Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Annual to subshrubs, fleshy
Leaves generally simple, generally basal and cauline, alternate or opposite, generally reduced upward
Inflorescence: generally cyme, generally bracted
Flower: sepals generally 3–5, generally ± free; petals generally 3–5, ± free or fused; stamens = to >> sepals, free or epipetalous; pistils generally 3–5, simple (sometimes fused at base), ovary 1-chambered, placenta 1, parietal, ovules 1–many, style 1
Fruit: follicles generally 3–5
Seeds 1–many, small
Genera in family: ± 30 genera, ± 1500 species: ± worldwide, especially dry temp; many cultivated for ornamental. Family description and generic key by Melinda F. Denton and Reid Moran.


Melinda F. Denton

Generally per from rhizomes or stout, scaly caudex, generally glabrous
Leaves sessile, generally alternate, generally obovate to spoon-shaped
Inflorescence generally raceme- to panicle-like
Flower: sepals 4–5, free to fused below, < petals, obtuse to long-tapered; petals 4–5, free or fused below, erect to spreading; stamens 8 or 10, in 2 whorls, barely epipetalous; pistils 4–5, free or fused below,
Fruit erect or spreading
Seeds many, elliptic, often winged at both ends
Etymology: (Latin: to assuage, from healing properties of houseleek, to which Sedum was applied by some authors)
Reference: [Denton 1982 Brittonia 34:48–77]


S. laxum (Britton) A. Berger

Plant 7–40 cm, glabrous, sometimes glaucous; rosettes 1–6 cm diam, internodes between leaves < 3 mm
Leaves ± (ob)ovate; rosette leaves 9–50 mm, 1–5 mm thick, generally widest 3–8 mm below tip, rounded or barely notched; cauline leaves 5–20 mm
Inflorescence 2–11 cm, 12–80+-flowered, sometimes flat-topped
Flower: sepals generally 1/3–2/3 petals, generally acute; petals 7–13 mm, obovate, obtuse; anthers generally ± red-brown to purplish black
Fruit 6–12 mm, erect
Seed 1–2 mm
Ecology: Outcrops
Elevation: 50–2000 m.
Bioregional distribution: North Coast, n Outer North Coast Ranges, n High North Coast Ranges, Klamath Ranges
Distribution outside California: sw Oregon


subsp. laxum

Plant 7–40 cm
Leaves: rosette leaves 10–50 mm; cauline leaf length >> width, base obtuse, often slightly decurrent
Flower: petals generally white to light pink (light yellow)
Chromosomes: n=15
Ecology: On serpentine, sometimes on basalt
Elevation: 50–2000 m.
Bioregional distribution: North Coast, Klamath Ranges
Distribution outside California: sw Oregon
Synonyms: subspp. latifolium R.T. Clausen and perplexum R.T. Clausen
Horticultural information: DRN, SHD, IRR: 4, 5, 6, 7, 15, 16, 17.

previous taxon | next taxon
bioregional map for SEDUM%20laxum%20subsp.%20laxum being generated

Retrieve Jepson Interchange Index to Plant Names entry for Sedum laxum subsp. laxum
Retrieve dichotomous key for Sedum
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California