Roadless Areas
Home/Species/ Peirson's Morning-glory

Calystegia peirsonii

(Abrams) Brummitt

Peirson's Morning-glory

G4Apparently Secure Found in 5 roadless areas NatureServe Explorer →
G4Apparently SecureGlobal Rank
MediumThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.145953
Element CodePDCON040A0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderSolanales
FamilyConvolvulaceae
GenusCalystegia
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 Date2014-08-13
Change Date2014-08-13
Edition Date2014-08-13
Edition AuthorsD. Gries, rev. R. Bittman (2014)
Threat ImpactMedium
Range Extent5000-20,000 square km (about 2000-8000 square miles)
Number of Occurrences81 - 300
Rank Reasons
Endemic to Los Angeles County, California, Calystegia peirsonii is known from 4 to 15 extant occurrences. It is a very 'weedy' species; some disturbance may even be beneficial, so fragility is not a primary concern. Still, grazing, development, and pipeline construction may threaten some sites.
Range Extent Comments
California endemic, known from Los Angeles County.
Occurrences Comments
100 unprocessed sources in CNDDB (2014), and 114 specimen records in the Consortium of California Herbaria (2014).
Threat Impact Comments
Grazing, development, and pipeline construction may threaten some sites (CNDDB 2014).
Ecology & Habitat

Habitat

Chaparral, chenopod scrub, cismontane woodland, coastal scrub, lower montane coniferous forest.
Other Nations (1)
United StatesN4
ProvinceRankNative
CaliforniaS4Yes
Threat Assessments
ThreatScopeSeverityTiming
1 - Residential & commercial development———
1.1 - Housing & urban areas———
1.2 - Commercial & industrial areas———
2 - Agriculture & aquaculture———
2.3 - Livestock farming & ranching———
4 - Transportation & service corridors———
4.2 - Utility & service lines———

—

Plant Characteristics
Economic Value (Genus)No
Roadless Areas (5)
California (5)
AreaForestAcres
Fish CanyonAngeles National Forest29,886
Magic MountainAngeles National Forest15,542
Red MountainAngeles National Forest8,034
Sespe - FrazierAngeles National Forest4,254
TuleAngeles National Forest9,861
References (3)
  1. California Natural Diversity Database (CNDDB). 2014. RareFind Version 5. California Department of Fish and Game, Sacramento.
  2. 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.
  3. Skinner, M.W., and B.M. Pavlik, eds. 1997 (1994). Inventory of rare and endangered vascular plants of California. 1997 Electronic Inventory Update of 1994 5th edition, California Native Plant Society, Special Publication No. 1, Sacramento.