Characters |
C. pingtaoi |
C. hooperianum
|
C.
pulchellum |
C. longhushanense |
Calyx length |
6 mm |
3–4 mm |
3–4 mm |
6 mm |
Corolla-tube length |
12–14mm |
8–9 mm |
12–18mm |
12–16
mm |
Corolla lobe shape |
Broadly ovate (Figure 4: a) |
Ovate |
Ovate-oblong |
Oblong (Figure 4: e) |
Corolla color |
Outer surface greenish-white, inner surface purplish red
(Figure 4: d) |
outer surface with light green, inner surface white,
with purple spots on the top of corolla lobe |
Outer surface slightly
greenish, inner surface white |
Outer surface greenish-white, inner
surface white, usually with a purple minute spot on the top of corolla
lobe (Figure 4: h) |
Corona tip |
Connivent, slightly exceeding corolla throat (Figure 4: c) |
Separate, reaching to the middle of the corolla lobe or farther |
Barely connivent, slightly exceeding corolla throat |
Connivent, not
exceeding corolla throat (Figure 4: g) |
Follicles |
Fusiform, with three ribs |
/ |
Oblong, without ribs |
Fusiform, with three ribs |