FNA: Dudleya attenuata vs. Dudleya candelabrum

	Dudleya attenuata	Dudleya candelabrum
	Orcutt's dudleya, tapertip liveforever	candleholder dudleya, candleholder live forever
Caudices		simple, 0.1–20 × 2–8 cm, axillary branches absent.
Leaves		rosettes solitary, not in clumps, 20–45-leaved, 10–30 cm diam.; blade green or, rarely, pale greenish white, obovate to oblong-oblanceolate, 6–17 × 3–7 cm, 1–4 mm thick, base 0.2–0.5 cm wide, apex acuminate, surfaces usually not farinose, not glaucous.
Inflorescences		cyme 3–5-branched, densely rounded or becoming flat-topped; branches not twisted (flowers on topside), 1–2 times bifurcate, (5–25 cm diam.); cincinni ca. 3, 5–25-flowered, circinate, 2.5–13 cm; floral shoots 15–35 × 0.6–1 cm; leaves 20–35, spreading or deflexed, triangular-lanceolate, 30–70 × 10–20 mm, apex acute.
Pedicels		erect, not bent in fruit, 2–6 mm.
Flowers		calyx 6–9 × 4–5 mm; petals connate 1.5–3.5 mm, pale yellow to white, 8–12 × 2.5–3.5 mm, apex acute, tips straight; pistils connivent, erect.
California
Unripe		follicles erect.
2n		= 34.

	Dudleya attenuata	Dudleya candelabrum
Phenology		Flowering late spring–early summer.
Habitat		Scattered in rocky places, especially north- and east-facing canyon walls
Elevation		0-600 m (0-2000 ft)
Distribution	CA; nw Mexico [WildflowerSearch map] [BONAP county map]	CA [BONAP county map]
Discussion	Subspecies 2 (1 in the flora). Subspecies australis Moran occurs in Baja California. (Discussion copyrighted by Flora of North America; reprinted with permission.)	Of conservation concern. Dudleya candelabrum is endemic to Santa Cruz and Santa Rosa islands; it is considered fairly threatened (California Native Plant Society, http://cnps.web.aplus.net/cgi-bin/inv/inventory.cgi). Among diploids, it seems most similar to the green phase of D. brittonii D. A. Johansen, of coastal northwestern Baja California, which also has a thick, unbranched caudex and large rosettes, and has somewhat similar leaf shape, inflorescence, and flowers. However, D. brittonii has more rosette leaves, which may be farinose or not, longer pedicels that are thickened distally, and conspicuously narrower sepals, with broad U-shaped sinuses. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 8, p. 176.	FNA vol. 8, p. 188.
Parent taxa	Crassulaceae > Dudleya > subg. Stylophyllum	Crassulaceae > Dudleya > subg. Dudleya
Sibling taxa	D. abramsii, D. arizonica, D. blochmaniae, D. brevifolia, D. candelabrum, D. cespitosa, D. cymosa, D. densiflora, D. edulis, D. farinosa, D. gnoma, D. greenei, D. lanceolata, D. multicaulis, D. nesiotica, D. palmeri, D. parva, D. pulverulenta, D. saxosa, D. stolonifera, D. traskiae, D. variegata, D. verityi, D. virens, D. viscida	D. abramsii, D. arizonica, D. attenuata, D. blochmaniae, D. brevifolia, D. cespitosa, D. cymosa, D. densiflora, D. edulis, D. farinosa, D. gnoma, D. greenei, D. lanceolata, D. multicaulis, D. nesiotica, D. palmeri, D. parva, D. pulverulenta, D. saxosa, D. stolonifera, D. traskiae, D. variegata, D. verityi, D. virens, D. viscida
Subordinate taxa	D. attenuata subsp. attenuata
Synonyms	Cotyledon attenuata, Stylophyllum attenuatum
Name authority	(S. Watson) Moran: Desert Pl. Life 14: 191. (1943)	Rose: in N. L. Britton and J. N. Rose, New N. Amer. Crassul., 17. 1903 ,
Web links	Local Web sites: CalFlora, CalPhotos 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 Local Web sites: CalFlora, CalPhotos WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Dudleya candelabrum

Orcutt's dudleya, tapertip liveforever

candleholder dudleya, candleholder live forever

Caudices

simple, 0.1–20 × 2–8 cm, axillary branches absent.

