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Perennial herb, shrub, tree, fibrous succulent or not, from bulbs or rhizomes. Stem: above ground or not, branched or not. Leaf: simple, deciduous or not, basal or in terminal rosettes, generally sessile, linear, lanceolate, oblanceolate or ovate, fibrous or not, thin and flexible or thick and rigid or succulent; margin entire, fine-serrate, dentate, or with filaments, tips rigid or flexible, with a spine or not. Flower: bisexual; perianth parts 6, in 2 petal-like whorls, free or ± fused; stamens 6, ± fused to perianth, filaments often wide, succulent; ovary superior or inferior, chambers 3, style 1 (thick, poorly defined), stigma head-like or 3-lobed. Fruit: capsule, indehiscent, loculicidal, or septicidal. Seed: few to many, ± flat or ovoid, generally black.
23 genera, 637 species: worldwide. —Scientific Editors: Dale W. McNeal, Thomas J. Rosatti.
Key to Agavaceae
Shrub- or tree-like, generally branched from woody caudex, occasionally dying after fruiting. Leaf: rosette basal or at branch tips, 2–15 dm, linear, thick, ± rigid, stout-spine-tipped, bases ± expanded, margins generally curved up, entire or dentate, often fibrous-shredding. Inflorescence: panicle [raceme], erect (pendent), dense; peduncle generally < 2 cm wide; bracts generally ascending. Flower: generally pendent, 3–13 cm; perianth parts 6 in 2 whorls, generally ± fused, ± white, fleshy, waxy; stamens 6, filaments ± thick, fleshy; ovary superior, 3(6)-chambered, generally green, style short, often thick, poorly defined, stigmas 3-lobed, white to pale green. Fruit: berry-like or generally capsule, erect or pendent, tardily septicidal or generally indehiscent. Seed: ± many in 2 rows per chamber, often flat, black.Key to Yucca
± 40 species: eastern coastal plain, southeastern, sc, & especially dry southwestern North America; northern, central-western Mexico, northern Central America. (Haitian: yuca or manihot, because young inflorescences occasionally roasted for food) Pollinated at night by small moths while laying eggs in ovary. Yucca whipplei moved to Hesperoyucca.
Unabridged references: [Hess & Robbins 2002 FNANM 26: 423–439]
Plant < 2.5 m. Stem: ± 0 or short-decumbent, branched or not, rosettes at tips, ± at ground. Leaf: 50–100 cm, 2–6 cm wide, glaucous, ± dark green, expanded base ± 10 cm, 5 cm wide, ± red, margins fibrous-shredding. Inflorescence: 6–8 dm, purple-tinged, within to distal ± 1/4 exserted from rosettes, generally glabrous. Flower: pendent; perianth 5–13 cm, bell-shaped, parts lanceolate, fused > 1 mm, red-brown abaxially, ± white adaxially; pistil 5–8 cm. Fruit: berry-like, pendent in age, 15–17 cm, fleshy in youth.
Uncommon. Dry Joshua-tree woodland; 800–1300 m. eastern Desert Mountains; to Colorado, Texas, Mexico. Reported to hybridize with Yucca schidigera. A 2nd variety in Arizona, New Mexico, Mexico. May–Jun [Online Interchange]
Previous taxon: Yucca
Next taxon: Yucca brevifolia
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 21 2014
Citation for this treatment: [Author of taxon treatment] 2013. Yucca, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=67839, accessed on Oct 21 2014
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|Yucca baccata var. baccata|
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© 2004 James M. Andre
|Geographic subdivisions indicated for the distribution of Yucca baccata var. baccata|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
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