| |
|
Key to SedumView taxon page for Sedum
(For a list of species in Sedum, use the above link.) Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots. 1' Annual to perennial  Completing life cycle (germination through death) in more than two years or growing seasons, generally non-woody (at least above ground) to woody; includes perennial herbs as well as subshrubs to trees; the abbreviation 'per' only refers to perennial herb, not to the word 'perennial' alone. herb 2' Stems glabrous, glaucous, or papillate  Pertaining to a surface (e.g., of a leaf, stigma, fruit) bearing small, rounded or conic protuberances (papillae). , not glandular-hairy toward base 3. Leaves generally widest ± below middle, tapered  Gradually (not abruptly) narrower or smaller at base or tip. to tip (except Sedum niveum); leaves ± = bracts (except Sedum lanceolatum) 4. Petals white, pink-streaked, fused > 1 mm; flowers 1–9; fruit erect  Upright; vertically oriented. ..... S. niveum 4' Petals yellow or white, ± free; flowers 1–44; fruit erect to spreading  Oriented more or less perpendicularly to the axis of attachment; often, more or less horizontal. 5. Leaves red-scarious in age 6. Annual, biennial; leaf  Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets). tip obtuse  Having a short-tapered, blunt tip or base, the sides convex or straight and converging at more than a right angle. to acute  Having a short-tapered, sharp tip, the sides convex or straight and converging at less than a right angle. ; 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  In the shape of a flattened circle or ellipse; wider than linear to round, surfaces convex; fruit spreading ..... S. divergens 7' Bracts lanceolate  Narrowly elongate, widest in the basal half, often tapered to an acute tip. , 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  A radiating cluster of leaves generally at or near ground level. leaves = inner ..... S. oreganum 8' Inflorescence generally > 3-branched; petals obtuse to acute and fruits erect 10. Rosette open, internodes  Segment of an axis (generally a stem) between successive positions (nodes) from which one or more structures (especially leaves, buds, branches, or flowers) arise. visible, some 3–5 mm 11' Petals acute to acuminate  Having a long-tapered, sharp tip, the sides concave. ; anthers yellow or red-brown; inflorescence 1–14 cm, 10–95(120)-flowered 12. Petals spreading, acuminate, deep yellow; anthers yellow when fresh; inflorescence ± flat-topped ..... S. citrinum 12' Petals ascending  Curving or angling upward from base, or about 30-60 degrees less than vertical or away from axis of attachment. to spreading-ascending, acute, pale yellow; anthers yellow or red-brown when fresh; inflorescence ± cylindrical ..... S. oregonense 10' Rosette dense, internodes not visible, < 3 mm 13. Inflorescence strongly white-glaucous; rosette leaves 11–60 mm, generally > 3.5 × longer than wide; anthers generally yellow (turning red-brown) 14. Bracts 14–30 mm; rosettes A radiating cluster of leaves generally at or near ground level. 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 14' 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 13' Inflorescence not or ± glaucous; rosette leaves 6–50 mm, generally < 3 × longer than wide (or anthers red-purple); anthers yellow to purple-black 15. Petals dark pink to dark red; bract  Reduced, leaf- or scale-like structure subtending a branch, cone scale, peduncle, pedicel, or flower. surfaces convex, base cordate  Heart-shaped; often pertaining to a leaf in which the blade base on both sides of the petiole is rounded and convex. , not clasping ..... S. laxum subsp. eastwoodiae 15' Petals white to yellow or pink; bract surfaces flat, base obtuse to truncate  Abruptly (not gradually) narrower or smaller at base or tip, as if cut straight across or nearly so. , not clasping, or cordate, clasping 17' Bract length < to > width; plant 9–24 cm; rosette leaves 9–32 mm 16' 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 19' Petals yellow, pale yellow, or white, ± pink- or red-tinged or -veined at least in age; sepals 1.8–5 mm, obtuse to acute 20. Bracts 8–15 mm; petals pale yellow or white, generally pink-tinged or -veined; inflorescence 15–38(60)-flowered ..... subsp. boreale 20' Bracts generally 4–9(13) mm; petals yellow, ± red-tinged or -veined in age; inflorescence 8–26(46)-flowered ..... subsp. obtusatum
Contact/Feedback
Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, https://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.
|
|
|
