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34 species in the flora). Argue, C. L. 1974. Pollen studies in the Alismataceae (Alismaceae). Bot. Gaz. 135: 338--344. Argue, C. L. 1976. Pollen studies

Kalanchoë, as by P. Boiteau and L. Allorge-Boiteau (1995). M. Lauzac-Marchal (1974) argued for separation; the case is not clear. Some species of Bryophyllum are

Machaerina Vahl (G. Kükenthal 1942). Later studies (cited by G. C. Tucker 1987) argue against such a broad circumscription of the genus. Machaerina was excluded

of auxin or other compounds that migrate to the basal end (B. E. Haissig 1974). Riparian species (e.g., Salix alaxensis, S. lasiandra, S. pseudomyrsinites)

altissimum (Jacquin) Swartz (L. A. Garay and H. R. Sweet 1972, 1974). Others, however, argued that Jacquin’s name was based on Jacquin’s collections and that

be misapplied (e.g., S. Rauschert 1974; A. Cronquist 1994; E. G. Voss 1972–1996, vol. 3), W. L. Applequist (2002) argued convincingly that the name is indeed

pseudo-arnica (L.C. Bliss 1988; G.J. Breckon and M.G. Barbour 1974; K.B. Macdonald and M.G. Barbour 1974). The grasses Elymus and Festuca are dominants. Pacific

H. Roberts 1956) and C. franciscana, were reexamined by L.D. Gottlieb (1974, 1974b), using electrophoretic techniques. He showed that small differences

1984, 1987), the Wind River flora of northwestern Wyoming (H.D. MacGinitie 1974), and the Green River flora of Colorado and Wyoming (H.D. MacGinitie 1969)