Dudleya lanceolata |
Dudleya subg. Dudleya |
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lance-leaf dudleya, lanceleaf liveforever, Southern California dudleya |
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Caudices | simple or apically branched and cespitose, 1–5 × 1–3 cm, axillary branches absent. |
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Stems | above ground, caudices, branching or sometimes simple, short or elongate. |
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Leaves | rosettes 1–7, not in clumps, 10–25(–30)-leaved, 3–25 cm diam.; blade green, oblong-lanceolate, 4–30 × 0.5–4 cm, 1.5–6 mm thick, base 1–3 cm wide, apex acute to acuminate, surfaces not farinose, sometimes glaucous. |
usually persistent (withering in early summer in D. cymosa subsp. marcescens and D. parva); petiole absent; blade mostly laminar, sometimes subterete, turgid ± throughout. |
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Inflorescences | cyme mostly 2–3-branched, obpyramidal; branches not twisted (flowers on topside), simple or 1-times bifurcate, (5–16 cm diam.); cincinni 2–3, 2–20-flowered, circinate, 2–15(–25) cm; floral shoots 15–90(–120) × 0.3–1.2 cm; leaves 18–40, spreading to ascending, triangular-lanceolate to -ovate, 10–30(–50) × 3–18 mm, apex acute, in age straight and erect to spreading. |
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Pedicels | erect, not bent in fruit, 2–6(–12) mm. |
erect to pendent, 1-35 mm. |
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Flowers | calyx 4–7 × 5–8 mm; petals connate 1–2 mm, bright yellow or usually red or red-flushed or -marked abaxially, greenish to orange-yellow adaxially, 10–16 × 2.5–5 mm, apex acute, tips slightly outcurved; pistils connivent, erect. |
petals erect to, rarely, ascending (sometimes tips outcurved), corolla barely open, tubular or tightly 5-gonal (loosely tubular, not tightly 5-gonal in D. farinosa), free margin of each petal usually connivent to adjacent petals (usually not connivent in D. farinosa); pistils usually connivent and erect in flower (suberect and not connivent in D. stolonifera), nearly erect or slightly ascending, not gibbous in fruit. |
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Unripe | follicles erect. |
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Cymes | branches 2-3(-6), simple or bifurcate; cincinni circinate or not. |
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2n | = 68. |
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Dudleya lanceolata |
Dudleya subg. Dudleya |
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Phenology | Flowering spring. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Habitat | Rocky slopes | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Elevation | 0-1300 m (0-4300 ft) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Distribution |
CA; Mexico (Baja California)
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sw United States; nw Mexico |
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Discussion | Dudleya lanceolata is wide-ranging, from Monterey and western Kern counties southward through San Diego County, variable, and ill-defined. It varies locally in size of parts and in flower color but does not seem easily divisible into smaller units. N. L. Britton and J. N. Rose (1903, 1905) proposed seven additional species of southern California or of unstated origin that seem best included here. On the basis of 18 or more well-scattered collections, it is tetraploid; it seems best defined partly on that basis. Similar plants from Aliso Canyon, Orange County, are octoploid (C. H. Uhl and R. V. Moran 1953, as D. sp. aff. D. lanceolata); this is one of several scattered coastal populations with the caudex elongate. Another is D. elongata Rose, from near San Pedro, of which later collections are tetraploid. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Species ca. 40 (15 in the flora). G. A. Levin and T. W. Mulroy (1985) studied floral morphology, nectar production, and breeding systems in 21 taxa of subg. Dudleya from throughout the north–south range. A few are pollinated primarily by hummingbirds, although also having high self-fertility, and several primarily by bees and long-tongued flies; all those studied were self-compatible. Levin and Mulroy concluded that the breeding system of Dudleya favors outcrossing but allows self-fertilization. Subgenus Dudleya is notable in that the epipetalous filaments are usually shorter than antisepalous ones and adnate higher. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 186. | FNA vol. 8, p. 177. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Parent taxa | Crassulaceae > Dudleya > subg. Dudleya | Crassulaceae > Dudleya | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Synonyms | Echeveria lanceolata, D. brauntonii, D. cymosa subsp. minor, D. lurida, D. nevadensis subsp. minor | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Name authority | (Nuttall) Britton & Rose: New N. Amer. Crassul., 23. 1903 , | unknown | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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