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Steve Boyd, except as noted

Annual to shrub [(± tree-like or climbing)], fleshy. Leaf: generally simple, alternate or opposite, in dense to open, basal (or terminal) rosettes or basal and cauline, not in rosettes, reduced distally or not, margin often ± red. Inflorescence: generally cyme, generally bracted. Flower: generally bisexual; sepals generally 3–5, generally ± free; petals generally 3–5, ± free or fused; stamens >> to = sepals, epipetalous or not; pistils generally 3–5, simple, fused at base or not, ovary 1-chambered, placenta 1, parietal, ovules 1–many, style 1. Fruit: follicles, generally 3–5. Seed: 1–many, small.
± 33 genera, ± 1400 species: ± worldwide, especially dry temperate; many cultivated for ornamental. [Eggli (ed.) 2003 Illus Handbook Succulent Plants 6 (Crassulaceae). Springer] Water-stressed plants often ± brown or ± red. Consistent terminology regarding leaves, bracts difficult; in taxa with rosettes (e.g., Aeonium, Dudleya, some Sedum), structures in rosettes are leaves, those on peduncles are bracts, and those subtending flowers are flower bracts; in taxa where inflorescence is terminal, rosette leaves may "become" bracts as stem rapidly elongates to form inflorescence. Seed numbers given per follicle. —Scientific Editor: Thomas J. Rosatti.

Key to Crassulaceae


Stephen Ward McCabe

Perennial herb, fleshy, glabrous, bisexual. Stem: generally caudex- or corm-like, branched or not, ± covered with dried leaves. Leaf: in rosettes, evergreen or ± deciduous in summer (withering, falling or not), waxy or not, base wounding purple-red (yellow) or generally not. Inflorescence: cyme; flower bracts ± subtending pedicels, < bracts; bracts alternate. Flower: sepals 5, fused below; petals 5, fused at base, erect to spreading above; stamens 10, epipetalous; carpels 5, ± fused below. Fruit: follicles 5, erect to spreading, many-seeded. Seed: < 1 mm, narrowly ovoid, brown, striate.
± 46 species: southwestern North America; some used as groundcover or cultivated for ornamental. (W.R. Dudley, 1st head of Botany Department, Stanford University, 1849–1911) [Thiede 2003 in Eggli (ed.) Illus Handbook Succulent Plants 6 (Crassulaceae):85–103. Springer] Fruit just before opening generally most reliable for orientation; insect damage may cause branching in taxa characterized as non-branching.
Unabridged note: Whether or not leaves of Dudleya cymosa subsp. costatifolia, Dudleya saxosa subsp. saxosa, Dudleya variegata wound purple-red, red, yellow, or some other color at base when removed is evidently unknown.

Key to Dudleya

D. abramsii Rose
Cespitose or not; rosettes 1–many, 0.5–15 cm wide. Leaf: generally dry but ± not deciduous in summer, 2–30 mm, 3–20 mm wide, lance-oblong or lanceolate (elliptic to oblanceolate), generally glaucous, adaxially generally ± flat. Inflorescence: peduncle 2–25 cm, 1–6 mm wide; lower bracts 4–40 mm; pedicels 0.5–7(11) mm. Flower: sepals 2–5 mm, deltate; petals 8–13 mm, 1.5–3.5 mm wide, fused 1–4.5 mm, elliptic, acute, pale- or cream-yellow, margin often jagged, keel generally with fine, purple to red lines.
2n=34. [Online Interchange]

D. abramsii subsp. bettinae (Hoover) Bartel BETTY'S DUDLEYA
Rosettes 5–40, 0.5–8 cm wide. Stem: 3–20 mm wide. Leaf: ± deciduous in summer, 2–7 cm, 2–7 mm wide, ± round in ×-section, ± glaucous, base wounding purple-red, tip acute. Inflorescence: peduncle 3–15 cm, 2–5 mm wide; lower bracts 10–20 mm; 1° branches 0 or generally 2(3), ascending, generally simple, 2–15-flowered. Flower: petals fused 1–2 mm, often purple-tinged near tip, with few purple flecks.
Rocky outcrops in serpentine grassland; 50–180 m. s Central Coast, s Outer South Coast Ranges (San Luis Obispo Co.). [Dudleya bettinae Hoover] Hybrids with Dudleya abramsii subsp. murina likely. May–Jun [Online Interchange] {CNPS list}
Unabridged note: Possibly of hybrid origin, with Dudleya abramsii subsp. murina and Dudleya blochmaniae subsp. blochmaniae as parental species

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora,, accessed on Nov 29 2015
Citation for this treatment: [Author of taxon treatment] 2013. Dudleya, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on Nov 29 2015

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click for enlargement Dudleya abramsii subsp. bettinae
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© 2001 CDFA

Geographic subdivisions indicated for the distribution of Dudleya abramsii subsp. bettinae Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.