Table 1 Comparison of Asarum pubitessellatum and its allies, A. crassisepalum and A. taipingshanianum
| Â | A. crassisepalum | A. taipingshanianum | A. pubitessellatum |
|---|---|---|---|
Rhizomes | Elongated | Elongated | Short |
Leaves | Â | Â | Â |
Shape | Triangular-oblong to sagittate | Triangular-oblong | Triangular-ovate to sagittate |
Size | 4–9 × 3.5–6 cm | 3–6 × 3.4–4.1 cm | 8.5–13 × 6–7.5 cm |
Apex | acute to acuminate | obtuse to acute | acute to acuminate |
Flower | Â | Â | Â |
Size (in diameter) | 1–2 cm | 1–2 cm | ca. 3 cm |
Perianth-tube shape | Conical | Conical to cylindrical | Conical |
Tubercle on the base of perianth-lobe | Scar-like | Absent or scar-like | Absent |
Trichome type on the inner surface of perianth-tube | Sessile unicellular glandular trichome | Stalked unicellular-- glandular trichome | Multicellular single trichome |
Pollen micromorphology | Incomplete reticulate with small supratectate granules | Compactly rugulate with small supratectate granules | Perforate |