| Leaf blade |
16–24×5–7.5 cm, margin entire |
9–14×3–5 cm, margin entire |
5–14×2.2–4.4 cm, distal margin denticulate |
| Petiole |
5.5–17 cm long |
3.5–7 cm long |
7.5–25 cm long |
| Bracts |
white, 10–12 mm long, almost equal to perianth |
white, 16-20 mm long, longer than perianth |
apex often with red spots, 6 mm long, shorter to perianth |
| Perianth tube |
7–8 mm long, Ø 7–8 mm |
6 mm long, Ø 7–10 mm |
5 mm long, Ø 5 mm |
| Perianth lobes |
3–4×4–5 mm, shorter than tube, white both side |
8–10×5–6 mm, longer than tube, white both side |
3.5×4 mm, shorter than tube, inside white and outside often with red spots at apex |
| Stamens |
oblong, 2.5–3×1.5 mm, inserted in the lower part of tube |
ovate, 2×1 mm, inserted in the middle of tube |
oblong, 2.5×0.9 mm, inserted in the middle or lower one-third of the tube |
| Pistil |
nearly clavate, 6–7mm long |
obconical, ca. 7 mm long |
clavate, 4.5–5.5 mm long |
| Stigma |
Ø 4–5 mm, upper surface with irregular reddish speckle, lower surface white |
Ø 4–5 mm, upper and lower surface all white |
Ø 2.5 mm, upper surface white, lower surface dark red |