Washington Flora Checklist
A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium


Checklist » Brassicaceae
Brassicaceae   (Mustard Family)


(Cruciferae [H&C]) Our taxonomy and nomenclature follows the treatments of Flora of North America Vol. 7 (2010) and Rollins (1993a, 1993b, 1993c), unless otherwise noted. Many of the authorities for the combinations in those treatments disagree with those used in H&C.

Family Synonyms:
» Cruciferae

» Rollins 1993a = Rollins, R. C. 1993a. The Cruciferae of Continental North America. Stanford Univ. Press, Stanford, CA. 976 p.
» Rollins 1993b = Rollins, R. C. 1993b. Brassicaceae [Cruciferae], mustard family. In: Hickman, J. C., ed. 1993. The Jepson Manual: Higher Plants of California. Univ. of California Press, Berkeley.
» Rollins 1993c = Rollins, R. C. 1993c. New taxa and names in the Cruciferae of California. Harvard Papers in Botany 4: 43-48.

Family treatment authored by Peter F. Zika; last updated 12/23/2011 by David Giblin
Taxon (native species in boldface) # Synonyms Common Names
Alliaria petiolata (M. Bieb.) Cavara & Grande   [FNA7, IFBC] 1 garlic mustard
Alyssum alyssoides (L.) L.   [FNA7, H&C] 0 small alison, pale alyssum or madwort
Alyssum desertorum Stapf   [FNA7, H&C] 0 desert alyssum
Alyssum murale Waldst. & Kit.   [FNA7] 0 yellowtuft
Arabidopsis lyrata (L.) O’Kane & Al-Shehbaz ssp. kamchatica (Fischer ex de Candolle) O’Kane & Al-Shehbaz   [FNA7] 4 lyreleaved cress
Arabidopsis thaliana (L.) Heynh.   [FNA7, IFBC] 0 mouse-ear cress, thalecress
Arabis crucisetosa Constance & Rollins   [FNA7, H&C] 0 crosshaired rockcress
Arabis eschscholtziana Andrz.   [FNA7] 2 Pacific coast rockcress
Arabis furcata S. Watson   [FNA7, H&C] 2 fork-haired or Cascade or Columbia Gorge rockcress
Arabis nuttallii (Kuntze) B. L. Robinson   [FNA7, H&C] 3 Nuttall's rockcress
Arabis olympica Piper   [FNA7] 1 Olympics rockcress
Armoracia rusticana P. Gaertn., B. Mey. & Scherb.   [FNA7, IFBC] 1 horseradish
Athysanus pusillus (Hook.) Greene   [FNA7, H&C] 3 sandweed
Barbarea orthoceras Ledeb.   [FNA7, H&C] 4 American wintercress or yellow rocket
Barbarea verna (Mill.) Asch.   [FNA7, H&C] 4 Belle Isle cress, early wintercress, landcress, early yellow rocket, scurvygrass
Barbarea vulgaris Ait.   [FNA7, Rollins, 1993] 5 bitter wintercress, yellow rocket
Berteroa incana (L.) DC.   [FNA7, H&C] 1 hoary alyssum
Boechera atrorubens (Suksdorf ex Greene) Windham & Al-Shehbaz   [FNA7] 2 black-flowered rockcress
Boechera calderi (G. A. Mulligan) Windham & Al-Shehbaz   [FNA 7] 1 Calder's rockcress
Boechera cascadensis Windham & Al-Shehbaz   [FNA7] 1 Cascades rockcress
Boechera cusickii (S. Watson) Al-Shehbaz   [FNA7] 1 Cusick's rockcress
Boechera divaricarpa (A. Nelson) Á. Löve & D. Löve   [FNA7] 6