Leaves

rosettes solitary, not in clumps, 20–45-leaved, 10–30 cm diam.;

blade green or, rarely, pale greenish white, obovate to oblong-oblanceolate, 6–17 × 3–7 cm, 1–4 mm thick, base 0.2–0.5 cm wide, apex acuminate, surfaces usually not farinose, not glaucous.

Inflorescences

cyme 3–5-branched, densely rounded or becoming flat-topped;

branches not twisted (flowers on topside), 1–2 times bifurcate, (5–25 cm diam.);

cincinni ca. 3, 5–25-flowered, circinate, 2.5–13 cm;

floral shoots 15–35 × 0.6–1 cm;

leaves 20–35, spreading or deflexed, triangular-lanceolate, 30–70 × 10–20 mm, apex acute.

Pedicels

erect, not bent in fruit, 2–6 mm.

Flowers

calyx 6–9 × 4–5 mm;

petals connate 1.5–3.5 mm, pale yellow to white, 8–12 × 2.5–3.5 mm, apex acute, tips straight;

pistils connivent, erect.

California

Unripe

follicles erect.

= 34.

Dudleya candelabrum

Phenology

Flowering late spring–early summer.

Habitat

Scattered in rocky places, especially north- and east-facing canyon walls

Elevation

0-600 m (0-2000 ft)

Distribution

CA; nw Mexico

[WildflowerSearch map]

[BONAP county map]

Discussion

Subspecies 2 (1 in the flora).

Subspecies australis Moran occurs in Baja California.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

Dudleya candelabrum is endemic to Santa Cruz and Santa Rosa islands; it is considered fairly threatened (California Native Plant Society, http://cnps.web.aplus.net/cgi-bin/inv/inventory.cgi). Among diploids, it seems most similar to the green phase of D. brittonii D. A. Johansen, of coastal northwestern Baja California, which also has a thick, unbranched caudex and large rosettes, and has somewhat similar leaf shape, inflorescence, and flowers. However, D. brittonii has more rosette leaves, which may be farinose or not, longer pedicels that are thickened distally, and conspicuously narrower sepals, with broad U-shaped sinuses.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source

FNA vol. 8, p. 176.

FNA vol. 8, p. 188.

Parent taxa

Crassulaceae > Dudleya > subg. Stylophyllum

Crassulaceae > Dudleya > subg. Dudleya

Sibling taxa

D. abramsii, D. arizonica, D. blochmaniae, D. brevifolia, D. candelabrum, D. cespitosa, D. cymosa, D. densiflora, D. edulis, D. farinosa, D. gnoma, D. greenei, D. lanceolata, D. multicaulis, D. nesiotica, D. palmeri, D. parva, D. pulverulenta, D. saxosa, D. stolonifera, D. traskiae, D. variegata, D. verityi, D. virens, D. viscida

D. abramsii, D. arizonica, D. attenuata, D. blochmaniae, D. brevifolia, D. cespitosa, D. cymosa, D. densiflora, D. edulis, D. farinosa, D. gnoma, D. greenei, D. lanceolata, D. multicaulis, D. nesiotica, D. palmeri, D. parva, D. pulverulenta, D. saxosa, D. stolonifera, D. traskiae, D. variegata, D. verityi, D. virens, D. viscida

Subordinate taxa

D. attenuata subsp. attenuata

Synonyms

Cotyledon attenuata, Stylophyllum attenuatum

Name authority

(S. Watson) Moran: Desert Pl. Life 14: 191. (1943)

Rose: in N. L. Britton and J. N. Rose, New N. Amer. Crassul., 17. 1903 ,

Web links

Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).

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Dudleya attenuata

Dudleya candelabrum

Dudleya attenuata

Dudleya candelabrum