Roadless Areas
Home/Species/ Blakey's Spineflower

Chorizanthe blakleyi

Hardham

Blakey's Spineflower

G2Imperiled Found in 1 roadless area NatureServe Explorer →
G2ImperiledGlobal Rank
Medium - lowThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.149401
Element CodePDPGN04030
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderPolygonales
FamilyPolygonaceae
GenusChorizanthe
Concept Reference
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Rank MethodLegacy Rank calculation - Excel v3.1x
Review Date2016-12-12
Change Date2016-12-12
Edition Date2016-12-12
Edition AuthorsOliver, L.; R. Bittman (2013), rev. R. Bittman (2016)
Threat ImpactMedium - low
Range Extent250-1000 square km (about 100-400 square miles)
Number of Occurrences6 - 20
Rank Reasons
Chorizanthe blakleyi is endemic to California and is known from Santa Barbara and Ventura counties. Specifically, in Santa Barbara county it is known from the Sierra Madre Mountains. C. blakleyi is distributed in a limited number of occurrences and is possibly threatened by vehicles, recreation, road maintenance and non-native plants. There are 12 mapped occurrences, but 9 are historic and need rechecking.
Range Extent Comments
Chorizanthe blakleyi is endemic to southern California and is known from Santa Barbara and Ventura counties (CNPS 2001).
Occurrences Comments
There are 12 mapped occurrences, but 9 are historic and need rechecking (CNDDB 2016).
Threat Impact Comments
Some occurrences list threats including ORV use, trampling from hiking, recreational use, roads/parking, and weeds (CNDDB 2016). However, several are in the Los Padres National Forest, where the threats are likely minimal (CNDDB 2016).
Ecology & Habitat

Habitat

Sandy or gravelly soils, on flats or on hillsides or slopes which are often north-facing. Occasionally on roadsides. Predominantly found within Chaparral communities, occasionally within oak woodlands. 550 - 1600 m.
Terrestrial Habitats
Forest/WoodlandWoodland - HardwoodShrubland/chaparral
Other Nations (1)
United StatesN2
ProvinceRankNative
CaliforniaS2Yes
Threat Assessments
ThreatScopeSeverityTiming
4 - Transportation & service corridors———
4.1 - Roads & railroads———
6 - Human intrusions & disturbance———
6.1 - Recreational activities———
8 - Invasive & other problematic species, genes & diseases———
8.1 - Invasive non-native/alien species/diseases———

—

Plant Characteristics
Economic Value (Genus)No
Roadless Areas (1)
California (1)
AreaForestAcres
Fox MountainLos Padres National Forest52,072
References (7)
  1. CalFlora. 2005. Information on California plants for education, research and conservation. Berkeley, California: The CalFlora Database [web application]. Available: http://www.calflora.org/. (Accessed 2005)
  2. California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.
  3. California Natural Diversity Database (CNDDB). 2016. RareFind Version 5.1.1. California Department of Fish and Game, Sacramento.
  4. Flora of North America Editorial Committee (FNA). 2005. Flora of North America north of Mexico. Vol. 5. Magnoliophyta: Caryophyllidae: Caryophyllales, Polygonales, and Plumbaginales. Oxford Univ. Press, New York. vii + 656 pp.
  5. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  6. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
  7. Smith, C.F. 1998. A flora of the Santa Barbara region, California. 2nd edition. Santa Barbara Botanic Garden and Capra Press, Santa Barbara. 391 pp.