30 A.O. TUCKER AND J. JANICK
(b)(c)(a)Fig. 1.25. Dioscorea mexicana: (a) fol. 96v; (b and c) inflorescence and rhizome of
D. mexicana, respectively (Courtesy of Michael Charters and The Smithsonian, https://
smithsoniangardens.wordpress.com/2013/04/11/i-yam-not-a-tortoise-but-a-plant/,
respectively).
the leaves are matches (Ross-Ibarra and Molina-Cruz 2002). However,
these cultivated species have relatively smooth fruits, and a closer cor-
respondence would beC. texanus(Mull. Arg.) Small (Figs. 1.27b and ̈
1.27c) with fruits that are coated with trichomes.
- Fol. 21r.Euphorbia thymifolia(Fig. 1.28).The spreading growth
pattern, tiny green to reddish leaves, and reddish axillary flowers