Figure 1
From: Haplotype variation of cpDNA in the agamic grass complex Pennisetum section Brevivalvula (Poaceae)

Geographical distribution of the seven main sites (numbered 1–7) and of three additional sites (a, b, c) where seed of the Pennisetum Brevivalvula section taxa were collected. The major phytogeographical regions are indicated by (I) undifferentiated Sudanian woodland; (II) Sudanian woodland with abundant Isoberlinia; (III) Guineo–Congolian mosaic of rainforest and secondary grassland; (IV) rainforest.