Introduction
Background
Classifying local rarity
L-rank categories | Criteria |
---|---|
X = Presumed extinct | Not located despite extensive searches and virtually no likelihood of rediscovery |
H = Possibly extinct | Missing; known from only historical occurrences but still some hope of rediscovery |
1 = Critically imperiled | Area < 10 km2 (or fewer then ten 1 km2 cells) |
2 = Imperiled | Area < 50 km2 (or fewer then fifty 1 km2 cells) |
3 = Vulnerable to threat or extinction | Area < 250 km2 (or fewer then two hundred fifty 1 km2 cells) |
4 = Apparently secure | Uncommon but not rare, some cause for long-term concern due to declines or other factors |
5 = Demonstrably widespread, abundant, and secure | Common; widespread and abundant |
A case study of local rarity
Results
L-rank | Taxon | Family |
---|---|---|
L1 | Lomatiumdasycarpum (Torr. & A. Gray) J.M. Coult. & Rose ssp. tomentosum (Benth.) Theob. | Apiaceae |
L1 | Silenelemmonii S. Watson | Caryophyllaceae |
L1 | Carexbrainerdii Mack. | Cyperaceae |
L1 | Chimaphilamenziesii (D. Don) Spreng. | Ericaceae |
L1 | Phaceliamutabilis Greene | Hydrophyllaceae |
L1 | Calochortusvenustus Benth. | Liliaceae |
L1 | Bromusgrandis (Shear) Hitchc. | Poaceae |
L1 | Elymusglaucus Buckley ssp. jepsonii (Burtt Davy) Gould | Poaceae |
L1 | Ceanothusprostratus Benth. | Rhamnaceae |
L2 | Eryngiumarmatum (S. Watson) J.M. Coult. & Rose | Apiaceae |
L2 | Gnaphaliumbicolor Bioletti | Asteraceae |
L2 | Gnaphaliumcanescens DC. ssp. microcephalum (Nutt.) Stebb. & D.J. Keil | Asteraceae |
L2 | Heterothecasessiliflora (Nutt.) Shinn. ssp. bolanderi (A. Gray) Semple | Asteraceae |
L2 | Barbareaorthoceras Ledeb. | Brassicaceae |
L2 | Dudleyacaespitosa (Haw.) Britton & Rose | Crassulaceae |
L2 | Juncuslesueurii Bol. | Juncaceae |
L2 | Juncusoccidentalis (Coville) Wiegand | Juncaceae |
L2 | Juncusphaeocephalus Engelm. var. phaeocephalus | Juncaceae |
L2 | Forestierapubescens Nutt. | Oleaceae |
L2 | Limoniumcalifornicum (Boiss.) A. Heller | Plumbaginaceae |
L2 | Ceanothusdentatus Torr. & A. Gray | Rhamnaceae |
L2 | Penstemonnewberryi A. Gray var. sonomensis | Scrophulariaceae |
L3 | Angelicatomentosa S. Watson | Apiaceae |
L3 | Bowlesiaincana Ruiz & Pav. | Apiaceae |
L3 | Lomatiumvaginatum (M.E. Jones) J. Coulter & Rose | Apiaceae |
L3 | Erigeronreductus (Cronq.) G.L. Nesom var. ruductus | Asteraceae |
L3 | Erigeronreductus (Cronq.) G.L. Nesom var. angustatus (A. Gray) G.L. Nesom | Asteraceae |
L3 | Grindeliastricta DC. var. angustifolia (A. Gray) M.A. Lane | Asteraceae |
L3 | Jaumeacarnosa (Less.) A. Gray | Asteraceae |
L3 | Plagiobothryscanescens Benth. | Boraginaceae |
L3 | Idahoascapigera (Hook.) A. Nelson & J.F. Macbr. | Brassicaceae |
L3 | Streptanthusbrachiatus F.W. Hoffmann ssp. brachiatus | Brassicaceae |
L3 | Paxistimamyrsinites (Pursh) Raf. | Celastraceae |
L3 | Dichondradonelliana Tharp & M.C. Johnst. | Convolvulaceae |
L3 | Bergiatexana (Hook.) Seub. | Elatinaceae |
L3 | Lotuspinnatus Hook. | Fabaceae |
L3 | Garryaflavescens S. Watson | Garryaceae |
L3 | Geraniumbicknellii Britton | Geraniaceae |
L3 | Hydrophyllumoccidentale (S. Watson) A. Gray | Hydrophyllaceae |
