Swale Desert-parsley, Swale Desert Parsley, Wyeth Biscuitroot, Streambank Desert-parsley, Streambank Desert Parsley: Lomatium ambiguum (Synonyms: Cogswellia ambigua, Peucedanum ambiguum) -
Broad Nineleaf Lomatium, Broadnineleaf Biscuitroot, Nine-leaf Desert Parsley, Nineleaf Biscuitroot: Lomatium anomalum (Synonyms:Lomatium triternatum ssp. triternatum var. anomalum, Lomatium triternatum var. anomalum) -
Bentonite Biscuitroot: Lomatium bentonitum -
Brandegee's Desert Parsley: Lomatium brandegeei (Synonym: Cynomarathrum brandegeei) -
Narrowfruit Biscuitroot, Nineleaf Desert Parsley: Lomatium brevifolium (Synonyms: Lomatium triternatum var. alatum, Lomatium triternatum var. var. brevifolium, Lomatium triternatum var. macrocarpum) -
Brunsfeld's Desert Parsley: Lomatium brunsfeldianum -
California Lomatium: Lomatium californicum -
Canby's Biscuitroot, Canby's Desert-parsley, Canby's Desert Parsley, Canby's Lomatium, Chucklusa: Lomatium canbyi (Synonyms: Cogswellia canbyi, Peucedanum canbyi) -
Columbia Desert Parsley, Columiba Gorge Desert Parsley: Lomatium columbianum (Synonym: Leptotaenia purpurea) - A species of the Columbia River Gorge, it can be found up the Klickitat drainage in south-central Washington and on the eastern foothills of the Cascades in Wasco county, Oregon.
Cous, Cous Biscuitroot, Cous-root Desert Parsley: Lomatium cous (Synonyms: Lomatium circumdatum, Lomatium montanum) -
Cusick's Biscuitroot, Cusick's Desert-parsley, Cusick's Desert Parsley: Lomatium cusickii -
Wenatchee Mts. Desert Parsley, Wenatchee Desert Parsley, Wenatchee Mountain Lomatium: Lomatium cuspidatum (Synonym: Leptotaenia watsoni) -
Fern-leaf Biscuitroot, Fern-leaf Desert Parsley, Fern-leaf Lomatium: Lomatium dissectum (Synonyms: Leptotaenia dissecta, Leptotaenia foliosa var. dissecta, Lomatium dissectum var. dissectum) -
Fern-leaf Desert Parsley, Fern-leaf Biscuitroot: Lomatium dissectum var. eatonii (Now lumped with var. multifidum below.) -
Donnell's Biscuitroot, Donnell's Lomatium, Glaucous Lomatium: Lomatium donnellii (Synonym: Lomatium plummerae) -
Redfruit Desert Parsley, Red-fruited Lomatium: Lomatium erythrocarpum -
Hamblen's Desert Parsley, Northern Biscuitroot: Lomatium farinosum - Recently combined from the following 2 taxa.
Northern Biscuitroot: Lomatium farinosum var. farinosum (Synonym: Peucedanum farinosum ) -
Hamblen's Desert Parsley, Hamblen's Biscuitroot, Hamblen's Desert-parsley, Hamblen's Lomatium: Lomatium farinosum (Synonyms: Lomatium farinosum var. farinosum, Lomatium farinosum var. hambleniae, Lomatium hambleniae, Peucedanum farinosum) -
Desert Biscuitroot, Fringed Desert Parsley: Lomatium foeniculaceum var. fimbriatum (Synonym: Lomatium foeniculaceum ssp. fimbriatum)
Fennelleaf Lomatium, MacDougal's Biscuitroot: Lomatium foeniculaceum var. macdougalii (Synonyms: Lomatium foeniculaceum ssp. macdougalii, Lomatium jonesii, Lomatium macdougalii) -
Geyer's Desert Parsley, Geyer's Biscuitroot: Lomatium geyeri -
Gorman's Desert Parsley, Gorman's Biscuitroot, Salt and Pepper: Lomatium gormanii -
Greenman's Desert Parsley, Greenman's Lomatium: Lomatium greenmanii -
John Day Lomatium, Henderson's Biscuitroot, Henderson's Desert Parsley, Henderson's Lomatium: Lomatium hendersonii -
Idaho Lomatium, Idaho Biscuitroot: Lomatium idahoense -
Klickitat Desert Parsley, Klickitat Lomatium: Lomatium klickitatense (Synonym: Lomatium grayi in part) - Distinct, pungent odor of foliage. Plants are larger, more rounded in form with longer leaf segments than similar L. papilioniferum. Endemic to the Columbia River Gorge near The Dalles, OR and adjacent Klickitat County in Washington.
