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Yucca toftiae S.L.Welsh
Great Basin Naturalist 34: 308 (1974).
Family: AGAVACEAE

Accepted Scientific Name: Yucca angustissima var. toftiae (S.L.Welsh) Reveal
Intermount. Fl. [Cronquist et al.] 6: 534 (1977). Cronquist et al.

Synonyms:

See all synonyms of Yucca angustissima

Subspecies, varieties, forms and cultivars of plants belonging to the Yucca angustissima group

  • Yucca angustissima Engelm.: Flowers 4.5–5.5 cm; leaf blade 25–45 cm; style 10–13 mm. Distribution: Arizona, Utah, New Mexico, Colorado.
  • Yucca angustissima var. avia Reveal: Flowers 3.5–4.5(–5.2) cm; leaf blade 40–60 cm; style 7–10 mm. Distribution: Utah only.
  • Yucca angustissima var. kanabensis (McKelvey) Reveal: Flowers 5.5–6.5 cm; leaf blade 45–80(–150) cm; pistil 3–3.5 cm; style 5–8 mm; stem plus peduncle and inflorescence 2–3.5 m. Distribution: Arizona and Utah.
  • Yucca angustissima var. toftiae (S.L.Welsh) Reveal: Flowers 3–5.2 cm; leaf blade 20–75 cm; pistil 1.5–3.2 cm; style 3–10 mm; stem plus peduncle and inflorescence 2.3–4.5 m. Distribution: Utah only.

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