Yucca treculeana |
Yucca constricta |
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Don Quixote's lace, izote de chocha, palma pita, Spanish dagger, Trecul yucca |
Buckley yucca, Buckley's yucca |
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Habit | Plants often forming colonies of rosettes, arborescent, to 7 m; rosettes with leaves hanging at various angles, giving an overall ragged appearance. | Plants forming small to large, open colonies, acaulescent or occasionally caulescent and arborescent; rosettes usually small, asymmetrical. |
Stems | 1–8, occasionally 2–5-branched, 14–15 cm diam. |
procumbent, to 0.4 m. Leaf blade divergent, spreading, linear or somewhat wider near middle, mostly straight, flattened or plano-convex, 25–65 × (0.3–)0.7–1.5 cm, soft, rigid, margins entire, becoming filiferous, whitish or light green. |
Leaf | blade erect, yellowish to bluish green, usually U- or V-shaped in cross section, thick, 36–128 × 1.6–7 cm, rigid, scabrous, margins entire, filiferous with straight, coarse fibers, light brown. |
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Inflorescences | erect, paniculate, arising mostly within rosettes, variable in shape, usually ovoid, 18 dm, glabrous, rarely slightly pubescent; peduncle scapelike, 0.3 m or longer. |
paniculate, racemose distally, arising 2–4.6 dm beyond rosettes, ovoid, 4.5–13 dm, distance from leaf tips to proximal inflorescence branches more than twice leaf length when fully expanded, glabrous; raceme 20–25 cm; proximal branches 15–25 cm; bracts erect; peduncle scapelike, 1–2 m, less than 2.5 cm diam. |
Flowers | pendent; perianth globose; tepals distinct, cream-colored, occasionally tinged with purple, ovate, 2.7–8.1 × 1–3.4 cm, apex rounded or acute; filaments 1–2.7 cm, short-pubescent proximally; anthers 1–6 mm; pistil 1.5–3.5 × 0.5–1 cm; ovary 1.3–3.3 cm; style 2–8 mm; stigmas distinct. |
pendent; perianth hemispheric; tepals distinct, pale greenish white, thin, 2.5–4.8 × 1.1–2.6 cm, apex acute; filaments 1.7–2.2 cm, pubescent; anthers 3.2 mm; pistil slender, cylindric, 2.5–3.8 × 0.5–0.6 cm; style whitish or pale green, 8–11 mm; stigmas lobed. |
Fruits | pendent, baccate, indehiscent, 4.4–18.7 × 1.8–4.6 cm, fleshy, succulent. |
erect, capsular, dehiscent, oblong-cylindric, deeply constricted near middle, (3.5–)4.6–6.3 × (1.5–)2.5–4.3 cm, dehiscence septicidal. |
Seeds | black, 5–14 mm diam., 1–5 mm thick. |
glossy black, thin, 10–15 mm diam. |
Yucca treculeana |
Yucca constricta |
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Phenology | Flowering mid winter–spring. | Flowering spring. |
Habitat | Grassy or rocky slopes or mesas, brushland, chaparral | Brushwood, grassland areas |
Elevation | 0–1600 m (0–5200 ft) | 300–700 m (1000–2300 ft) |
Distribution |
NM; TX; n Mexico (Chihuahua, Coahuila, Tamaulipas, Zacatecas)
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TX; ne Mexico
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Discussion | S. D. McKelvey (1938–1947) treated Yucca tenuistyla and Y. louisianensis as synonyms of Y. constricta. The major differences among these entities involve vestiture in the inflorescences. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 26, p. 428. | FNA vol. 26, p. 438. |
Parent taxa | Agavaceae > Yucca | Agavaceae > Yucca |
Sibling taxa | ||
Synonyms | Y. argospatha, Y. aspera, Y. baccata var. australis, Y. baccata var. macrocarpa, Y. canaliculata, Y. canaliculata var. pendula, Y. crassifila, Y. longifolia, Y. torreyi, Y. treculeana var. succulenta, Y. undulata | |
Name authority | Carrière: Rev. Hort., 580. (1858) | Buckley: Proc. Acad. Nat. Sci. Philadelphia 14: 8. (1863) |
Web links |