CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-14oct 10-10-14
Status: record atriplex_joaquinana - Tue, Oct. 21, 2014 17:31 ET c
Atriplex joaquinana
common nameSan Joaquin spearscale
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familyChenopodiaceae
life formannual herb
CA Rare Plant Rank
List 1B.2
CA-Endemic
LIST 1B: Rare, threatened, or endangered in California and elsewhere.
     0.2: Fairly endangered in California
state rank
S2      ranking system key
global rank
G2     G2: 6-20 occurrences OR 1,000-3,000 individuals OR 2,000-10,000 acres
CA state listingNone  
federal listingNone  
where found
(12/2) v7 maps currently unavailable - use link below for v8 details and maps

Topographic quads (48):
Morro Bay South (247D)? 3512037, Ciervo Mountain (339A) 3612045, Hepsedam Peak (340D) 3612037, San Felipe (385B)* 3612184, Hollister (385C) 3612174, Tres Pinos (385D) 3612173, Arena (422C) 3712036, Gustine (423C) 3712038, Milpitas (427B) 3712148, Altamont (445B) 3712166, Livermore (446A) 3712167, Niles (446C) 3712158, Newark (447D) 3712251, Stockton West (462A)* 3712183, Woodward Island (463A) 3712185, Brentwood (463B) 3712186, Byron Hot Springs (463C) 3712176, Clifton Court Forebay (463D) 3712175, Antioch South (464A) 3712187, Diablo (464C)* 3712178, Tassajara (464D) 3712177, Walnut Creek (465A) 3712281, Las Trampas Ridge (465D)* 3712271, Oakland West (466D)* 3712273, Rio Vista (480B)* 3812126, Denverton (481B) 3812128, Antioch North (481D) 3812117, Fairfield South (482A) 3812221, Vine Hill (482D) 3812211, Cuttings Wharf (483A) 3812223, Saxon (497B) 3812146, Elmira (498C)* 3812138, Dozier (498D) 3812137, Fairfield North (499D) 3812231, Napa (500D) 3812233, Grays Bend (513B) 3812166, Davis (513C) 3812156, Dunnigan (530B)* 3812188, Glascock Mountain (532A) 3812283, Colusa (546A) 3912221, Williams (546B) 3912222, Manor Slough (547A) 3912223, Wilbur Springs (547C) 3912214, Salt Canyon (547D) 3912213, Logandale (562B) 3912242, Sites (563D) 3912233, Stonyford (564A) 3912245, Willows (578C)* 3912252
quad data info

Counties, states, regions:
Alameda (ALA), Contra Costa (CCA), Colusa (COL), Fresno (FRE), Glenn (GLE), Merced (MER), Monterey (MNT), Napa (NAP), San Benito (SBT), Santa Clara (SCL)*, San Joaquin (SJQ)*, San Luis Obispo (SLO)?, Solano (SOL), Tulare (TUL)?*, Yolo (YOL)
counties map
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CNPS habitats•Chenopod scrub (ChScr)
•Meadows and seeps (Medws)
•Playas (Plyas)
•Valley and foothill grassland (VFGrs)/alkaline
blooming period Apr-Oct  
elevation range1 - 835 meters
notes
Many occurrences extirpated. Need historical quads for TUL Co. Need quads for MNT Co. Report from SLO Co. (247D) needs verification. Threatened by grazing, agriculture, and development. See Proceedings of the American Academy of Arts and Sciences 9:108 (1874) for original description, and Proceedings of the Biological Society of Washington 17:99 (1904) for revised nomenclature.
full nameAtriplex joaquinana A. Nelson
Version 8    INVENTORY VERSION 8 - Details for this taxon, including GIS and other links

Additional information:
standard acronym   Element Code  PDCHE041F3
Jepson Online Jepson Interchange  Jepson Manual and other resources
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Suggested citation: California Native Plant Society (CNPS). 2014. Inventory of Rare and Endangered Plants (online edition, v7-14oct). California Native Plant Society. Sacramento, CA. Accessed on Tue, Oct. 21, 2014 from http://www.cnps.org/inventory

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