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| Jepson eFlora
Key to families | Table of families and genera This text currently parallels The Jepson Manual: Vascular Plants of California, Second Edition that is now available at the University of California Press. Text appearing in blue on this page will not appear in the printed book; it will be displayed only on the Web. Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link. |
Perennial ( annual, biennial, subshrub), generally from rhizomes or stout, scaly caudex, generally glabrous; rosettes 0 or open to dense.
Leaf: sessile, generally alternate, generally obovate to spoon-shaped.
Inflorescence: terminal, generally raceme- to panicle-like.
Flower: sepals, petals generally 5, free to fused at base, sepals < petals, obtuse to long- tapered; petals erect to spreading; stamens 8 or 10, in 2 whorls, epipetalous or not; pistils 4–5, free or fused below.
Fruit: free or fused at base, erect or spreading.
Seed: many, elliptic, often winged at both ends.
± 450 species: temps, tropical mountains, North America, Mex, C.Am, Eur, Asia, n&e Africa, Atlantic islands, Indian Ocean islands; cultivated as ornamental, green roofs. (Latin: to assuage, from healing properties of houseleek, to which Sedum was sometimes applied) Sedum roseum moved to Rhodiola.
Unabridged references: [Denton 1982 Brittonia 34:48–77]
1. Subshrub ..... S. praealtum
1' Annual to perennial herb
2. Sts densely glandular-hairy toward base ..... S. album
2' Sts glabrous, glaucous, or papillate, not glandular-hairy toward base
3. Lvs 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. Lvs 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; leaf tip long-tapered; fruit 5–8 mm, ± erect; stems often with plantlets in place of distal leaves, flowers ..... S. stenopetalum
5' Lvs 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' Lvs generally widest above middle, tapered to base; leaves > bracts
8. Infl 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' Infl 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. Infl 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' Infl 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, http://ucjeps.berkeley.edu/IJM.html [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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