L3 | Triglochinmaritima L. | Juncaginaceae |
L3 | Monardellasheltonii Torr. | Lamiaceae |
L3 | Alliumlacunosum S. Watson var. Lacunosum | Liliaceae |
L3 | Epilobiumhalleanum Hausskn. | Onagraceae |
L3 | Elymuselymoides (Raf.) Swezey | Poaceae |
L3 | Leptochloafascicularis (Lam.) A. Gray | Poaceae |
L3 | Spartinafoliosa Trin. | Poaceae |
L3 | Collomiagrandiflora Lindl. | Polemoniaceae |
L3 | Navarretiadivaricata (A. Gray) Greene ssp. vividior (Jeps. & V.L. Bailey) H. Mason | Polemoniaceae |
L3 | Cheilanthescovillei Maxon | Pteridaceae |
L3 | Ceanothuspumilus Greene | Rhamnaceae |
L3 | Acaenapinnatifida Ruiz & Pav.var. californica (Bitter) Jeps. | Rosaceae |
L3 | Potentillaanserina L. ssp. Anserina | Rosaceae |
L3 | Potentillaanserina L. ssp. pacifica (Howell) Rousi | Rosaceae |
L3 | Collinsiatinctoria Benth. | Scrophulariaceae |
L3 | Cordylanthusmollis A. Gray ssp. mollis | Scrophulariaceae |
L3 | Cordylanthuspringlei A. Gray | Scrophulariaceae |
LH | Eryngiumvaseyi J.M. Coult. & Rose | Apiaceae |
LH | Lomatiumcaruifolium (Hook. & Arn.) J.M. Coult. & Rose var. denticulatum Jeps. | Apiaceae |
LH | Lomatiumdissectum (Torr. & A. Gray) Mathias & Constance var. dissectum | Apiaceae |
LH | Lemnatrisulca L. | Araceae |
LH | Balsamorhizamacrolepis W.M. Sharp var. platylepis (W.M. Sharp) Ferris | Asteraceae |
LH | Erigeronfoliosus Nutt. var. Foliosus | Asteraceae |
LH | Gutierreziasarothrae (Pursh) Britton & Rusby | Asteraceae |
LH | Pyrrocomaracemosa (Nutt.) Torr. & A. Gray var. paniculata (Nutt.) Kartesz & Gandhi | Asteraceae |
LH | Seneciointegerrimus Nutt. var. exaltatus (Nutt.) Cronq. | Asteraceae |
LH | Stephanomeriavirgata Benth. ssp. virgata | Asteraceae |
LH | Wyethiamollis A. Gray | Asteraceae |
LH | Plagiobothryscusickii (Greene) I.M. Johnst. | Boraginaceae |
LH | Arabissparsiflora Torr. & A. Gray var. arcuata (Nutt) Rollins | Brassicaceae |
LH | Calystegiamalacophylla (Greene) Munz ssp. malacophylla | Convolvulaceae |
LH | Arctostaphylosviscida Parry ssp. viscida | Ericaceae |
LH | Lupinusalbicaulis Hook. | Fabaceae |
LH | Isoetesorcuttii A.A. Eaton | Isoetaceae |
LH | Juncusorthophyllus Coville | Juncaceae |
LH | Juncusphaeocephalus Engelm. var. paniculatus Engelm. | Juncaceae |
LH | Triteleiaixioides (S. Watson) Greene ssp. scabra (Greene) L. Lenz | Liliaceae |
LH | Zigadenuspaniculatus (Nutt.) S. Watson | Liliaceae |
LH | Camissonialuciae P.H. Raven | Onagraceae |
LH | Clarkiabottae (Spach) F.H. Lewis & M.R. Lewis | Onagraceae |
LH | Gauracoccinea Pursh | Onagraceae |
LH | Mimulusalsinoides Benth. | Phrymaceae |
LH | Achnatherumcoronatum (Thurb.) Barkworth | Poaceae |
LH | Allophyllumgilioides (Benth.) A.D. Grant & V.E. Grant ssp. violaceum (A. Heller) A.G. Day | Polemoniaceae |
LH | Calyptridiumroseum S. Watson | Portulacaceae |
LH | Galiumandrewsii A. Gray ssp. intermedium Dempster & Stebb. | Rubiaceae |
LH | Galiumangustifolium Nutt. ssp. angustifolium | Rubiaceae |
LH | Salixmelanopsis Nutt. | Salicaceae |
LH | Castillejalacera (Benth.) Chuang & Heckard | Scrophulariaceae |
LH | Veronicaserpyllifolia L. ssp. humifusa (Dicks.) Syme | Scrophulariaceae |