Major Changes Implemented Since CNPS Inventory, 6th Edition (2001) Last Updated December 31, 2018 (note: changes newly accepted since October 1, 2018 are in orange text) California Rare Plant Rank Additions Date Abutilon abutiloides - Added to CRPR 2B.1 5-Oct-2016 Acanthoscyphus parishii var. parishii - Added to CRPR 4.2 9-Apr-2007 Adiantum shastense - Added to CRPR 4.3 18-Nov-2016 Agrostis lacuna-vernalis - Added to CRPR 1B.1 14-Jun-2012 Aliciella triodon - Added to CRPR 2B.2 4-Oct-2006 Allium abramsii - Added to CRPR 1B.2 13-Mar-2012 Allium howellii var. howellii - Added to CRPR 4.3 4-Apr-2017 Allium howellii var. sanbenitense - Added to CRPR 1B.3 4-Apr-2017 Allium punctum - Added to CRPR 2B.2 8-Sep-2009 Almutaster pauciflorus - Added to CRPR 2B.2 14-Mar-2017 Ambrosia monogyra - Added to CRPR 2B.2 21-Feb-2007 Amsinckia douglasiana - Added to CRPR 4.2 20-Aug-2007 Ancistrocarphus keilii - Added to CRPR 1B.1 1-Jan-2005 Anemone multifida var. multifida - Added to CRPR 2B.2 28-Aug-2017 Antennaria lanata - Added to CRPR 2B.2 1-Jan-2004 Antennaria sawyeri - Added to CRPR 1B.2 29-Oct-2015 Arctostaphylos gabilanensis - Added to CRPR 1B.2 1-Jan-2005 Arctostaphylos ohloneana - Added to CRPR 1B.1 2-Apr-2009 Arctostaphylos pacifica - Added to CRPR 1B.2 15-Mar-2007 Artemisia tripartita ssp. tripartita - Added to CRPR 2B.3 20-Aug-2012 Astragalus austiniae - Added to CRPR 1B.3 4-Dec-2013 Astragalus bernardinus - Added to CRPR 1B.2 17-Feb-2011 Astragalus hornii var. hornii - Added to CRPR 1B.1 1-Dec-2006 Astragalus kentrophyta var. ungulatus - Added to CRPR 2B.2 5-Feb-2008 Astragalus pulsiferae var. coronensis - Added to CRPR 4.2 1-Jan-2005 Astragalus nyensis - Added to CRPR 1B.1 27-Dec-2011 Astragalus sabulonum - Added to CRPR 2B.2 19-Oct-2011 Astragalus tidestromii - Added to CRPR 2B.2 5-Jan-2009 Atriplex argentea var. longitrichoma - Added to CRPR 1B.1 29-Jul-2010 Atriplex pusilla - Added to CRPR 2B 28-Aug-2006 Berberis harrisoniana - Added to CRPR 1B.2 6-Feb-2006 Berberis higginsiae - Added to CRPR 3.2 30-Apr-2014 Boechera evadens - Added to CRPR 1B.3 11-Apr-2012 Boechera pendulina - Added to CRPR 2B.3 1-Jan-2004 Boechera rollei - Added to CRPR 1B.1 1-Jun-2011 Boechera rubicundula - Added to CRPR 1B.1 27-Apr-2011 Boechera serpenticola - Added to CRPR 1B.2 6-May-2011 Boechera shevockii - Added to CRPR 1B.1 6-May-2011 Boechera tularensis - Added to CRPR 1B.3 5-Jul-2011 Boechera ultraalsa - Added to CRPR 1B.1 1-Jun-2011 Boechera yorkii - Added to CRPR 1B.3 1-Jan-2005 Botrychium paradoxum - Added to CRPR 2B.1 5-Mar-2012 Botrychium pedunculosum - Added to CRPR 2B.1 31-Oct-2011 Botrychium pumicola - Added to CRPR 2B.2 5-Jan-2009 Page 1 of 29 Major Changes Implemented Since CNPS Inventory, 6th Edition (2001) Last Updated December 31, 2018 (note: changes newly accepted since October 1, 2018 are in orange text) Botrychium tunux - Added to CRPR 2B.1 5-Mar-2012 Botrychium yaaxudakeit - Added to CRPR 2B.1 