Worldwide Geographic Distribution of 18 Brachypodium Taxa. Worldwide Geographic Distribution of 18 Brachypodium Taxa. The 18 worldwide species of Brachypodium taxa (B. arbuscula, pink; B. boissieri, black triangle; B. bolusii, violet; B. distachyon, dark blue; B. flexum, orange; B. genuense, dark-brown star; B. glaucovirens, light blue; B. hybridum, purple; B. kawakamii, magenta dot; B. madagascariense, open pink square; B. mexicanum, yellow; B. phoenicoides, aquamarine; B. pinnatum, light green; B. retusum, pale brown; B. rupestre, dark brown; B. stacei, red; B. sylvaticum, sage green; B. sylvaticum var pseudodistachyon, light-blue diagonal line). (Image adapted from Catalán et al. [2016b], Figure 2, page 15, copyright 2016, Springer.)‏ Karen-Beth G. Scholthof et al. Plant Cell 2018;30:1673-1694 ©2018 by American Society of Plant Biologists