CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-14mar 3-27-14
Status: record calystegia_peirsonii - Thu, Apr. 24, 2014 22:46 ET c
Calystegia peirsonii
common namePeirson's morning-glory
CalPhotos image
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© 2002 Dean Wm. Taylor  Follow image link for photo data.
familyConvolvulaceae
life form rhizomatous herb
CA Rare Plant Rank
List 4.2
CA-Endemic
LIST 4: Limited distribution (Watch List).
     0.2: Fairly endangered in California
state rank
S3.2     S3: 21-80 occurrences or 3,000-10,000 individuals OR 10,000-50,000 acres
global rank
G3     G3: 21-80 occurrences or 3,000-10,000 individuals OR 10,000-50,000 acres
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
(12/2) v7 maps currently unavailable - use link below for v8 details and maps

Counties, states, regions:
Los Angeles (LAX)
  • Green indicates one or more populations.
  • Yellow indicates uncertainty[?] or extirpation[*]. See list above. A complete key is on the Index by County page.
  • Pending additional quad-level data, only county data are being provided for List 4 plants.
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chaparral (Chprl)
•Chenopod scrub (ChScr)
•Cismontane woodland (CmWld)
•Coastal scrub (CoScr)
•Lower montane coniferous forest (LCFrs)
•Valley and foothill grassland (VFGrs)
blooming period Apr-Jun  
elevation range30 - 1500 meters
notes
Threatened by grazing and development. Possibly threatened by powerline construction. Intergrades with other Calystegia spp. See Illustrated Flora of the Pacific States 3:387 (1951) by L. Abrams for original description, and Annals of the Missouri Botanical Garden 52(2):214-216 (1965) for revised nomenclature.
full nameCalystegia peirsonii (Abrams) Brummitt
Version 8    INVENTORY VERSION 8 - Details for this taxon, including GIS and other links

Additional information:
standard acronym  CAPE18 Element Code  PDCON040A0
CalFlora
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web


Suggested citation: California Native Plant Society (CNPS). 2014. Inventory of Rare and Endangered Plants (online edition, v7-14mar). California Native Plant Society. Sacramento, CA. Accessed on Thu, Apr. 24, 2014 from http://www.cnps.org/inventory

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