5-Mar-2012 Brasenia schreberi - Added to CRPR 2B.3 27-Oct-2010 Brodiaea matsonii - Added to CRPR 1B.1 12-Jul-2011 Brodiaea santarosae - Added to CRPR 3 4-Feb-2008 Brodiaea sierrae - Added to CRPR 4.3 20-Nov-2012 Bryoria pseudocapillaris - Added to CRPR 3.2 1-Mar-2014 Bryoria spiralifera - Added to CRPR 1B.1 1-Mar-2014 Bryum chryseum - Added to CRPR 4.3 5-May-2014 Buxbaumia viridis - Added to CRPR 2B.2 23-Mar-2011 Calicium adspersum - Added to CRPR 2B.2 1-Mar-2014 Calochortus uniflorus - Added to CRPR 4.2 4-Mar-2010 Calycadenia micrantha - Added to CRPR 1B 22-Feb-2006 Calyptridium arizonicum - Added to CRPR 2B.1 17-Aug-2011 Calyptridium pygmaeum - Added to CRPR 1B.2 10-Oct-2008 Calystegia collina ssp. tridactylosa - Added to CRPR 1B.2 17-Nov-2006 Calystegia felix - Added to CRPR 3.1 17-Jul-2014 Calystegia vanzuukiae - Added to CRPR 1B.3 16-Jul-2014 Cardamine angulata - Added to CRPR 2B.1 10-Apr-2012 Carex constanceana - Added to CRPR 1B.1 9-May-2007 Carex cyrtostachya - Added to CRPR 1B.2 18-Aug-2015 Carex klamathensis - Added to CRPR 1B.2 20-Mar-2008 Carex lenticularis var. limnophila - Added to CRPR 2B.2 1-Jan-2005 Carex nardina - Added to CRPR 2B.2 28-Oct-2013 Carex stevenii - Added to CRPR 2B.2 21-Nov-2011 Carex xerophila - Added to CRPR 1B.2 6-Jun-2016 Castilleja ambigua ssp. ambigua - Added to CRPR 4.2 4-Feb-2009 Castilleja ambigua ssp. insalutata - Added to CRPR 1B.1 4-Mar-2010 Castilleja ambigua var. meadii - Added to CRPR 1B.1 3-Jan-2013 Castilleja lassenensis - Added to CRPR 1B.3 18-Jul-2017 Castilleja leschkeana - Added to CRPR 1A 27-Nov-2012 Catabrosa aquatica - Added to CRPR 2B.1 12-Dec-2018 Ceanothus decornutus - Added to CRPR 1B.2 16-Jun-2016 Centromadia parryi var. parryi - Added to CRPR 1B.2 1-Jan-2004 Centromadia parryi var. rudis - Added to CRPR 4.2 30-May-2007 Chenopodium littoreum - Added to CRPR 1B.2 1-Jun-2011 Chorizanthe minutiflora - Added to CRPR 1B.2 17-Jan-2017 Chrysosplenium glechomifolium - Added to CRPR 4.3 15-Oct-2015 Cicuta maculata var. bolanderi - Added to CRPR 2B.1 5-Jan-2009 Cirsium arizonicum var. tenuisectum - Added to CRPR 1B.2 27-Dec-2006 Cirsium occidentale var. lucianum - Added to CRPR 1B.2 8-Apr-2011 Cladium californicum - Added to CRPR 2B.2 17-Aug-2006 Cladonia firma - Added to CRPR 2B.1 1-Mar-2014 Claytonia parviflora ssp. grandiflora - Added to CRPR 4.2 29-Sep-2006 Climacium dendroides - Added to CRPR 2B.1 5-May-2014 Page 2 of 29 Major Changes Implemented Since CNPS Inventory, 6th Edition (2001) Last Updated December 31, 2018 (note: changes newly accepted since October 1, 2018 are in orange text) Clinopodium mimuloides - Added to CRPR 4.2 4-May-2007 Collomia tenella - Added to CRPR 2B.2 17-Apr-2009 Coptis laciniata - Added to CRPR 2B.2 16-Oct-2006 Corispermum americanum var. americanum - Added to CRPR 2B.2 11-May-2009 Cornus canadensis - Added to CRPR 2B.2 11-Dec-2012 Coryphantha chlorantha - Added to CRPR 2B.2 8-Nov-2006 Coscinodon