson Flora Project 2024).
Terrestrial Habitats
Forest/Woodland
Other Nations (1)
United StatesN3
ProvinceRankNative
CaliforniaS3Yes
Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (4)
California (4)
AreaForestAcres
Eagle PeakCleveland National Forest6,481
No NameCleveland National Forest4,897
Pine CreekCleveland National Forest503
Sill HillCleveland National Forest5,294
References (4)
  1. Jepson Flora Project (eds.) 2024. Jepson eFlora. Online. Available: https://ucjeps.berkeley.edu/eflora/ (accessed 2024).
  2. Pteridophyte Phylogeny Group I. 2016. A Community-Derived Classification for Extant Lycophytes and Ferns. Journal of Systematics and Evolution 54(6): 563–603.
  3. Schuettpelz, E., K.M. Pryer, and M.D. Windham. 2015. A unified approach to taxonomic delimitation in the fern genus <i>Pentagramma </i>(Pteridaceae).Systematic Botany 40(3): 629-644.
  4. Winner, A.L. and M.G. Simpson. 2007. A new subspecies of <i>Pentagramma triangularis </i>(Pteridaceae). Madroño 54: 345-353.