Boechera drepanoloba (Greene) Windham & Al-Shehbaz 4
Boechera grahamii (Lehmann) Windham & Al-Shehbaz   [FNA7] 1 Graham's rockcress
Boechera lemmonii (S. Watson) W.A. Weber   [FNA7] 2 Lemmon's rockcress
Boechera lyallii (S. Watson) Dorn   [FNA7] 3 Lyall's rockcress
Boechera microphylla (Nuttall) Dorn   [FNA7] 3 small-leaved rockcress
Boechera paddoensis (Rollins) Windham & Al-Shehbaz   [FNA7] 1 Mt. Adams rockcress
Boechera pauciflora (Nuttall) Windham & Al-Shehbaz   [FNA7] 5 small-flowered rockcress
Boechera paupercula (Greene) Windham & Al-Shehbaz   [FNA7] 1
Boechera pendulocarpa (A. Nelson) Windham & Al-Shehbaz   [FNA7] 2
Boechera puberula (Nuttall) Dorn   [FNA7] 1 hoary or Blue Mountain rockcress
Boechera retrofracta (Graham) Á. Löve & D. Löve   [FNA7] 4
Boechera sparsiflora (Nutt.) Dorn   [FNA7] 6 elegant rockcress, slender rockcress
Boechera stricta (Graham) Al-Shehbaz   [FNA7] 3 Drummond's or Canadian rockcress
Boechera suffrutescens (S. Wats.) Dorn 1 woody rockcress
Brassica juncea (L.) Czern.   [FNA7, H&C] 4 Chinese, Indian, brown or leaf mustard
Brassica napus L.   [FNA7, Stace, 1997] 1 rape, rapeseed, winter rape
Brassica nigra (L.) W.D.J. Koch   [FNA7, H&C] 1 black mustard
Brassica oleracea L.   [FNA7] 1 cabbage
Brassica rapa L.   [FNA, JPM2] 3 wild turnip, field mustard, common mustard
Cakile edentula (Bigelow) Hook. ssp. edentula    [FNA7, Rollins, 1993] 3 sea rocket, American sea rocket
Cakile maritima Scop.   [H&C] 2 sea rocket, European sea rocket
Camelina microcarpa Andrz. ex DC.   [FNA7, H&C] 1 littlepod false flax, hairy false flax
Capsella bursa-pastoris (L.) Medik.   [FNA7, H&C] 1 shepherd's-purse
Cardamine angulata Hook.   [FNA7, H&C] 4 seaside or angled bittercress
Cardamine bellidifolia L.   [FNA7] 2 alpine bittercress
Cardamine breweri S. Wats.   [FNA7] 7 Brewer's bittercress
Cardamine cordifolia A. Gray   [FNA7] 3 heart-leaved or large mountain bittercress, Lyall's bittercress
Cardamine corymbosa Hook. f. 0 New Zealand bittercress
Cardamine flexuosa With.   [FNA7, Stace, 1997] 4 wavy bittercress
Cardamine hirsuta L.   [FNA7, Stace, 1997] 0 hairy bittercress
Cardamine nuttallii Greene   [FNA7] 10 slender or Nuttall's toothwort, beautiful bittercres
Cardamine occidentalis (S. Watson ex B.L. Rob.) Howell   [FNA7, H&C] 2 western bittercress
Cardamine occulta Hornem. 0 wood bittercress
Cardamine oligosperma Nutt.   [FNA7, H&C] 1 little western bittercress, few-seeded bittercress
Cardamine pensylvanica Muhl. ex Willd.   [FNA7, H&C] 3 Pennsylvania or quaker bittercress
Cardamine pratensis L.   [FNA7, Stace 1997] 1 cuckooflower
Cardamine umbellata Greene   [FNA7] 1 Siberian or umbellate bittercress
Caulanthus lasiophyllus (Hook. & Arn.) Payson   [FNA7] 5 cutleaf thelypody
