Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera
    Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
   
   

Key to Brassicaceae

View taxon page for Brassicaceae

 

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

Key to Groups Based Primarily on Flowering Material

1. Hairs  or 0

2. Cauline leaves 0 or at least some basally lobed to clasping ..... Group 1

2' Cauline leaves always present, not basally lobed or clasping ..... Group 2

1' At least some hairs branched

3. Ovary, young fruit  ..... Group 3

3' Ovary, young fruit variously shaped, not  ..... Group 4

Group 1:

1. Plant cauline leaves 0

2. All or at least early flowers 1 from   ..... IDAHOA

2' All flowers in racemes

3. Flowers yellow ..... DIPLOTAXIS

3' Flowers white, lavender, or purple

4. Perennial herbpetals 4–5.5(7) mm ..... CARDAMINE

4' Annualpetals 1.2–1.5 mm ..... SUBULARIA

1' Plant not cauline leaves present

5. Cauline leaves petioled; plant aquatic, rooting from proximal  ..... NASTURTIUM

5' Cauline leaves ; plant terrestrial, not rooting from proximal 

6. Stamens 2 ..... LEPIDIUM (2)

6' Stamens 6(4)

7. All stamens well  beyond petalsovary stalk above receptacle distinct in flower

8. Sepals  to petals yellow to white, 1.3–2 cm ..... STANLEYA

8' Sepals generally ± petals purple, lavender, or white, 0.6–1.2(1.6) cm ..... THELYPODIUM (2)

7' At least some stamens ovary stalk above receptacle 0 in flower

9. Stamens in 3 pairs of unequal length; petals crinkled or channeled

10. Fruit seed wings 0 ..... CAULANTHUS (3)

10' Fruit flattened; seeds generally winged ..... STREPTANTHUS

9' Stamens 4 long, 2 short; petals generally not crinkled, not channeled

11. Ovary, young fruit with 1–2(4) ovules or seeds

12. Young fruit not  ..... LEPIDIUM (2)

12' Young fruit 

13. Petals yellow ..... ISATIS

13' Petals white or ± purple-tinged ..... THYSANOCARPUS

11' Ovary, young fruit with (4)6–300 ovules or seeds

14. Petals yellow

15. Young fruit  ..... CAULANTHUS (3)

15' Young fruit  to 

16. Petals (6)8–30 mm, clawed ..... BRASSICA (2)

16' Petals 0.5–9(12) mm (or 0), clawed or not, narrowed to base

17. Cauline leaves cordate-clasping ..... CONRINGIA

17' Cauline leaves basally lobed

18. Ovary, young fruit stem angular distally ..... BARBAREA

18' Ovary, young fruit spheric to ovoid or stem generally not angular distally ..... RORIPPA

14' Petals white, lavender, pink, purple, or violet

19. Ovary, young fruit , round, or 

20. Perennial herbseeds smooth ..... NOCCAEA

20' Annualseeds striate ..... THLASPI

19' Ovary, young fruit 

21. Petals not clawed, gradually narrowed to base ..... BOECHERA

21' Petals clawed

22. Petals 15–30 mm ..... BRASSICA (2)

22' Petal 4.5–12(15)

23. Young fruit  ..... CAULANTHUS (3)

23' Young fruit  to  ..... THELYPODIUM (2)

Group 2:

1. Flowers 

2. Ovary, young fruit ovules or seeds many ..... STREPTANTHUS (2)

2' Ovary, young fruit  to obcordate; ovules or seeds 2 ..... [IBERIS]

1' Flowers 

3. Stamens 2 or 4

4. Ovary  ..... CARDAMINE (4)

4' Ovary broader, not 

5. Ovary, young fruit with 10–24 ovules or seeds ..... HORNUNGIA

5' Ovary, young fruit with 2–4 ovules or seeds ..... LEPIDIUM (2)

3' Stamens 6

6. Ovary, young fruit  to ovoid, obovate, round, spheric, or , occasionally of 2 segments of such shapes

7. Petals 15–30 mm, purple to lavender (white); style, stalk above receptacle well developed ..... LUNARIA

7' Petals 0.5–12(15) mm, yellow to cream or white (lavender); style, stalk above receptacle generally 0

