Difference between revisions of "Yucca rupicola"
Linnaea 23: 143. 1850.
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|common_names=Twisted-leaf yucca | |common_names=Twisted-leaf yucca | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Yucca rupicola var. tortifolia | |name=Yucca rupicola var. tortifolia | ||
|authority=Engelmann | |authority=Engelmann | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Agavaceae;Yucca;Yucca rupicola | |hierarchy=Agavaceae;Yucca;Yucca rupicola | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Yucca rupicola | name=Yucca rupicola | ||
| − | |||
|authority=Scheele | |authority=Scheele | ||
|rank=species | |rank=species | ||
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|publication title=Linnaea | |publication title=Linnaea | ||
|publication year=1850 | |publication year=1850 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V26/V26_886.xml |
|genus=Yucca | |genus=Yucca | ||
|species=Yucca rupicola | |species=Yucca rupicola | ||
Latest revision as of 22:18, 5 November 2020
Plants usually forming open colonies of rosettes, acaulescent, with branching subterranean caudices; rosettes 2–15 per colony, each rosette with fewer than 100 leaves. Leaf blade lanceolate, twisted, strongly concave, widest at middle, distinctly narrowing toward base, broadened at stem attachments, 35–60 × 1.7–4 cm, somewhat fleshy, flexible, margins denticulate or wavy, dark orange or reddish brown, apex pointed. Inflorescences paniculate, arising beyond rosettes, narrowly ovoid, 2.5–10 dm; branches 0.7–2 dm; bracts erect; peduncle scapelike, 0.3–1.5 m, 1.5–2 cm diam. Flowers pendent; perianth campanulate; tepals distinct, white or greenish white, ovate, 4–7 × 1.5–3 cm, apex sharply acuminate; filaments 1.8–3.2 cm; pistil 2.5–4.5 cm; style white or greenish, 12–20 mm; stigmas lobed. Fruits erect, capsular, dehiscent, ellipsoid to cylindric, 4–5.5 × 2–3 cm, dehiscence septicidal. Seeds dull black, thin, 6–8 mm diam.
Phenology: Flowering late spring.
Habitat: Rocky hillsides of limestone ledges, open plains, woodlands
Elevation: 400–900 m
Discussion
Yucca rupicola is endemic to southeastern Edwards Plateau. It is the only species in the flora with flaccid, twisted leaves.
Selected References
None.