Table 5 Camparison of Begonia montaniformis with B. ferox and B. nahangensis
From: Six new species of Begonia (Begoniaceae) from limestone areas in Northern Vietnam
| Â | B. montaniformis | B. ferox | B. nahangensis |
|---|---|---|---|
Leaf | Â | Â | Â |
 Bullae | 2–4-tipped | Uni-tipped | Uni-tipped |
 Color | Silvery green along primary and secondary veins against blackish-malachite green background | Embellished dark maroon against green background | Embellished dark maroon against green background |
Inflorescence | Â | Â | Â |
 Peduncle length (cm) | 11–26 | 5–13 | (8) 10–12 (14) |
Male flower | Â | Â | Â |
 Tepal color | Yellowish to pinkish-green | Pale pinkish-yellow | White to light pink |
Female flower | Â | Â | Â |
 Tepal color | Yellowish-greenish | Pinkish-white | Light olive-green |
 Tepal duration | Persistent | Deciduous | Unknown |
Capsule | Â | Â | Â |
 Abaxial wing | Oblique-triangular | Crescent-shaped | Oblique-triangular |