Chorispora tenella (Pall.) DC.   [FNA7, H&C] 2 blue mustard, crossflower
Cochlearia groenlandica L.   [FNA7, IFBC] 5 Danish scurvygrass; scurvy-grass; spoonwort
Conringia orientalis (L.) Dumort.   [FNA7, H&C] 0 hare's-ear or treacle mustard
Cusickiella douglasii (A. Gray) Rollins   [FNA7, Rollins, 1993] 1 Douglas' whitlow-grass, alkali false whitlow-grass
Descurainia incisa (Engelm.) Britton ssp. incisa    [FNA7, Rollins, 1993] 5 cut-leaved tansymustard
Descurainia longepedicellata (E. Fournier) O.E. Shulz   [FNA7] 4 narrow tansymustard, mountain tansymustard, sticky tansymustard
Descurainia nelsonii (Rydb.) Al-Shehbaz & Goodson   [FNA7] 2 Nelson's or sagebrush tansymustard
Descurainia pinnata (Walter) Britton ssp. brachycarpa (Richardson) Detling   [FNA7, Rollins, 1993] 2 western or shortpod tansymustard
Descurainia sophia (L.) Webb ex Prantl   [FNA7, H&C] 0 flixweed
Draba albertina Greene   [FNA7, Rollins, 1993] 3 slender whitlow-grass, Alaska draba
Draba aurea Vahl ex Hornemann   [FNA7, H&C] 3 golden draba or whitlow-grass
Draba aureola S. Watson   [FNA7, H&C] 1 Mt. Lassen draba or whitlow-grass, great alpine or alpine whitlow-grass
Draba cana Rydb.   [FNA7] 2
Draba crassifolia Graham   [FNA7, H&C] 2 thick-leaved or Rocky Mountain draba, snowbed whitlow-grass
Draba densifolia Nutt.   [FNA7, H&C] 5 Nuttall's draba, dense-leaf whitlow-grass
Draba incerta Payson   [FNA7, H&C] 6
Draba lonchocarpa Rydb.   [FNA7] 10 lancefruit draba
Draba nemorosa L.   [FNA7, H&C] 4 woodland whitlow-grass, woods draba
Draba novolympica Payson & H. St. John   [FNA7] 1
Draba oligosperma Hook.   [FNA7, Rollins, 1993] 6 few-seeded draba or whitlow-grass
Draba platycarpa Torr. & A. Gray   [FNA7, Rollins, 1993] 2 broad-pod whitlow-grass
Draba praealta Greene   [FNA7, H&C] 5 tall whitlow-grass or draba
Draba reptans (Lam.) Fernald   [FNA7, Rollins, 1993] 6 Carolina whitlow-grass
Draba ruaxes Payson & H. St. John   [FNA7, Rollins, 1993] 1 coast mountain whitlow-grass or draba
Draba stenoloba Ledeb.   [FNA7] 5
Draba taylorii G.A. Mulligan & Al-Shehbaz   [Draft Revised H&C] 0 Taylor's draba
Draba verna L.   [FNA7, Rollins, 1993] 6 spring whitlow-grass
Eruca vesicaria (L.) Cav. ssp. sativa (Mill.) Thell.   [FNA7, Rollins, 1993] 2 garden rocket
Erucastrum gallicum (Willd.) O.E. Schulz   [FNA7, H&C] 2 dog mustard, hairy rocket
Erysimum arenicola S. Watson   [FNA7, Rollins, 1993] 4 sand-dwelling wallflower
Erysimum capitatum (Douglas ex Hook.) Greene var. capitatum    [FNA7, Rollins, 1993] 4 rough wallflower, prairie rocket
Erysimum cheiranthoides L.   [FNA7, H&C] 2 wormseed wallflower, treacle mustard
Erysimum cheiri (L.) Crantz   [FNA7, Stace, 1997] 1 wallflower
Erysimum inconspicuum S. Watson) MacMill.   [FNA7, H&C] 1 small-flowered rocket, small wallflower
