Camellia sect. Piquetia

Key to 15 species of Camellia sect. Piquetia

1. Flowers red to purple..........................................................................................................................................................................2

- Flowers yellow ..................................................................................................................................................................................8

2. Leaf blades < 21 cm long .............................................................................................................................................. C. annamensis View in CoL

- Leaf blades> 22 cm long ....................................................................................................................................................................3

3. Ovary 3‒4-locular.......................................................................................................................................................... C. honbaensis View in CoL

- Ovary 5‒6-locular...............................................................................................................................................................................4

4. Flowers bright red...............................................................................................................................................................................5

- Flowers dark red to purple..................................................................................................................................................................6

5. Petals 10‒12, without white margins...................................................................................................................................... C. hiepii View in CoL

- Petals 7‒8, with white to light yellow margins ............................................................................................................ C. cattienensis View in CoL

6. Leaf blades 24‒32 cm long, 6‒8 cm wide; secondary veins 17–23 pairs ..........................................................................................7

- Leaf blades 29‒55 cm long, 9.5‒15 cm wide; secondary veins 25–30 pairs ................................................................. C. piquetiana View in CoL

7. Leaf base broadly acute or obtuse ............................................................................................................................ C. phuongchiana View in CoL

- Leaf base cordate................................................................................................................................................................ C. krempfii View in CoL

8. Leaf base cordate ...............................................................................................................................................................................9

- Leaf base rounded to acute...............................................................................................................................................................10

9. Leaves hairy..................................................................................................................................................................... C. dalatensis View in CoL

- Leaf glabrous...................................................................................................................................................................... C. sphamii View in CoL

10. Petals yellow-apicot with pink margin ...................................................................................................................... C. dongnaiensis View in CoL

- Petals not so .....................................................................................................................................................................................11

11. Petals 9–12........................................................................................................................................................................................12

-. Petals 4–7..........................................................................................................................................................................................14

12. Leaf blades 35–40 cm long, 6–8 cm wide; sepals abaxially glabrous................................................................................... C. vidalii View in CoL

- Leaf blades 20–32 cm long, 5–8 cm wide; sepals abaxially hairy ...................................................................................................13

13. Bracteoles 4–5, 15–18 mm long, 4–6 mm wide; sepals with cuspidate apex ........................................................... C. dakplaoensis

- Bracteoles 2–3, 2–2.5 mm long, 2.5–3 mm wide; sepals with rounded apex .......................................................... C. langbianensis View in CoL

14. Leaf blades 10–30 cm long, 1.8–5.6 cm wide, secondary veins 13–18 pairs; ovary 3–4-locular............................... C. sonthaiensis View in CoL

- Leaf blades 30–35 cm long, 7.5–8.5 cm wide, secondary veins 15–30 pairs; ovary 4–6-locular...................................... C. proensis View in CoL