Yucca angustissima var. avia
in A. Cronquist et al., Intermount. Fl. 6: 534. 1977.
Revision as of 03:37, 27 July 2019 by FNA>Volume Importer
Plants acaulescent to short-caulescent. Stems erect, to 2 m. Leaf blade lanceolate, 40–60 cm, apex long-tapering. Inflorescenses racemose, 8–18 dm; peduncle 0.3–0.5 m. Flowers 3.5–4.5(–5.2) cm; style 7–10 mm. Capsules deeply constricted, 3.5–5.5 cm.
Phenology: Flowering late spring–early summer.
Habitat: Loamy, rocky soils
Elevation: 2500 m
Discussion
J. L. Reveal (1977c) separated var. avia from var. kanabensis, and believed it to be more closely related to var. angustissima. S. L. Welsh et al. (1993) considered var. avia to be a northern, high elevation variant at the end of a cline within the species. It occurs in loamy, rocky soils instead of the sandy soils that the other varieties inhabit. Little is known about this variety.
Selected References
None.
Lower Taxa
None.