8. Ovary, young fruit with 24–80 ovules or seeds ..... RORIPPA (2)

8' Ovary, young fruit with 1–12(14) ovules or seeds

9. Ovary, young fruit 2-segmented

10. Petals cream or pale yellow, veins dark brown or purple; ovules 4–6 ..... [CARRICHTERA]

10' Petals white, lavender, or yellow, dark veins 0; ovules 1 or 2(4)

11. Plant stiff-hairy below; style distinct; petals yellow ..... RAPISTRUM

11' Plant glabrousstyle 0; petals white to lavender ..... CAKILE (2)

9' Ovary, young fruit unsegmented

12. Ovules or seeds 1–2

13. Young fruit  to  ..... LEPIDIUM (2)

13' Young fruit  ..... THYSANOCARPUS

12' Ovules or seeds 6–14

14. Perennial herbroots fleshystem 5–12(20) dm;  leaves 1.5–12 dm ..... ARMORACIA

14' Biennial or  herbfleshy roots 0; stem (0.1)0.5–3(4) dm;  leaves 0.1–1 dm ..... COCHLEARIA

6' Ovary, young fruit  (narrowly  or awl-shaped)

15. Cauline leaves compound

16. Plant aquatic, rooting from proximal stem  ..... NASTURTIUM

16' Plant terrestrial, not rooting from proximal stem  ..... CARDAMINE (4)

15' Cauline leaves , occasionally shallowly divided

17. Plant with multicellular stalked glands ..... CHORISPORA

17' Glands 0

18. Stamens ± equal in length, well-exserted beyond petals or all flower parts 

19. Petals yellow to white; filament bases hairy or  ..... STANLEYA

19' Petals white, lavender, or purple; filaments glabrous

20. Fruit ±  on receptacle ..... CAULANTHUS (3)

20' Fruit stalked above receptacle ..... THELYPODIUM

18' Stamens 4 long, 2 short, or in 3 pairs of unequal length

21. Stamens in 3 pairs of unequal length

22. Fruit seeds wingless ..... CAULANTHUS (3)

22' Fruit distinctly to ± flattened; seeds generally winged at least at tip

23. Sepals 4–8 mm; stems (0.7)1–8 dm ..... STREPTANTHUS (2)

23' Sepals 2.8–3.2 mm; stem 0.5–2 dm

24. Longest stamens with fused filaments and sterile anthers ..... SIBAROPSIS

24' Longest stamens with free filaments and fertile anthers ..... STREPTANTHELLA

21' Stamens 4 long, 2 short

25. Petals dark-veined

26. Perennial herb or subshrubglabrousleaves  or  ..... HESPERIDANTHUS

26' Annual, generally hairy; leaves generally pinnately lobed

27. Fruit corky, , lower segment rudimentary, seedless ..... RAPHANUS

27' Fruit not corky, , lower segment well developed, seeded

28. Fruit  3-veined; terminal segment (0)1–6-seeded ..... COINCYA

28' Fruit  1-veined; terminal segment seedless ..... ERUCA

25' Petals not dark-veined

29. Cauline leaves 

30. Biennial or  herb with ovules 28–90 per ovary ..... BOECHERA

30' Perennial herb with rhizomes or tubersovules 6–28 per ovary ..... CARDAMINE (4)

