American Crataegi. J. Arnold Arbor. 6: 5–128. Palmer, E. J. 1950. Crataegus. In: M. L. Fernald. 1950. Gray’s Manual of Botany, ed. 8. New York. Pp. 767–801
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Trudy Bot. Inst. Akad. Nauk S.S.S.R., Ser. 1, Fl. Sist. Vyssh. Rast. 9: 33. 1950. Guy L. Nesom Etymology: Greek pseudo -, deceptively similar, and genus name
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endangered endemic. Adamson, R. S. and H. M. L. Bolus. 1950. Aizoaceae. In: R. S. Adamson and T. M. Salter. 1950. Flora of the Cape Peninsula. Cape Town. Pp. 363–365
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positions ± centered between opposing lateral edges. As noted by A. Cronquist (1950) for Psilocarphus, the wings or apices of pistillate paleae of Filagininae
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Taxa Groutiella tomentosa, Groutiella tumidula Steere Bryologist 53: 145. 1950. Dale H. Vitt Etymology: For Abel Joel Grout, 1867 – 1947, American bryologist
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on trying to determine whether or not Silene is monophyletic. Maguire, B. 1950. Studies in the Caryophyllaceae. IV. A synopsis of the North American species
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genusEucommia Show Lower Taxa Eucommia ulmoides Oliver Hooker's Icon. Pl. 20: plate 1950. 1890. Michael A. Vincent Introduced Etymology: Greek eu, good or well, and
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familyMyrsinaceae genusArdisia speciesArdisia crenata Sims Bot. Mag. 45: plate 1950. 1817 ,. John J. Pipoly III, Jon M. Ricketson Common names: Coral ardisi
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Basionym: Lesquerella carinata Rollins Contr. Gray Herb. 171: 42, fig. 1E–H. 1950 Treatment appears in FNA Volume 7. Treatment on page 629. Mentioned on page
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1, 2. 2001. Robert R. Ireland Jr. Etymology: For William Russel Buck, b. 1950, American bryologist, and Latin - ella, diminutive Treatment appears in FNA
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menziesii var. menziesii (Mirbel) Franco Bol. Soc. Brot. ser. 2, 24: 74. 1950. Barney Lipscomb Common names: Douglas-fir Oregon-pine sapin de Douglas Illustrated
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varietyPseudotsuga menziesii var. glauca (Mayr) Franco Bol. Soc. Brot. ser. 2, 24: 77. 1950. Barney Lipscomb Common names: Rocky Mountain Douglas-fir pino real colorado
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genusPlatylomella Show Lower Taxa Platylomella lescurii A. L. Andrews Bryologist 53: 58. 1950. John A. Christy Endemic Etymology: Genus name Platyloma and Latin -ella
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mountains. Species ca. 50 (15 species in the flora). BocherBöcher, T. W. 1950. Contributions to the flora and plant geography of west Greenland II. Meddel
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Beitel Common names: Nodding club-moss Etymology: for R. T. Palhinha (1871–1950), a Portuguese botanist Treatment appears in FNA Volume 2. Plants on substrate
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Walter S. Flory† Endemic Basionym: Cooperia jonesii Cory Field & Lab. 18: 45. 1950 Treatment appears in FNA Volume 26. Treatment on page 302. Mentioned on page
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genusEucommia speciesEucommia ulmoides Oliver Hooker's Icon. Pl. 20: plate 1950. 1890. Michael A. Vincent Common names: Hardy rubber-tree IntroducedIllustrated
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Lower Taxa Pseudogynoxys chenopodioides (Greenman) Cabrera Brittonia 7: 54. 1950. Theodore M. Barkley† Etymology: Greek pseudo - , false or resembling, and
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speciesAllium aaseae Ownbey Res. Stud. State Coll. Wash. 18: 19, fig. 18. 1950. Dale W. McNeal Jr., T. D. Jacobsen IllustratedEndemic Treatment appears
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struthiopteris var. pensylvanica (Willdenow) C. V. Morton Amer. Fern J. 40: 247. 1950. David M. Johnson Common names: Ostrich fern fougère-à-l'autruche IllustratedEndemic
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