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Table 2 Camparison of Begonia circularis with B. lanternaria and B. picturata

From: Six new species of Begonia (Begoniaceae) from limestone areas in Northern Vietnam

 

B. circularis

B. lanternaria

B. picturata(Liu et al.[2005:]figures one and two)

Leaf

   

 Maculation

A pale ring ca. 1.5–2 cm from the margin against a dark green background

With digitate, green or dark green bands along major veins and leaf margin

With digitate, dark brown bands along major veins and leaf margin

 Adaxial surface

Hispid

Puberulous

Villous-setose or tomentose-setose, bullate at base

 Abaxial surface

Hispid on all veins

Villous on major veins

Densely shortly villous, particularly on veins

Bract

   

 Shape

Oblong to ovate, boat-shaped, margin sparsely shortly fimbriate

Elliptic to broadly-ovate, margin glandulose-ciliate

Ovate, oblong to rounded, margin ciliate

 Length (mm)

6–10 × 2.5–4

5–9 × 4–6.5

4.5–15 × 4.5–8

Male flower

   

 Outer tepal size (mm)

14–19 × 13–16

7–9 × 6–8

14–22 × 14–17

 Inner tepal size (mm)

10–13 × 2–4

5.5–6 × 2–3

10–19 × 4.–5.5

 Vestiture on outer tepals

Sparsely setulose to glabrous

Glandulose-pilose

Villous-setose

Female flower

   

 Ovary

With minute sessile glands

Glandulose-pilose

Villous-setose or hispid-setose

 Wings on ovary

Deltate

Crescent-shaped

Crescent-shaped