29' At least proximal cauline leaves pinnately divided, lobed, wavy, or 

31. Petals white, pink, lavender, or purple

32. Ovules or seeds (1)2(4) ..... CAKILE (2)

32' Ovules or seeds many

33. Leaf lateral   to thread-like,  ..... SIBARA

33' Leaf lateral  not  to thread-like, generally 

34. At least most distal leaves  or  ..... CAULANTHUS (3)

34' All leaves pinnately lobed, divided or dissected

35. Seeds wingless ..... CARDAMINE (4)

35' Seeds winged ..... PLANODES

31' Petals generally yellow

36. Inflorescence bracted at least below ..... [ERUCASTRUM]

36' Inflorescence generally not bracted

37. Ovary, young fruit 2-segmented

38. Sepals generally  to fruit valves 1-veined ..... BRASSICA

38' Sepals  to fruit valves 3–7-veined

39. Stigma seeds ovoid ..... HIRSCHFELDIA

39' Stigma 2-lobed; seeds spheric ..... SINAPIS

37' Ovary, young fruit unsegmented

40. Stigma  ..... RORIPPA (2)

40' Stigma 2-lobed

41. Seeds in 2 rows; fruit valves 1-veined ..... DIPLOTAXIS

41' Seeds in 1 row; fruit valves 3-veined ..... SISYMBRIUM

Group 3:

1. Inflorescence bracted throughout ..... TROPIDOCARPUM

1' Inflorescence not bracted or only most proximal few flowers bracted

2. Plant cauline leaves 0

3. Sepals 4–5 mm;  of previous year persistent ..... ANELSONIA

3' Sepals 1.5–2.5 mm;  of previous year not persistent ..... DRABA (3)

2' Plant not ; at least 1 cauline  present

4. Cauline leaves , basally lobed to  or clasping

5. All hairs tree-like ..... PHOENICAULIS

5' Hairs various, not all tree-like

6. Hairs stalked,  (few simple) ..... ARABIS (2)

6' Hairs , or if stalked then not , or a mixture of > 1 type

7. Annualstigma 2-lobed; petals dark-veined ..... CAULANTHUS

7' Biennial or  herbstigma petals not dark-veined

8. Petals ± white (pink or purple); young fruit  to ; plants glaucous distally ..... TURRITIS

8' Petals white, pink, lavender, or purple; young fruit variously oriented (appressed); plants not glaucous distally

9. Fruit flattened ..... BOECHERA (2)

9' Fruit  ..... TRANSBERINGIA

4' Cauline leaves petioled, if  not basally lobed, , or clasping

10. All hairs  ..... ERYSIMUM

10' Hairs  or stalked and branched

11. Stigma 2-lobed

12. Petals (6.5)8–10(12) mm ..... STRIGOSELLA

12' Petals (13)15–30 mm

13. Sepals 5–8 mm; hairs , stalked-forked ..... HESPERIS

13' Sepals 10–15 mm; hairs many-branched ..... MATTHIOLA

11' Stigma 

14. Cauline leaves 1–3-pinnately divided to dissected or comb-like

15. Petals yellow; hairs many-branched ..... DESCURAINIA

15' Petals white to ± purple; hairs generally a mixture of , 2-forked, many-branched

16. Perennial herbleaves rigid ..... POLYCTENIUM

16' Annualleaves not rigid ..... SIBARA

14' Cauline leaves , wavy (lobed)

17. At least some leaves lobed or wavy ..... HALIMOLOBOS

17' All leaves  or 

18. Petals yellow ..... DRABA (3)

18' Petals white, lavender, pink, or purple.

19. Petals (4)5–20 mm; seeds winged

20. Fruit  or , generally < 2.5 mm wide; branched hairs on  surface generally 2–4-rayed ..... ARABIS (2)

20' Fruit generally , occasionally  or , >= 2 mm wide; branched hairs on  surface 2–12-rayed ..... BOECHERA (2)

19' Petals 2–4(5) mm; seeds wingless

21. Fruit seeds in 1 row ..... ARABIDOPSIS

21' Fruit flat; seeds in 2 rows ..... DRABA (3)

Group 4:

1. Plant cauline leaves 0

2. Ovules or seeds 1–4 ..... CUSICKIELLA (2)

2' Ovules or seeds >= 10

3. Petals yellow to orange ..... DRABA (3)

3' Petals white, lavender, rose, or purple

4. Sepals 4–5 mm;  of previous year persistent ..... ANELSONIA

4' Sepals 1.5–3 mm;  of previous year not persistent ..... DRABA (3)

