Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera

Key to Erythranthe

View taxon page for Erythranthe

(For a list of species in Erythranthe, use the above link.)

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

1. Corolla light pink to purplish or orange to red – tube-throat > 2 cm;  herb

2. Corolla orange to red; anthersstigma  ..... E. cardinalis

2' Corolla light pink to rose or purplish; anthers, stigma 

3. Corolla light pink ..... E. erubescens

3' Corolla magenta-rose to rose-purple or pink-purple ..... E. lewisii

1' Corolla color various, including yellow; generally annual, if perennial herb, corolla yellow

4. Calyx uppermost  longest, lowest 2 generally upcurved; corolla yellow, lower lip base generally swollen, ± closing mouth (except sometimes in E. arvensis)

5. Bracts subtending flowers a ± round disk, completely encircling stemglaucous ..... E. glaucescens

5' Bracts or leaves subtending flowers not a round disk, petioled or only base encircling stem, not glaucous

6. At least some leaves ± pinnately and narrowly lobed or dissected

7. Leaves pinnately to strongly 2-pinnately lobed or dissected with >= 8 primary  on each side ..... E. filicifolia

7' Leaves laciniate to 2-pinnately lobed or dissected, with < 7 primary lobes on each side and often with < 3 ..... E. laciniata

6' Leaves not pinnately lobed or dissected, but base occasionally irregularly dissected or lobed

8. Bracts or leaves subtending flowers  to narrowly  or elliptic-lanceolate, not fused at base around stem

9. Cauline  blades 5–25(30+) mm, plants glabrous to minutely glandular-puberulent, fruiting calyces 6–15 mm ..... E. nudata

9' Cauline leaf blades 4–10 mm; plants glabrous; fruiting calyces 4–6 mm ..... E. percaulis

8' Bracts or leaves subtending flowers ovate to  or round, occasionally fused at base around stem

10. Plants rhizomatous or stoloniferous

11. Rhizomes broader than filiform, generally 1–few, not highly branched and forming a mass

12. Stems (25)50–120(160+) cm, plant densely glandular-puberulent to coarse-hairy distally, corolla tube exserted 10–15 mm beyond calyx ..... E. grandis

12' Stems (6)15–65(80+) cm, plant glabrous to hairy distally, corolla tube exserted 3–5 mm beyond calyx ..... E. guttata

11' Rhizomes filiform, generally branching, forming a mass

13. Flowers 6–16, corolla tube-throat 10–15 mm ..... E. utahensis

13' Flowers 1–3(6+), corolla tube-throat 13–28 mm

14. Leaves ovate to broadly ovate, ± hairy ..... E. corallina

14' Leaves ovate to , glabrous to sparsely glandular ..... E. tilingii

10' Annuals, plants fibrous-rooted

15. Corolla exserted 4–8 mm from calyx tube, or if exserted < 4 mm then flowers only in axils of distal leaves, not at proximal 

16. Stems moderately to densely glandular

17. Corolla tube-throat 11–20 mm; leaf blades 5–17 mm;  9–17 mm; SCoR ..... E. arenicola

17' Corolla tube-throat 10–12 mm; leaf blades 15–30 mm; pedicels 15–45 mm; c SNF ..... E. marmorata

16' Stems glabrous to sparsely hairy ..... E. microphylla

15' Corolla exserted 0–3 mm from calyx tube, flowers in a bracted  or in axils of distal and proximal leaves

18. Stems glabrous ..... E. arvensis

18' . Stems sparsely glandular, ± glandular-puberulent, or glandular-hairy above nodes

19. Inflorescence with (5)10–16 flowers per stem in a bracted raceme ..... E. cordata

19' Inflorescence with 1–12(20) flowers per stem from distal to proximal nodes

20. Plants ± glabrous, glandular-hairy just above the nodes, sometimes hairy distally; calyx 10–15(19) mm ..... E. nasuta

20' Plants glandular-puberulent; calyx 8–11 mm ..... E. pardalis

4' Calyx lobes generally ± equal or lowest 2 longest, not upcurved; corolla yellow or not, lower lip base not swollen, not closing mouth

21. Perennial herb; stolons or rhizomes present

22. Calyx glabrous; stems with   so leaves appear as a   or near-basal

23. Leaves linear to oblanceolate, ± , forming tufted plants ..... E. linearifolia

23' Leaves  to obovate, generally ±  in ± distinct  and mat-forming ..... E. primuloides

22' Calyx ± glabrous to hairy; stems with evident internodes, leaves distinctly separated and cauline or basal and cauline

24. Herbage non-glandular; corolla tube , generally > 4 mm wide ..... E. dentata

24' Herbage glandular; corolla tube ±  to narrowly campanulate, 2–4 mm wide except wider at mouth

25. Plants ± spreading to erect, corolla tube-throat 11–18 mm, anthers glabrous to subglabrous ..... E. moschata

25' Plants lax and diffuse, corolla tube-throat 15–18 mm, anthers finely pubescent ..... E. ptilota

21' Annual; stolons and rhizomes 0

26. Calyx tube ± hairy

27. Leaf palmately veined; calyx 8–10(13 in fruit) mm; corolla ± pink to white ..... E. parishii

27' Leaf ± pinnately veined; calyx 3–8(9) mm; corolla yellow

28. Corolla lobe base each with 1 large, red-purple dot, lower lip occasionally with white patches in sinuses; calyx lobes rounded;  in fruit growing away from light ..... E. norrisii

28' Corolla lobe bases without large blotches and white patches on lower lip; calyx lobes ± ; pedicel in fruit not growing away from light

