heliophila (Mackenzie) W. A. Weber Treatment appears in FNA Volume 23. Treatment on page 544. Mentioned on page 541, 543. Illustrator: Susan A. Reznicek Copyright:
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Yucca utahensis Linnaeus Sp. Pl. 1: 319. 1753. , Gen. Pl. ed. 5, 150. 1754. William J. Hess, R. Laurie Robbins Common names: Spanish-bayonet Etymology: Carib
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and L. D. Benson and R. A. Darrow (1981) recognized the variety as well; however, J. L. Reveal (1977c) declined to recognize it, a decision with which we
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var. elata, Yucca elata var. verdiensis Engelmann Bot. Gaz. 7: 17. 1882. William J. Hess, R. Laurie Robbins Common names: Palmella soap-tree yucca soap-weed
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varietyYucca elata var. verdiensis (McKelvey) Reveal in A. Cronquist et al., Intermount. Fl. 6: 533. 1977. William J. Hess, R. Laurie Robbins Endemic Basionym: Yucca
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recognition as a distinct species. J. M. Webber (1953) considered Y. campestris to be a hybrid between Y. constricta and Y. elata, and reported a distribution
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genusYucca speciesYucca glauca Nuttall Cat. Pl. Upper Louisiana, no. 89. 1813. William J. Hess, R. Laurie Robbins Common names: Beargrass Great Plains yucca soapweed
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Trelease Rep. (Annual) Missouri Bot. Gard. 22: 101, plates 104–107. 1911. William J. Hess, R. Laurie Robbins Common names: Thompson yucca bayoneta Treatment
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reverchonii Trelease Rep. (Annual) Missouri Bot. Gard. 22: 102, plate 108. 1911. William J. Hess, R. Laurie Robbins Common names: San Angelo yucca Endemic Treatment
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speciesYucca pallida McKelvey Yuccas Southw. U.S. 2: 57, plates 13, 14. 1947. William J. Hess, R. Laurie Robbins Common names: Pale yucca Endemic Synonyms: Yucca
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evidence (K. H. Clary 1997) suggests a closer relationship with Y. elata. J. M. Webber (1953) believed that Y. utahensis is a hybrid between Y. elata and Y.
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speciesYucca intermedia McKelvey Yuccas Southw. U.S. 2: 116, plates 44–47. 1947. William J. Hess, R. Laurie Robbins Endemic Synonyms: Yucca baileyi var. intermedia (McKelvey)
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first from) elsewhere in the Flora that are not pertinent here. A. A. P. G. Mem. = A A P G Memoir. [American Association of Petroleum Geologists.] Abh
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