Maps of collection locations for Hosta species A Shikoku Island (black) in relation to Japan B detail of Shikoku Island with population locations for some species and varieties C details of collection locations for H. polyneuronoides (solid circles) and H. scabrinervia (an open square), and approximate ranges (circles) of H. minazukiflora (M), H. longipedicellata (L), H. samukazemontana (Sa), H. shikokiana (Sh), and H. takiminazukiflora (T). Considering conservation concerns, we refrained from disclosing the precise collection locations of these five species. The contour map was reproduced from a webpage. (https://maps.gsi.go.jp/#11/33.726624/133.351364/&base=english&ls=english&disp=1&vs=c1g1j0h0k0l0u0t0z0r0s0m0f1&d=m) in accordance with the usage regulations of the Geospatial Information Authority of Japan.

 
 
  Part of: Yahara T, Hirota SK, Fujii S, Kokami Y, Fuse K, Sato H, Tagane S, Suyama Y (2023) Molecular phylogeny and taxonomy of Hosta (Asparagaceae) on Shikoku Island, Japan, including five new species, one new subspecies, and two new status assignments. PhytoKeys 235: 137-187. https://doi.org/10.3897/phytokeys.235.99140