Erysimum occidentale (S. Watson) B.L. Rob.   [FNA7, H&C] 2 pale or western wallflower
Erysimum repandum L.   [FNA7, H&C] 1 spreading wallflower
Euclidium syriacum (L.) R. Br.   [FNA7, H&C] 2 Syrian mustard, euclidium
Hesperis matronalis L.   [FNA7, H&C] 0 dame's rocket, dame's violet, mother-of-the-evening
Hirschfeldia incana (L.) Lagr.-Fossat   [Draft Revised H&C] 1 Mediterranean hoary mustard, short-podded mustard, summer mustard
Hornungia procumbens (L.) Hayek   [FNA7] 7 ovalpurse
Idahoa scapigera (Hook.) A. Nelson & J.F. Macbr.   [FNA7, H&C] 1 scalepod, flatpod
Isatis tinctoria L.   [FNA7, H&C] 0 woad, Dyer's woad
Lepidium appelianum Al-Shehbaz   [FNA7] 3 globepodded hoarycress, whitetop
Lepidium campestre (L.) R. Br.   [FNA7, H&C] 2 field peppergrass or pepperwort, field cress, pepperwort
Lepidium chalepense L.   [FNA7] 5 Asian white-top, chalapa or lens-podded hoarycress
Lepidium densiflorum Schrad.   [FNA7] 7 prairie or common peppergrass
Lepidium dictyotum A. Gray   [FNA7] 3
Lepidium didymum L.   [FNA7] 1 lesser swinecress or wartcress
Lepidium draba L.   [FNA7, Abrams] 3 heart-podded hoarycress, hoary pepperwort
Lepidium heterophyllum Benth.   [FNA7, H&C] 0 Smith's pepperwort
Lepidium latifolium L.   [FNA7, H&C] 1 dittander, broad-leaved pepperwort or peppergrass
Lepidium nitidum Nutt. ex Torr. & A. Gray   [FNA7, H&C] 4 shining peppergrass
Lepidium oxycarpum Torr. & A. Gray   [FNA7, H&C] 1 sharpfruited or forked pepperwort
Lepidium perfoliatum L.   [FNA7, H&C] 1 clasping peppergrass or pepperwort, yellow-flowered or clasping-leaved or round-leaved peppergrass
Lepidium ramosissimum A. Nelson   [FNA7, H&C] 2 branched peppergrass
Lepidium sativum L.   [FNA7, H&C] 0 garden cress or pepperwort
Lepidium strictum (S. Watson) Rattan   [FNA] 0 upright peppergrass
Lepidium virginicum L. ssp. menziesii (de Candolle) Thellung   [FNA7] 8 tall peppergrass
Lepidium virginicum L. ssp. virginicum    [FNA7] 2
Lobularia maritima (L.) Desv.   [FNA7, H&C] 3 sweet alyssum, sweet alison
Lunaria annua L.   [FNA7, H&C] 2 honesty, money plant
Microthlaspi perfoliatum (L.) F.K. Mey.   [FNA7] 1 perfoliate pennycress
Nasturtium microphyllum Boenn. ex Rchb.   [FNA7] 0
Nasturtium officinale W. T. Aiton   [FNA7] 2 watercress
Neslia paniculata (L.) Desv.   [FNA7, H&C] 1 ball mustard
Noccaea fendleri (A. Gray) Holub ssp. glauca (A. Nelson) Al-Shehbaz & M. Koch   [FNA7] 7 wild candytuft
Phoenicaulis cheiranthoides Nutt.   [FNA7, H&C] 8 daggerpod
Physaria alpestris Suksd.   [FNA7, H&C] 1 alpine or Washington twinpod
Physaria didymocarpa (Hook.) A. Gray ssp. didymocarpa    [FNA7] 2 common twinpod
Physaria douglasii (S. Watson) O’Kane & Al-Shehbaz ssp. douglasii    [FNA7] 2 Douglas's bladderpod
