Yucca rupicola

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Ordo: Asparagales

Familia: Asparagaceae
Subfamilia: Agavoideae
Genus: Yucca
Sectio: Y. sect. Chaenocarpa
Series: Y. ser. Rupicolae
Species: Yucca rupicola
Varietas: Y. r. var. rigida – Y. r. var. rupicola
Name

Yucca rupicola Scheele
References

Linnaea; Ein Journal für die Botanik in ihrem ganzen Umfange. Berlin 23:143. 1850
USDA, ARS, Germplasm Resources Information Network. Yucca rupicola in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 08-Apr-12.

Yucca rupicola is a plant in the family Asparagaceae, known as the twistleaf yucca, twisted-leaf yucca, Texas yucca[3] or twisted-leaf Spanish-dagger.[4] The species was described by George Heinrich Adolf Scheele in 1850.[5] This is a small, acaulescent plant with distinctive twisted leaves. It is native to the Edwards Plateau region of Texas and also to northeastern Mexico (Coahuila, Nuevo León).[3][6]

Yucca rupicola forms colonies of rosettes, lacking trunks above-ground but producing a branched caudex under the surface. Leaves are narrowly lanceolate, slightly succulent, twisted, up to 60 cm long but about 40 mm wide at its widest point. Flowers are pendant (drooping), bell-shaped, white or greenish. Fruit is a dry capsule up to 6 cm long.[7][8][9]

References

Clary, K.; Hodgson, W.; Salywon, A.; Puente, R. (2020). "Yucca rupicola". IUCN Red List of Threatened Species. 2020: e.T117428510A117470187. doi:10.2305/IUCN.UK.2020-1.RLTS.T117428510A117470187.en. Retrieved 20 November 2021.
"The Plant List: A Working List of All Plant Species".
"Yucca rupicola (Twistleaf yucca)". Native Plant Database. Lady Bird Johnson Wildflower Center. 2013. Retrieved 20 December 2013.
BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
Adolf Scheele (1850). "Beiträge zur einer Flora von Texas". Linnaea. 23: 139–146 (page 143).
Kew World Checklist of Selected Plant Families, Yucca rupicola
Flora of North America v 26 p 431, Yucca rupicola
Scheele, George Heinrich Adolf. 1850. Linnaea 23: 143–146. Yucca rupicola

Engelmann, Georg. 1873. Transactions of the Academy of Science of St. Louis 3: 48. Yucca rupicola'

External links

photo of herbarium specimen at Missouri Botanical Garden, Yucca rupicola, collected in Texas in 1900