Horticultural Reviews, Volume 44

(Marcin) #1

  1. IDENTIFICATION OF PHYTOMORPHS IN THE VOYNICH CODEX 57


(b)

(a)

Fig. 1.55. Viola bicolor: (a) fol. 9v; (b) flowers and leaves of V. bicolor (Courtesy of Daniel
Reed).


to Arizona, with a center of diversity in eastern Texas (Shinners 1961;
Russell 1965).
The delineation ofV. bicoloras native to North America and not intro-
duced from elsewhere was only first fully elucidated by Shinners in



  1. Prior to 1961,V. bicolorwas considered doubtfully native and
    also classified as a variety of the EurasianV. kitaibelianaSchult. [var.
    rafinesquii(Greene) Fernald] and often confused withV. tricolorand
    V. arvensisMurray (Fernald 1938). The North American V. bicolor,
    besides being seasonally dimorphic with fertile and cleistogamous

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