Jepson eFlora
Key to families | Table of families and genera

Key to Sedum

View taxon page for Sedum

1. Subshrub ..... S. praealtum

1' Annual to perennial herb

2. Stems densely glandular-hairy toward base ..... S. album

2' Stems glabrous, glaucous, or papillate, not glandular-hairy toward base

3. Leaves generally widest ± below middle, tapered to tip (except Sedum niveum); leaves ± = bracts (except Sedum lanceolatum)

4. Petals white, pink-streaked, fused > 1 mm; flowers 1–9; fruit erect ..... S. niveum

4' Petals yellow or white, ± free; flowers 1–44; fruit erect to spreading

5. Leaves red-scarious in age

6. Annual, biennial; leaf tip obtuse to acute; fruit 3–5 mm, spreading to strong-reflexed; stems without plantlets in place of distal leaves, flowers ..... S. radiatum

6' Perennial herb; leaf tip long-tapered; fruit 5–8 mm, ± erect; stems often with plantlets in place of distal leaves, flowers ..... S. stenopetalum

5' Leaves staying green, fleshy

7. Bracts ± elliptic to round, surfaces convex; fruit spreading ..... S. divergens

7' Bracts lanceolate, surfaces ± flat; fruit ± erect, tips outcurved ..... S. lanceolatum

3' Leaves generally widest above middle, tapered to base; leaves > bracts

8. Inflorescence generally ± 3-branched; petals long-acuminate and fruits erect, or petals acute and fruits generally outcurved

9. Petals long-acuminate, 8–13 mm, fused < 3 mm; fruit erect; outer rosette leaves = inner ..... S. oreganum

9' Petals acute, (5)7–8(10) mm, ± free; fruit generally outcurved; outer rosette leaves >> inner ..... S. spathulifolium

8' Inflorescence generally > 3-branched; petals obtuse to acute and fruits erect

10. Rosette open, internodes visible, some 3–5 mm

11. Petals rounded to obtuse; anthers yellow (red-brown); inflorescence 2–8 cm, 13–40(72)-flowered ..... S. obtusatum subsp. retusum

11' Petals acute; anthers yellow or red-brown; inflorescence 1–14 cm, (12)20–70(120)-flowered ..... S. oregonense

10' Rosette dense, internodes not visible, < 3 mm

12. Inflorescence strongly white-glaucous; rosette leaves 11–60 mm, generally > 3.5 × longer than wide; anthers generally yellow (turning red-brown)

13. Bracts 14–30 mm; rosettes 3–9 cm diam, leaves 14–60 mm, 7–16 mm wide, widest 6–9 mm below tip; petals ± pale yellow; fruit free ..... S. albomarginatum

13' Bracts 7–13 mm; rosettes 1–6 cm diam, leaves 11–35 mm, 3–9 mm wide, widest 2–3 mm below tip; petals ± cream; fruit fused at base ..... S. oblanceolatum

12' Inflorescence not or ± glaucous; rosette leaves 6–50 mm, generally < 3 × longer than wide (or anthers red-purple); anthers yellow to purple-black

14. Petals dark pink to dark red; bract surfaces convex, base cordate, not clasping ..... S. laxum subsp. eastwoodiae

14' Petals white to yellow or pink; bract surfaces flat, base obtuse to truncate, not clasping, or cordate, clasping

15. Petals white to pink, or pale yellow ..... S. laxum

16. Bract length >> width; plant 7–40 cm; rosette leaves 10–50 mm ..... subsp. laxum

16' Bract length < to > width; plant 9–24 cm; rosette leaves 9–32 mm

17. Petals pale yellow; bract base often truncate, not clasping; sepals < 1/3 petals ..... subsp. flavidum

17' Petals white to pink; bract base cordate, clasping; sepals 1/3–2/3 petals ..... subsp. heckneri

15' Petals cream or deep yellow, pink-tinged or not, red-veined or not (pale yellow or pink-white in Sedum obtusatum subsp. boreale) ..... S. obtusatum

18. Petals cream, not ± pink- or red-tinged or -veined; sepals 3.5–6 mm, acute to long-tapered ..... subsp. paradisum

18' Petals yellow, pale yellow, or white, ± pink- or red-tinged or -veined at least in age; sepals 1.8–5 mm, obtuse to acute

19. Bracts 8–15 mm; petals pale yellow or white, generally pink-tinged or -veined; inflorescence 15–38(60)-flowered ..... subsp. boreale

19' Bracts generally 4–9(13) mm; petals yellow, ± red-tinged or -veined in age; inflorescence 8–26(46)-flowered ..... subsp. obtusatum


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