1' Plant not ; at least 1 cauline  present

5. Cauline leaves , basally lobed, , or clasping

6. Perennial herb with well-developed woody hairs many-branched ..... PHOENICAULIS

6' Annual or biennial (perennial herb), woody  0; hairs a mixture of different types

7. Petals white (pink); at least some branched hairs  ..... CAPSELLA

7' Petals yellow (white); branched hairs stalked, not  ..... CAMELINA

5' Cauline leaves petioled, if  then not basally lobed or clasping

8. Inflorescence bracted throughout ..... TROPIDOCARPUM

8' Inflorescence not bracted or occasionally most proximal flowers bracted

9. Petals strongly 2-lobed ..... BERTEROA

9' Petals  or notched

10. Inflorescence 1-sided; young fruit annual ..... ATHYSANUS

10' Inflorescence not 1-sided; young fruit not annual to subshrub

11. Cauline leaves only with , 2-rayed hairs ..... LOBULARIA

11' Cauline leaves with various hair types but never only as above

12. At least some filaments winged, , or appendaged

13. Annualstyle 0.3–1.6 mm ..... ALYSSUM (2)

13' Perennial herbstyle 4–12 mm ..... [AUBRIETA]

12' All filaments wingless, not , or unappendaged

14. Ovules or seeds 1 or 2, near ovary or fruit tip

15. Petals (10)12–15 mm ..... DITHYREA

15' Petals 0.9–3(4) mm

16. Petals 0.9–1.3 mm; ovaries, young fruit ovoid ..... EUCLIDIUM

16' Petals 1.5–3(4) mm; ovaries, young fruit round to obovate, flat ..... ALYSSUM (2)

14' Ovules or seeds 4–100, 

17. Sepals  to oblong-linear, petals narrowly oblanceolate to linear ..... LYROCARPA

17' Sepals  to  to petals ovate, obovate, spoon-shaped, oblong, or oblanceolate

18. Cauline leaves  or  (wavy)

19. Leaf hairs , ± , webbed or not ..... PHYSARIA

19' Leaf hairs , cross-shaped, tree-like, or a mixture of 2 or more of types, never only sessile-stellate

20. Young fruit with 1–4 seeds ..... CUSICKIELLA (2)

20' Young fruit with > 4 seeds ..... DRABA (3)

18' Cauline leaves 1–3-pinnately divided or comb-like

21. Perennial herb with well-developed 

22. Leaves rigid,   ..... POLYCTENIUM

22' Leaves not rigid,  obovate or  ..... SMELOWSKIA

21' Annual or biennial

23. Petals yellow; most or all hairs many-branched ..... DESCURAINIA

23' Petals white; hairs  or  ..... HORNUNGIA

Key to Groups Based on Fruiting Material

1. Fruit silicle

2. Hairs  or 0 ..... Group 5

2' At least some hairs branched ..... Group 6

1' Fruit silique

3. At least some hairs branched ..... Group 7

3' Hairs  or 0 ..... Group 8

Group 5:

1. Fruit transversely 2-segmented

2. Fruit corky; glabrous; coastal, especially beaches ..... CAKILE

2' Fruit not corky; hairy; inland habitats

3. Cauline leaves 1- or 2-pinnately divided; fruit  strongly terminal segment seedless, flattened ..... [CARRICHTERA]

3' Cauline leaves fruit   to , straight; terminal segment 1(3)-seeded, spheric or ovoid ..... RAPISTRUM

1' Fruit unsegmented

4. Fruit flat parallel to septum, or weakly flat perpendicular to septum

5. Cauline leaves 0

6. Fruit  1 from  seeds winged; plants terrestrial ..... IDAHOA

6' Fruits in racemesseeds wingless; plants aquatic ..... SUBULARIA

5' Cauline leaves 1–many

7. Fruit 3–5 cm, 2–3.5 cm wide; stalk above receptacle 0.7–1.8 cm ..... LUNARIA

7' Fruit <= 1.2 cm, <= 0.5 cm wide; stalk above receptacle 0(0.5) mm

8. Fruit ovules or seeds 5–90 per fruit

9. Fruit  midveins distinct; ovulesseeds 8–14 per fruitpetals white ..... COCHLEARIA

9' Fruit  midveins obscure; ovulesseeds 18–90 per fruitpetals yellow ..... RORIPPA

