Yucca baccata |
Yucca baileyi |
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banana yucca, datil yucca, Spanish bayonet |
alpine yucca, Navajo yucca |
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Habit | Plants often forming open colonies of rosettes, acaulescent or short-caulescent, shorter than 2.5 m. Stems, if present, decumbent, 1–24, aerial or subterranean, simple or sometimes branched, to 2 m. Leaf blade erect, bluish green, concavo-convex, 30–100 × 2–6 cm, rigid, scabrous or glaucous, margins brown. | Plants solitary or cespitose, forming colonies 1.3–2 m diam., acaulescent, erect or semierect, up to 0.2 m; rosettes usually small, symmetrical. | ||||
Leaf | blade yellowish green, plano-convex or plano-keeled, occasionally falcate, widest near middle, 25–45(–50) × 0.6–0.9 cm, rigid, smooth adaxially and abaxially, margins entire, recurved, filiferous, whitish, apex spinose, spine acicular, to 3.2 mm. |
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Inflorescences | erect, paniculate, dense, arising completely within to mostly extending beyond rosettes, ovoid, 6–8.2 dm, glabrous, rarely slightly pubescent; peduncle scapelike, to 0.8 m. Flowers pendent, 5–13 cm, nearly as wide; perianth campanulate; tepals connate basally to form shallow floral cup 7–12 mm, usually cream-colored, occasionally tinged with purple, 4.5–13 cm; filaments connate proximally into collarlike structure, 3.2–12 mm, fleshy, pubescent; anthers 5–7 mm; pistil 4.5–8 × 0.7–1.2 cm (usually 4–5(–7) times longer than broad); ovary 0.7–1.2 cm; style 5–7 mm; stigmas distinct. |
racemose, arising within or just beyond rosettes, 2.5–4.5(–8.5) dm; bracts erect, purplish; peduncle scapelike, 0.1–0.2 m, less than 2.5 cm diam. |
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Flowers | pendent; perianth campanulate; tepals distinct, ovate to obovate or elliptic, 5–6.5 × 1.5–3.2 cm; filaments to 2 cm, finely pubescent; pistil green, 2.5–3.2 × 0.8 cm; style white, 7 mm; stigmas lobed. |
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Fruits | pendent, baccate, indehiscent, elongate, 5–23 × 4–7.5 cm, fleshy, succulent. |
erect, capsular, dehiscent, oblong-cylindric, not usually constricted, 5 × 2.5 cm, dehiscence septicidal. |
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Seeds | dull black, obovate, 7–11 mm diam., 3 mm thick, rugose. |
dull black, thin, 6–10 mm. |
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Yucca baccata |
Yucca baileyi |
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Phenology | Flowering spring. | |||||
Habitat | Mountains, adjacent woodlands and grasslands | |||||
Elevation | 1300–2500 m (4300–8200 ft) | |||||
Distribution |
North America; Mexico (Chihuahua, Sonora)
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AZ; CO; NM; UT
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Some populations of Yucca baileyi comprise compact colonies of semierect, branched plants instead of scattered, cespitose individuals. These populations were recognized as var. navajoa by J. M. Webber (1953), who noted that Y. baileyi possibly hybridizes with Y. glauca and Y. angustissima. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 26, p. 427. | FNA vol. 26, p. 435. | ||||
Parent taxa | Agavaceae > Yucca | Agavaceae > Yucca | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Y. baileyi var. navajoa, Y. navajoa, Y. standleyi | |||||
Name authority | Torrey: in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 221. (1859) | Wooton & Standley: Contr. U.S. Natl. Herb. 6: 114. (1913) | ||||
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