Verbatim text: Cronquist, A. and D. D. Keck. 1957. A reconstitution of the genus Machaeranthera. Brittonia 9: 231–239. Author: Cronquist, A., Keck, D.D
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to the Agavaceae (Yucca, Hesperaloe, Agave, Manfreda, and Furcraea). A. Cronquist (1981) based his broadly circumscribed Agavaceae on a common xerophytic
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considered by A. Cronquist and D. D. Keck (1957) to be primitive members of the genus Machaeranthera, where they were recently maintained (Cronquist 1994). T.
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301--323. Mason, H. L. 1957. A Flora of the Marshes of California. Berkeley. Reveal, J. L. 1977b. Potamogetonaceae. In: A. Cronquist et al. 1972+. Intermountain
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D. Keck (1932, 1936b, 1937, 1937b, 1938, 1940b, 1945), Keck and A. Cronquist (1957), and F. S. Crosswhite (1965, 1965b, 1965c, 1966, 1967, 1967b, 1967c)
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speciesNothocalaïs alpestris (A. Gray) K. L. Chambers Contr. Dudley Herb. 5: 66. 1957. Kenton L. Chambers Common names: Alpine lake false dandelion Basionym: Troximon
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evolution. Syst. Bot. 29: 654–669. Holmgren, P. K. and A. Cronquist. 2005. Cleomaceae. In: A. Cronquist et al. 1972+. Intermountain Flora. Vascular Plants of
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speciesPenstemon davidsonii varietyPenstemon davidsonii var. menziesii (D. D. Keck) Cronquist in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 4: 379. 1959. Craig C
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speciesPenstemon montanus varietyPenstemon montanus var. idahoensis (D. D. Keck) Cronquist in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 4: 394. 1959. Craig C
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richardsonii varietyPenstemon richardsonii var. dentatus (D. D. Keck) Cronquist in C. L. Hitchcock et al., Vasc. Fl. Pacif. N.W. 4: 401. 1959. Craig C
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member of Gnaphalieae, was collected near a wool mill in South Carolina in 1957 (G. L. Nesom 2004c). It is native to Australia and may be characterized as
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Wasco, and Wheeler counties in north-central Oregon. D. D. Keck and A. Cronquist (1957) cited a specimen from Wheeler County (L. F. Henderson 5503, CAS) as
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Barkley1978c C Cronquist1943a Cronquist1945a Cronquist1945b Cronquist1947a Cronquist1948a Cronquist1950a C cont. Cronquist1955a Cronquist1955b Cronquist1957a Cronquist1977a
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assignment of this species has been debated (e.g., A. Cronquist and D. D. Keck 1957; G. L. Nesom 1991e; Cronquist 1994). S. L. Welsh et al. (1987) underlined similarities
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C Clausen1940b Clausen1948a Clokey1939a Cronquist1957a K Keck1927a K cont. Keck1932a Keck1936a Keck1937a Keck1937b Keck1938a K cont. Keck1938b Keck1940a
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Glabri speciesPenstemon lemhiensis (D. D. Keck) D. D. Keck & Cronquist Brittonia 8: 248. 1957. Craig C. Freeman Common names: Lemhi beardtongue Endemic Basionym:
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et al. 1978; A. Cronquist 1955, 1994; Fernald 1950; H. A. Gleason and A. Cronquist 1991; E. Hultén 1955, 1968; A. E. Porsild 1950b, 1957, 1964; A. E. Porsild
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= 4. w North America, Mexico. Species 7 (4 in the flora). A. Cronquist and D. D. Keck (1957) correctly grouped the then known members of sect. Blepharodon
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681 pp. Mason, H. L. 1957. A Flora of the Marshes of California. Berkeley. Reveal, J. L. 1977. Sparganiaceae. In: A. Cronquist et al. 1977. Intermountain
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(including Glinus Linnaeus and Mollugo Linnaeus) is excluded (e.g., A. Cronquist 1981). Mesembryanthemum has been divided into segregate genera based largely
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