Dudleya blochmaniae |
Dudleya gnoma |
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Blochman's dudleya, Blochman's liveforever |
munchkin dudleya, munchkin liveforever |
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Caudices | branching apically, (cespitose), 0.5–2.6 × (0.1–)1.2–2 cm, axillary branches absent. |
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Leaves | 3–50; petiole 0.3–1.5 mm wide, to 1/3 as wide as blade; blade green, oblanceolate or clavate-oblanceolate, 1–6 cm × 2–8 mm, 1–4 mm thick, base 1–4 mm wide, apex subacute to rounded, surfaces sometimes ± glaucous. |
rosettes 1–60, in clumps, 8–20-leaved, 0.8–5.1 cm diam.; blade green, becoming reddish, triangular-ovate, (0.6–)0.9–2 × 0.5–1.3 cm, 2–4 mm thick, base 0.7–1.5 cm wide, apex acute, surfaces farinose, heavily glaucous. |
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Inflorescences | cincinni 3–10-flowered, 1–6 cm; floral shoots 3–12 cm × 0.5–2 mm; leaves 8–25, ascending, blade triangular-ovate to -lanceolate, 0.5–2.5 cm × 3–10 mm, 2–4 mm thick, apex rounded to subacute or obtuse. |
cyme 2-branched, broadly obpyramidal or flat-topped; branches not twisted (flowers on topside), simple or 1 times bifurcate, (0.3–0.6 cm diam.); cincinni 2–6, 3–7-flowered, circinate, 1–3 cm; floral shoots 2.5–13 × 0.3–0.5 cm; leaves 6–15, spreading, triangular-ovate, 5–10 × 4–6 mm, apex acute. |
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Pedicels | erect, not bent in fruit, 1–3 mm. |
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Flowers | with musky, sweet odor; petals connate to 1 mm, widely spreading from near middle, white, ± yellowish green at base, red-lineolate on keel, drying purplish, elliptic, 6–10[–12] × 2–3.5[–5] mm, apex acute, corolla 8–20 mm diam.; pistils separate, ascending; ovary 3–4.5 mm; styles 1–1.5 mm. |
calyx 3–4 × 4–5 mm; petals connate 1–1.5 mm, pale to medium yellow, 9–10 × 2–3 mm, apex acute, tips slightly outcurved; pistils connivent, erect. |
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Corms | subglobose to oblong, 0.7–3.5 cm × 5–20 mm. |
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Follicles | widespreading, with adaxial margins nearly horizontal. |
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Unripe | follicles erect. |
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2n | = 68. |
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Dudleya blochmaniae |
Dudleya gnoma |
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Phenology | Flowering late spring. | |||||
Habitat | Thin, gravelly volcanic soil | |||||
Elevation | 20-70 m (100-200 ft) | |||||
Distribution |
CA; nw Mexico
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CA |
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Discussion | Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Dudleya gnoma is known from near East Point on Santa Rosa Island and is considered seriously endangered (California Native Plant Society, http://cnps.web.aplus.net/cgi-bin/inv/inventory.cgi). McCabe estimated the total number of plants at 3200. It is like a diminutive form of D. greenei, which grows on the same island. In nature, it is uniformly small and strikingly distinct, and although somewhat larger in cultivation, it remains distinct. It has the same chromosome number as some plants of D. greenei on the same island (C. H. Uhl and R. V. Moran 1953) and doubtless would be interfertile with them. The best taxonomic treatment is uncertain. It is often grown and makes an attractive plant. In gardens it has been known by the illegitimate name D. nana and is called “White Sprite.” (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 193. | FNA vol. 8, p. 189. | ||||
Parent taxa | Crassulaceae > Dudleya > subg. Hasseanthus | Crassulaceae > Dudleya > subg. Dudleya | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Sedum blochmaniae, Hasseanthus blochmaniae, Hasseanthus variegatus var. blochmaniae | |||||
Name authority | (Eastwood) Moran: Leafl. W. Bot. 7: 110. (1953) | S. W. McCabe: Madroño 44: 49, fig. 1. 1997 , | ||||
Web links |