29. Corolla tube-throat 5–12 mm, limb 3–4 mm wide ..... E. floribunda

29' Corolla tube-throat 9–14 mm, limb 4–18 mm wide

30. Cauline leaves  to subsessile, blades  to lance-elliptic, generally rounded to attenuate at base ..... E. arenaria

30' Cauline leaves distinctly petiolate, blades ± ovate to triangular, rounded to cordate at base ..... E. geniculata

26' Calyx tube glabrous to 

31. Calyx very swollen in fruit, membranous; corolla lavender, rose to ± white, or yellow

32. Distal leaves petioled; corolla generally yellow

33. Corolla tube-throat 3–6.5 mm ..... E. breviflora

33' Corolla tube-throat 7–13 mm

34. Corolla lobes yellow,  0 or 1–2 mm ..... E. pulsiferae

34' Corolla lobes pale yellow, light purplish or white, with distinct pink borders; petioles 4–8 mm ..... E. trinitiensis

32' Distal leaves sessile; corolla lavender, pink to ± white, or yellow

35. Basal leaves not in rosette; corolla yellow ..... E. inflatula

35' Basal leaves in rosette; corolla pink to lavender or white (± yellow)

36. Corolla lobes  or very shallowly notched; vernally wet depressions ..... E. latidens

36' Corolla lobes distinctly notched; drained upland areas

37. Corolla tube-throat 8–12 mm, limbs expanded 7–12 mm wide (pressed) ..... E. acutidens

37' Corolla tube-throat 5–9 mm, limbs expanded 5–6 mm (pressed) ..... E. inconspicua

31' Calyx ± enlarged in fruit, ± corky or membranous; corolla maroon, purple, pink, lavender, yellow, or partly white

38. Lower calyx lobes > upper ..... E. alsinoides

38' Lower calyx lobes ± = upper

39. Calyx appearing waxy-white, from non-glandular minute papillae ..... E. taylorii

39' Calyx glabrous to puberulent not appearing waxy-white and without non-glandular minute papillae

40. Fruit exerted from calyx, calyx 2–3.5 mm ..... E. exigua

40' Fruit included in calyx, calyx 2–12 mm

41. Fruiting calyx strongly angled, becoming corky, calyx teeth spreading

42. Corolla yellow with white upper lip (bicolored) or completely yellow with yellow upper lip ..... E. bicolor

42' Corollas pink to purple

43. Corolla tube 3–7 mm, corolla persistent in fruit ..... E. breweri

43' Corolla tube 8–12 mm, corolla deciduous in fruit ..... E. filicaulis

41' Fruiting calyx not strongly angled, membranous not corky, calyx teeth erect to spreading

44. Corolla bicolored, upper lip maroon, lower lip yellow

45. Upper corolla lip with two maroon lobes, lower lip with three yellow lobes; leaves linear to oblanceolate, margins not rolled under, leaf bases  ..... E. barbata (2)

45' Upper corolla lip with four maroon lobes, lower lip yellow, 2-lobed; leaves lanceolate to ovate, margins rolled under, leaf bases clasping ..... E. shevockii

44' Corolla yellow, white, pink, or purple, not bicolored, upper and lower lip ± the same color

46. Calyx lobe margins 

47. Upper two corolla lobes much reduced, < lower three lobes, flowers rose to pink ..... E. gracilipes

47' Upper and lower corolla lobes ± equal, flowers deep pink to purple, white or yellow.

48. Fruiting calyces becoming red, minutely glandular, lobe mid-veins prominent

49. Leaves lanceolate to ovate, 2–10 mm wide ..... E. calcicola

49' Leaves linear to elliptic, 1–5 mm wide ..... E. rubella

48' Fruiting calyces becoming straw colored, sometimes red spotted, minutely puberulent or glabrous, lobe mid-veins weak

50' Corolla pink to magenta or purple

51. Leaves entire, never toothed; corolla limb deep pink to purple; stamens yellow; SnGb, SnBr ..... E. palmeri

51' Leaves entire or sometimes toothed; corolla limb pale pink to pink; stamens white; SN ..... E. sierrae

46' Calyx lobe margins glabrous

52. Corolla yellow

53. Internodes short, sometimes not evident, 1–25 mm, plants generally densely compact

54. Corolla tube-throat (5)7–11 mm, tube distinct, throat abruptly expanding, lower limb bearded, red-spotted ..... E. carsonensis

54' Corolla tube-throat 4–6 mm, tube indistinct from throat, lower limb glabrous, sometimes with red markings ..... E. suksdorfii

53' Internodes elongate, distinct, 5–40 mm, plants not densely compact

55. Corolla tube distinct, cylindric, expanding abruptly to limb, lower limb bearded ..... E. barbata (2)

55' Corolla tube-throat funnelform, expanding gradually to limb, lower limb sparsely bearded to glabrous ..... E. discolor

52' Corolla pink or purple

56. Leaf bases clasping

57. Corolla weakly zygomorphic, tube-throat 3–8 mm, limb 3–7 mm wide ..... E. androsacea

57' Corolla strongly zygomorphic, tube-throat 5–17 mm, limb 7–11 mm wide

58. Upper lip of corolla darker than lower lip, both upper lobes nearly entire ..... E. purpurea

58' Upper and lower lips of corolla the same color, all corolla lobes notched ..... E. hardhamiae

56' Leaf bases attenuate

59. Corolla pale pink to rose-colored with a broad yellow throat, corolla width (pressed) 16–25 mm ..... E. rhodopetra

59' Corolla deep pink to purple with two yellow ridges on the lower limb, corolla width (pressed) 6–15 mm

60. Pedicels  to spreading, often spreading horizontally with age ..... E. diffusa

60' Pedicels erect to ascending, not spreading horizontally with age ..... E. discolor



Citation for the whole project: Jepson Flora Project (eds.) . Jepson 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.