8' Fruit ovules or seeds 1–2(4) per fruit

10. Fruit  to wings 0, radiating veins 0 ..... LEPIDIUM (3)

10' Fruit , flat parallel to septum, winged, veins generally radiating ..... THYSANOCARPUS

4' Fruit clearly flat perpendicular to septum

11. Cauline leaves , basally lobed, , or clasping

12. Fruit , winged, with 1 seed at ± middle ..... ISATIS

12' Fruit generally  to  to descending, not winged, 2–16-seeded

13. Seeds 2 per fruit ..... LEPIDIUM (3)

13' Seeds 2–16 per fruit

14. Seeds smooth (minutely net-like), yellow-brown to brown ..... NOCCAEA

14' Seeds concentrically striate, ± black-brown ..... THLASPI

11' Cauline leaves petioled (0), if  then not basally lobed, , or clasping

15. Ovules or seeds 8–24 per fruit

16. Perennial herb 5–12(20) dm, roots fleshy ..... ARMORACIA

16' Annual 0.2–3 dm, fleshy roots 0 ..... HORNUNGIA

15' Ovules or seeds 2(4) per fruit

17. Raceme not elongated in fruitseeds winged ..... [IBERIS]

17' Racemes elongated in fruitseeds wingless ..... LEPIDIUM (3)

Group 6:

1. Plant cauline leaves 0

2. Seedovules to 4 per fruit ..... CUSICKIELLA

2' Seedovules >= 10 per fruit

3. Seed with club-shaped hairsfruit valves with distinct net-like lateral veins ..... ANELSONIA

3' Seed surface minutely net-like; fruit valves obscurely lateral-veined ..... DRABA (2)

1' Plant not ; at least 1 cauline  present

4. Cauline leaves , basally lobed, , or clasping

5. Fruit obtriangular-obcordate, flat perpendicular to septumstyle 0.2–0.7 mm ..... CAPSELLA

5' Fruit pear-shaped to obovoid, flat parallel to septumstyle 1–3.5 mm ..... CAMELINA

4' Cauline leaves petioled, if  then not basally lobed, , or clasping

6. Fruit flat perpendicular to septum, or 4-valved and septum 0

7. Inflorescence bracted throughout ..... TROPIDOCARPUM

7' Inflorescence not or only basally bracted

8. Seeds 2 per fruit; fruit spectacle-shaped ..... DITHYREA

8' Seeds 4–100 per fruit; fruit not spectacle-shaped

9. Leaves generally comb-like, rigid ..... POLYCTENIUM

9' Leaves  or variously divided, not comb-like or rigid

10. Fruit obcordate; stigma prominently 2-lobed ..... LYROCARPA

10' Fruit not obcordate; stigma 

11. Style 2–9 mm;  herb ..... PHYSARIA (2)

11' Style <= 0.1 mm; annual ..... HORNUNGIA

6' Fruit flat parallel to septumovoid, or 4-angled

12. Inflorescence 1-sided; fruit  ..... ATHYSANUS

12' Inflorescence not 1-sided; fruit not 

13. Cauline leaves 1–3-pinnately divided

14. Annual or biennialpetals yellow ..... DESCURAINIA

14' Perennial herbpetals white, lavender, or purple ..... SMELOWSKIA

13' Cauline leaves , or wavy

15. Seeds 1–2(4) per fruit

16. Fruit ovoid, occasionally 4-sided ..... EUCLIDIUM

16' Fruit , flat parallel to septum

17. Hairs , occasionally also petals yellow ..... ALYSSUM

17' Hairs 2-rayed only; petals white to purple ..... LOBULARIA

15' Seeds (4)6–many per fruit

18. Filaments appendaged; petals deeply 2-lobed ..... BERTEROA

18' Filaments not appendaged; petals  to notched

19. Hairs ± fruit septum tip generally with midvein ..... PHYSARIA (2)

19' Some hairs stalked, generally of > 1 type; fruit septum tip without midvein ..... DRABA (2)