Knoke's Biscuit-root: Lomatium knokei -
Smooth Desert Parsley, Slickrock Biscuitroot, Slickrock Desert Parsley, Smooth Lomatium: Lomatium laevigatum -
Gumbo Lomatium, Gumbo-lomatium, Slender-fruited Desert Parsley, Wasatch Desertparsley, Wasatch desert-parsley: Lomatium leptocarpum (Synonyms: Lomatium ambiguum ssp. leptocarpum, Lomatium ambiguum var. leptocarpum, Lomatium bicolor, Lomatium bicolor var. leptocarpum, Peucedanum bicolor var. gumbonis, Peucedanum leptocarpum, Peucedanum nuttallii var. leptocarpum, Peucedanum triternatum var. leptocarpum) -
Great Basin Indian Potato, Great Basin Orogenia, Linear-leaved Orogenia: Lomatium linearifolia (Synonyms: Orogenia linearifolia, Orogenia linearifolia var. lata)
Hoover's Umbrellawort, Hoover's Umbrella-wort, Hoover's Tauschia: Lomatium lithosolamans (Synonym: Tauschia hooveri) -
Biscuit Root, Bigseed Biscuitroot, Bigseed Lomatium, Gray-leaf Desert Parsley, Large-fruit Desert Parsley, Large-fruited Lomatium: Lomatium macrocarpum (Synonyms: Cogswellia macrocarpa, Ferula macrocarpa, Lomatium flavum, Lomatium macrocarpum var. artemisiarum, Lomatium macrocarpum var. ellipticum, Peucedanum macrocarpum) -
John Day Valley Lomatium: Lomatium minus -
Mountain Lomatium: Lomatium montanum -
Carrotleaf Desert Parsley, Fern-leaf Desert Parsley, Fern-leaf Biscuitroot: Lomatium multifidum (Synonyms: Leptotaenia multifida, Lomatium dissectum var. eatonii, Lomatium dissectum var. multifidum) -
Nevada Biscuitroot, Nevada Desert Parsley, Nevada Lomatium: Lomatium nevadense var. nevadense -
Barestem Desert Parsley, Barestem Biscuitroot, Indian-consumption-plant, Pestle Parsnip: Lomatium nudicaule -
Ochoco Lomatium: Lomatium ochocense -
Blue Mountain Lomatium, Oregon Lomatium, Wallowa Lomatium: Lomatium oreganum -
Leiberg's Desert Parsley: Lomatium orogenioides -
Packard's Lomatium: Lomatium packardiae -
Pungent Desert Parsley, Gray's Biscuitroot, Gray's Lomatium, Milfoil Lomatium: Lomatium papilioniferum (Synonyms: Lomatium grayi, Lomatium grayi var. grayi) -
Shepherd's Lomatium: Lomatium pastorale (Synonym: Lomatium tarantuloides) -
Peck's Desert Parsley: Lomatium peckianum -
Salt and Pepper, Piper's Desert Parsley, Indian Biscuitroot: Lomatium piperi -
Umptanum Desert-parsley, Umptanum Desert Parsley: Lomatium quintuplex -
Lassen Parsley, Raven's Biscuitroot: Lomatium ravenii var. paiutense -
Rollin's Desert=parsley, Rollins' Desert Parsley, Rollins' Biscuitroot: Lomatium rollinsii -
Rone's Biscuit-root, Rone's Desert-parsley: Lomatium roneorum -
Biscuitroot: Lomatium roseanum -
Salmonflower Biscuitroot, Salmon River Desert-parsley, Salmon River Desert Parsley: Lomatium salmoniflorum -
Sandberg's Biscuit-root: Lomatium sandbergii -
Snake Canyon Desert Parsley, Snake Canyon Desert-parsley, Snake Canyon Lomatium, Sweetscented Biscuitroot: Lomatium serpentinum (Synonym: Cogswellia fragrans) -
Broad Fruit Lomatium, Nine-leaf Desert Parsley, Downy Desert Parsley, Great Basin Desertparsley, Great Basin Desert Parsley: Lomatium simplex var. simplex (Synonyms: Lomatium platycarpum, Lomatium triternatum ssp. platycarpum) -
Suksdorf's Desert Parsley: Lomatium suksdorfii -
Leiberg's Umbrellawort, Leiberg's Umbrella-wort, Leiberg's Tauschia: Lomatium tenuissimum (Synonyms: Leibergia orogenioides, Lomatium orogenioides, Tauschia tenuissima) - Endemic to eastern Spokane County, WA and adjacent northern Idaho.
Thompson's Desert Parsley: Lomatium thompsonii (Synonym: Lomatium suksdorfii var. thompsonii) -
Nineleaf Biscuitroot, Nineleaf Desert Parsley, Nineleaf Lomatium: Lomatium triternatum var. triternatum (Synonyms: Lomatium simplex var. leptophyllum, Lomatium triternatum var. alatum, Lomatium triternatum var. macrocarpum, Lomatium triternatum ssp. triternatum, Lomatium triternatum ssp. triternatum var. triternatum) -
Hoover's Lomatium, Hoover's Desert Parsley, Potato Desert Parsley: Lomatium tuberosum -
Common Lomatium, Spring Gold: Lomatium utriculatum - A coastal species, a collection (mis-identified?) seems to have been made in northeastern Washington.
Broadsheath Desert Parsley, Broad-sheath Desert Parsley, Broad-sheath Lomatium, Sheathing Lomatium: Lomatium vaginatum (Synonyms: Lomatium utriculatum var. papillatum, Cogswellia vaginata) -
Watson's Desert Parsley, Watson's Desert-parsley, Watson's Lomatium: Lomatium watsonii (Synonym: Lomatium frenchii) -