FIGURE 10 in A preliminary study of the morphological variation of rhizomes in Zingiber Mill. and its role in taxonomy

FIGURE 10. Rhizome sections of representative species of Zingiber, showing internal colour variation. A. Z. purpureum Roscoe (bright yellow). B. Z. officinale Roscoe, a cultivar called "feng jiang (Ṃƃ)". Rhizomes are yellow or with different shades of purple. C. Z. ventricosum Bai et al. (cream). D. Z. viridescens Chen et al. (cream white when young, turning pale bluish to pale purple with age). E. Z. kerrii Craib (beige but pink at upper part of rhizome unit). F. Z. lingyunense D.Fang (varies from beige to peach coloured to purple to dark purple). Bar=1 cm for B–F. Photos: Lin Bai.