Group 7:

1. Plant cauline leaves 0

2. Seeds with club-shaped hairsfruit valves with distinct net-like lateral veins ..... ANELSONIA

2' Seed surface minutely net-like; fruit valves obscurely lateral-veined ..... DRABA (2)

1' Plant not cauline leaves 1 to many

3. Cauline leaves , basally lobed to  or clasping

4. Fruit flat parallel to septum

5. Plant with many-branched, small, tree-like hairsovules or seeds (6)8–16(18) per fruit ..... PHOENICAULIS

5' Plant with , or few-rayed hairs, if hairs tree-like then ovules > 24

6. Branched hairs , 3–5-rayed; fruit straight,  to  or diverging, 0.6–2 mm wide ..... ARABIS

6' Branched hairs , few- to many-rayed, or tree-like; fruit arc-shaped to straight,  to pendent or  (erect), 1–6 mm wide ..... BOECHERA (2)

4' Fruit  or 4-angled

7. Seeds in 1 row; stigma 2-lobed; branched hairs 2-rayed ..... CAULANTHUS

7' Seeds in 2 rows; stigma ; branched hairs tree-like or 

8. Fruit  fruit , not  to  ..... TRANSBERINGIA

8' Fruit  fruit ± 4-angled,  to  ..... TURRITIS

3' Cauline leaves petioled, if  then not basally lobed, , or clasping

9. Inflorescence bracted throughout ..... TROPIDOCARPUM

9' Inflorescence not or only basally bracted

10. Plant hairs  and 2–5(8)-rayed,  hairs 0 ..... ERYSIMUM

10' Plant with other types of branched hairs hairs generally present

11. Stigma conic, prominently 2-lobed,  generally 

12' Seed wings 0

13. Fruit glabrous, constricted between seedshairs  ..... HESPERIS

13' Fruit hairy, not constricted between seeds; plants with at least some many-branched hairs ..... STRIGOSELLA

11' Stigma capitate, , if ± 2-lobed then  not 

14. Cauline leaves pinnately divided to dissected or comb-like

15. Fruit flat parallel to septum ..... SIBARA

15' Fruit  or flat perpendicular to septum

16. Leaves pinnately lobed or dissected, not rigid; fruit  ..... DESCURAINIA

16' Leaves generally comb-like, rigid; fruit ± flat perpendicular to septum ..... POLYCTENIUM

14' Cauline leaves  or  (wavy)

17. Fruit seeds in 1 row

18. Fruit glabrouscauline leaves  ..... ARABIDOPSIS

18' Fruit hairy; at least some cauline leaves  to wavy ..... HALIMOLOBOS

17' Fruit generally flat parallel to septumseeds in (1)2 rows

19. Fruit valves with elongate  hairs mixed with stalked-forked or smaller  ones ..... [AUBRIETA]

19' Fruit valves glabrous or with hairs of 1 size or type

20. Fruit narrowly seeds winged (wing 0) ..... BOECHERA (2)

20' Fruit  to  (linear); seeds wingless – if winged then cauline leaves 1 ..... DRABA (2)

Group 8:

1. Plant cauline leaves 0

2. Perennial herbovules or seeds 8–18 per fruitpetals white ..... CARDAMINE (2)

2' Annual (short-lived  herb); ovules or seeds 20–36 per fruitpetals yellow ..... DIPLOTAXIS (2)

