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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
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.Key to Dudleya
± 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.
Rosettes 4–60, 4–25 cm wide. Stem: 1–3 cm wide, often elongate, not swollen at base, older parts generally not visible between dried leaves. Leaf: evergreen, 2.5–6 cm, 1–2.5 cm wide, 5–9 mm thick, oblong-ovate, glaucous or not, base 1–2.5 cm wide, tip generally obtuse, margin with >= 2 angles between ad-, abaxial surfaces. Inflorescence: peduncle 10–35 cm, 3–8 mm wide; 1° branches 3–5, close-set, branched 0–2 ×; terminal branches 1–3.5 cm, ascending in age, 3–11-flowered; pedicels 1–3 mm. Flower: sepals 3–7 mm, deltate-ovate; petals 10–14 mm, 3–5 mm wide, fused 1–2 mm, oblanceolate, acute to obtuse, pale yellow, upper margins of adjacent petals not touching.
2n=34. Common: Coastal soils and cliffs; generally < 100 m (< 600 m in San Mateo Co.). North Coast, n&c Central Coast; southwestern Oregon. Hybrids with Dudleya caespitosa, Dudleya cymosa subsp. cymosa suspected. Jun–Aug [Online Interchange]
Previous taxon: Dudleya edulis
Next taxon: Dudleya gnoma
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 16 2014
Citation for this treatment: [Author of taxon treatment] 2012. Dudleya, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=23655, accessed on Apr 16 2014
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