Physaria douglasii (S. Watson) O'Kane & Al-Shehbaz ssp. tuplashensis (Rollins, K.A. Beck & Caplow) O'Kane & Al-Shehbaz   [FNA7] 1 White Bluffs bladderpod
Physaria geyeri (Hook.) A. Gray ssp. geyeri    [FNA7] 4 Geyer's twinpod
Physaria occidentalis (S. Watson) O’Kane & Al-Shehbaz ssp. occidentalis    [FNA7] 4 western bladderpod
Physaria oregona S. Watson   [FNA7, H&C] 2 Oregon twinpod
Polyctenium fremontii (Wats.) Greene   [FNA7, H&C] 1 combleaf
Raphanus raphanistrum L.   [FNA7, H&C] 0 jointed charlock, wild radish
Raphanus sativus L.   [FNA7, H&C] 0 radish, garden radish
Rorippa austriaca (Crantz) Besser   [FNA7] 4 Austrian yellowcress or field-cress
Rorippa columbiae (Suksd. ex B.L. Rob.) Suksd. ex T.J. Howell   [FNA7, H&C] 5 Columbia yellowcress or cress
Rorippa curvipes Greene   [FNA7] 3
Rorippa curvisiliqua (Hook.) Bessey ex Britton   [FNA7, H&C] 7 western yellowcress
Rorippa palustris (L.) Besser   [FNA7, IFBC] 12 marsh or hispid yellowcress
Rorippa sinuata (Nutt.) A.S. Hitchc.   [FNA7] 0 spreading yellowcress
Rorippa sylvestris (L.) Besser   [FNA7] 0 creeping yellowcress
Rorippa tenerrima Greene   [FNA7, not in H&C] 0 Modoc yellowcress
Sandbergia perplexa (L. F. Henderson) Al-Shehbaz   [FNA7] 4
Sandbergia whitedii (Piper) Greene   [FNA7] 2
Sinapis alba L.   [FNA7] 1 white mustard
Sinapis arvensis L.   [FNA7] 5 charlock, corn or wild mustard
Sisymbrium altissimum L.   [FNA7, H&C] 0 tall rocket, tumble or Jim Hill mustard
Sisymbrium linifolium (Nutt.) Nutt.   [FNA7] 3 lava cress, rush mustard, flax-leaved or Salmon River plainsmustard
Sisymbrium loeselii L.   [FNA7, H&C] 0 false london rocket, Loesel's tumblemustard
Sisymbrium officinale (L.) Scop.   [FNA7, H&C] 3 hedge mustard
Smelowskia americana Rydb.   [FNA7] 2 alpine or Siberian smelowskia
Smelowskia ovalis M.E. Jones   [FNA7, H&C] 1 short-fruited smelowskia
Streptanthella longirostris (S. Watson) Rydb.   [FNA7, H&C] 1 streptanthella, long-beaked fiddle mustard
Subularia aquatica L. ssp. americana G.A. Mulligan & Calder   [FNA7] 2 awlwort
Teesdalia nudicaulis (L.) R. Br.   [FNA7, H&C] 1 shepherd's cress
Thelypodium howellii S. Watson ssp. howellii    [FNA7] 0 Howell's thelypody
Thelypodium integrifolium (Nutt.) Endl. ssp. integrifolium    [FNA7] 4 entire-leaved thelypody
Thelypodium laciniatum (Hooker) Endlicher in W. G. Walpers   [FNA7] 2 thick-leaved or cut-leaf thelypody
Thelypodium milleflorum A. Nelson   [FNA7] 1 many flowered thelypody
Thelypodium sagittatum (Nutt.) Endl. ssp. sagittatum    [FNA7] 2 slender or sagittate thelypody
Thlaspi arvense L.   [FNA7, H&C] 1 field pennycress, fanweed
Thysanocarpus curvipes Hook.   [FNA7, H&C] 2 sand fringepod, lacepod
Turritis glabra L.   [FNA7, Abrams] 3 tower mustard

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