Yucca louisianensis Trelease. Common name: Louisiana Yucca. Phenology: Apr-Jun. Habitat: Dry woodlands and barrens with sandy soil, such as longleaf pine and shortleaf pine woodlands, sandstone outcrops, post oak woodlands, sandy inclusions in prairies, and openings in shrublands (in s. TX). Distribution: S. Arkansas and s. Oklahoma south to w. Louisiana and e. Texas; reported in e. Louisiana and s. Mississippi.
Origin/Endemic status: Native
Taxonomy Comments: Populations in loamy soils in the Post Oak Savanna Region of TX often possess glabrous inflorescences, and populations on the South Texas Sandsheet are also glabrous or puberulent and have unusually long leaves, to 100 cm long. These populations may represent undescribed taxa (E. Keith, pers. comm.).
Synonymy ⓘ: = Ar, K1, K4, NS, S13, Tx, Clary & Adams (2021); = n/a — S; < Yucca flaccida Haworth — FNA26, POWO; < Yucca louisianensis Trel. — ETx1. Basionym: Yucca louisianensis Trel. 1902
Links to other floras: < Yucca flaccida - FNA26
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Heliophily ⓘ: 8
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