1' Plant not ; at least 1 cauline  present

3. Plant glandular ..... CHORISPORA

3' Plant not glandular

4. Fruit 

5. Fruit winged, flat, , not segmented, 1-seeded ..... ISATIS

5' Fruit wings 0,  or angled, segmented, seeds generally >= 1

6. Style ± absent; plant glabrous ..... CAKILE

6' Style 1–5 mm; plant hairy ..... RAPHANUS

4' Fruit 

7. Fruit segmented

8. Seeds in 2 rows

9. Terminal fruit segment not flattened; petal veins same color as  ..... DIPLOTAXIS (2)

9' Terminal fruit segment flattened; petal veins darker than  ..... ERUCA

8' Seeds in 1 row

10. Fruit valves prominently 3–7-veined

11. Fruit (30)40–150-seeded; sepals  ..... COINCYA

11' Fruit 4–16(24)-seeded; sepals  or  ..... SINAPIS

10' Fruit valves obscurely veined or only midvein prominent

12. Inflorescence bracted ..... [ERUCASTRUM]

12' Inflorescence not bracted

13. Fruit  to , not  to terminal segment seedless or 1- or 2-seeded, if appressed then terminal segment seedless ..... BRASSICA

13' Fruit  to terminal segment 1- or 2-seeded ..... HIRSCHFELDIA

7' Fruit unsegmented

14. Fruit flat parallel to septum

15. Placenta margin flat in fruit; fruit valves coiled when  ..... CARDAMINE (2)

15' Placenta margin not flat in fruit; fruit valves not coiled when 

16. Seed wings 0

17. Stalk above receptacle 6–28 mm ..... STANLEYA (2)

17' Stalk above receptacle 1–4(5) mm

18. All cauline leaves pinnately dissectedsegments thread-like or  ..... SIBARA

18' At least some cauline leaves  to  or pinnately lobed, segments not thread-like or 

19. Most distal leaves  – stamens generally in 3 pairs of unequal length ..... STREPTANTHUS (2)

19' Most distal leaves  or lobed

20. Cauline leaves , basally lobed or clasping; petals yellow ..... BARBAREA (2)

20' Cauline leaves petioled, not basally lobed or clasping; petals white to purple ..... THELYPODIUM (3)

16' Seeds winged at least at tip

21. Stamens 4 long, 2 short; petals clawed

22. At least some cauline leaves  or  ..... BOECHERA

22' All cauline leaves pinnately lobed ..... PLANODES

21' Stamens in 3 pairs of unequal length; petals generally not clawed

23. Fruit strongly , tip , forming a beak ..... STREPTANTHELLA

23' Fruit generally  to  (reflexed),  throughout, beak 0.

24. Sepals 2.8–3.2 mm; stem 0.5–2 dm ..... SIBAROPSIS

24' Sepals 4–8 mm; stem (0.7)1–8 dm ..... STREPTANTHUS (2)

14' Fruit  or 4-angled

25. Cauline leaves pinnately compoundproximal  rooting ..... NASTURTIUM

25' Cauline leaves proximal  not rooting

26. Stalk above receptacle 6–28 mm ..... STANLEYA (2)

26' Stalk above receptacle 0–4(5) mm

27. Cauline leaves basally lobed, , or clasping

28. Cauline leaves  to pinnately lobed

29. Seeds in 2 rows ..... RORIPPA (2)

29' Seeds in 1 row

30. Biennial or  herbpetals not crinkled ..... BARBAREA (2)

30' Annualpetals generally crinkled ..... CAULANTHUS (3)

28' Cauline leaves  or wavy

31. Fruit 4-angled; petals yellow ..... CONRINGIA

31' Fruit petals white to purple ..... THELYPODIUM (3)

27' Cauline leaves not basally lobed, , or clasping

32. Stigma prominently 2-lobed

33. Fruit valves 1-veined; petals purple to white ..... CAULANTHUS (3)

33' Fruit valves distinctly 3-veined; petals yellow ..... SISYMBRIUM

32' Stigma 

34. Perennial herb, occasionally subshrub woody ..... HESPERIDANTHUS

34' Annual or biennial

35. Stalk above receptacle slender, 1–5 mm; inflorescence spike-like ..... THELYPODIUM (3)

35' Stalk above receptacle stout, 0–1 mm; inflorescence not spike-like

36. Seeds in 1 row; petals (2.5)4–17 mm ..... CAULANTHUS (3)

36' Seeds in 2 rows; petals 0.5–0.8 mm ..... RORIPPA (2)

 

Contact/Feedback

Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, http://ucjeps.berkeley.edu/eflora/ [accessed on ]

Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.