OregonFlora: Sedum lanceolatum vs. Sedum

	Sedum lanceolatum	Sedum
	spearleaf stonecrop	stonecrop
Habit		Herbs or rarely subshrubs annual, biennial, or perennial, leaves deciduous or persistent, 2–10 dm, glabrous or hairy.
Stems		erect to creeping, usually much branched; horizontal stems well developed, green to reddish.
Leaves		alternate or opposite, sometimes forming dense rosettes, succulent, linear to orbicular or spatulate; terete to laminar, 0.1–8 cm, bases spurred or not; margins entire.
Inflorescences		terminal or axillary cymes, arising from tip of rosette.
Flowers		(4)5(6+)-parted; sepals distinct or basally connate; petals erect to spreading at anthesis; distinct or basally connate, yellow, white, pink, or red, often with red midribs or bases; stamens 2 × as many as sepals, rarely equal; pistils erect; distinct to basally fused.
Fruits		follicles; erect or spreading.

	Sedum lanceolatum	Sedum
Distribution	[WildflowerSearch map] [BONAP county map]	[BONAP county map]
Discussion		Africa, Asia, Central America, Europe, North America. ~450 species; 13 species treated in Flora. Sedum, as defined here, is a diverse group, and not all the members are close relatives. The species now placed in Sedella and Rhodiola have already been removed from Sedum, and the genus may be split further. Recent research using DNA markers indicates that Dudleya arose within Sedum, as it is currently defined. Therefore, either Dudleya will be transferred into Sedum or Sedum will be broken up. Use of the key may require fresh flowers from early in the flowering season or photographs or detailed descriptions of such flowers. “Stem leaves” are those of the flowering stems. Late in the season, stem leaves fall away. The last few flowers of the season of some taxa can be cleistogamous and are atypical in petal length and orientation. Anther color changes with age and may be hidden by yellow pollen.
Source		Flora of Oregon, volume 2, page 600 Barbara Wilson, Richard Brainerd, Nick Otting
Sibling taxa	S. acre, S. album, S. debile, S. divergens, S. laxum, S. leibergii, S. moranii, S. oblanceolatum, S. oreganum, S. oregonense, S. radiatum, S. spathulifolium, S. stenopetalum, S. thartii
Subordinate taxa	S. lanceolatum var. lanceolatum	S. acre, S. album, S. debile, S. divergens, S. lanceolatum, S. laxum, S. leibergii, S. moranii, S. oblanceolatum, S. oreganum, S. oregonense, S. radiatum, S. spathulifolium, S. stenopetalum, S. thartii
Synonyms	Sedum lanceolatum var. rupicola, Sedum rupicola
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Sedum

spearleaf stonecrop

stonecrop

Habit

Herbs or rarely subshrubs annual, biennial, or perennial, leaves deciduous or persistent, 2–10 dm, glabrous or hairy.

Stems

erect to creeping, usually much branched; horizontal stems well developed, green to reddish.

Leaves

alternate or opposite, sometimes forming dense rosettes, succulent, linear to orbicular or spatulate; terete to laminar, 0.1–8 cm, bases spurred or not;

margins entire.

Inflorescences

terminal or axillary cymes, arising from tip of rosette.

Flowers

(4)5(6+)-parted;

sepals distinct or basally connate;

petals erect to spreading at anthesis; distinct or basally connate, yellow, white, pink, or red, often with red midribs or bases;

stamens 2 × as many as sepals, rarely equal;

pistils erect; distinct to basally fused.

Fruits

follicles; erect or spreading.

Sedum

Distribution

[WildflowerSearch map]

[BONAP county map]

Discussion

Africa, Asia, Central America, Europe, North America. ~450 species; 13 species treated in Flora.

Sedum, as defined here, is a diverse group, and not all the members are close relatives. The species now placed in Sedella and Rhodiola have already been removed from Sedum, and the genus may be split further. Recent research using DNA markers indicates that Dudleya arose within Sedum, as it is currently defined. Therefore, either Dudleya will be transferred into Sedum or Sedum will be broken up. Use of the key may require fresh flowers from early in the flowering season or photographs or detailed descriptions of such flowers. “Stem leaves” are those of the flowering stems. Late in the season, stem leaves fall away. The last few flowers of the season of some taxa can be cleistogamous and are atypical in petal length and orientation. Anther color changes with age and may be hidden by yellow pollen.

Source

Flora of Oregon, volume 2, page 600
Barbara Wilson, Richard Brainerd, Nick Otting

Sibling taxa