arctolimnius ssp. higuchi - Added to CRPR 13-May-2014 Crataegus castlegarensis - Added to CRPR 3 22-Jun-2006 Crepis runcinata - Added to CRPR 2B.2 26-Oct-2015 Cryptantha celosioides - Added to CRPR 2B.3 3-Aug-2009 Cryptantha circumscissa var. rosulata - Added to CRPR 1B.2 20-Nov-2008 Cryptantha excavata - Added to CRPR 1B.3 15-Aug-2007 Cryptantha fendleri - Added to CRPR 2B.2 17-Nov-2009 Cryptantha rostellata - Added to CRPR 4.2 26-Jun-2018 Cryptantha schoolcraftii - Added to CRPR 2B.2 22-Dec-2009 Cryptantha wigginsii - Added to CRPR 1B.2 20-May-2013 Cuscuta californica var. apiculata - Added to CRPR 3 14-Jun-2007 Cuscuta jepsonii - Added to CRPR 3 16-Feb-2007 Cuscuta obtusiflora var. glandulosa - Added to CRPR 2B.2 24-Aug-2011 Cuscuta pacifica var. papillata - Added to CRPR 1B.2 20-Sep-2011 Cylindropuntia xfosbergii - Added to CRPR 3 2-Apr-2009 Cymopterus globosus - Added to CRPR 2B.2 22-Feb-2006 Cymopterus multinervatus - Added to CRPR 2B.2 20-Nov-2008 Cypripedium parviflorum var. makasin - Added to CRPR 3.1 29-Sep-2006 Dacryophyllum falcifolium - Added to CRPR 1B.3 25-Sep-2006 Deinandra paniculata - Added to CRPR 4.2 21-Aug-2007 Delphinium parryi ssp. eastwoodiae - Added to CRPR 1B.2 5-Oct-2011 Delphinium scaposum - Added to CRPR 2B.3 1-Mar-2006 Didymodon californicus - Added to CRPR 4.2 14-May-2014 Digitaria californica - Added to CRPR 2B.3 14-Sep-2006 Downingia willamettensis - Added to CRPR 2B.2 20-Sep-2018 Drymocallis cuneifolia var. cuneifolia - Added to CRPR 1B.1 22-Nov-2011 Dudleya virens ssp. hassei - Added to CRPR 1B.2 8-Mar-2011 Eleocharis torticulmis - Added to CRPR 1B.3 1-Jan-2004 Ephedra torreyana - Added to CRPR 2B.1 8-Feb-2012 Eremogone cliftonii - Added to CRPR 1B.3 4-Aug-2008 Eriastrum ertterae - Added to CRPR 1B.1 19-Dec-2013 Eriastrum harwoodii - Added to CRPR 1B.2 22-Jul-2008 Eriastrum rosamondense - Added to CRPR 1B.1 4-Dec-2013 Eriastrum sparsiflorum - Added to CRPR 4.3 4-Sep-2012 Erigeron lassenianus var. deficiens - Added to CRPR 1B.3 28-Sep-2012 Erigeron maniopotamicus - Added to CRPR 1B.2 1-Jan-2005 Erigeron oxyphyllus - Added to CRPR 2B.3 30-Mar-2006 Eriodictyon sessilifolium - Added to CRPR 2B.1 18-Jan-2017 Eriogonum callistum - Added to CRPR 1B.1 14-Oct-2008 Page 3 of 29 Major Changes Implemented Since CNPS Inventory, 6th Edition (2001) Last Updated December 31, 2018 (note: changes newly accepted since October 1, 2018 are in orange text) Eriogonum cedrorum - Added to CRPR 1B.3 1-Mar-2010 Eriogonum elegans - Added to CRPR 4.3 19-Dec-2011 Eriogonum luteolum var. saltuarium - Added to CRPR 1B.2 4-Aug-2008 Eriogonum mensicola - Added to CRPR 1B.3 16-Sep-2008 Eriogonum microthecum var. lacus-ursi - Added to CRPR 1B.1 1-Jan-2005 Eriogonum microthecum var. schoolcraftii - Added to CRPR 1B.2 10-Jul-2007 Eriogonum nudum var. psychicola - Added to CRPR 1B.1 21-Jun-2010 Eriogonum ovalifolium var. depressum - Added to CRPR 2B.1 23-Aug-2012 Eriogonum ovalifolium var.