Characters

C. maianhii

C. amplexicaulis

C. cattienensis

C. granthamiana

C. krempfii

C. puhoatensis

C. annamensis

Leaf length (cm)

13-20

12-22

35-36

7-11.5

28.5-31

17-23

15-20.5

Leaf length (cm)

4-6

4-8

8.5-9

2.7-4.5

6-7.5

5-6.5

5-9

Leaf apices

Acuminate

Obtuse

Acute

Bluntly acuminate to caudate

Shortly, broadly, and bluntly acute or acuminate

Acuminate or narrowly acuminate

Attenuate or narrowly acuminate

Leaf bases

Obtuse or nearly round

Auriculate and amplexicaul

Auriculate

Rounded to obtuse

Cordate

Rounded or broadly obtuse

Acute to partially obtuse and slightly assymetric

Pairs of lateral veins

14-19

15-18 (-20)

15-18

6-7

14-20

10-13

10-13

Petiole length (cm) and features

0.7-1.2, pubescent

0.3-0.5, glabrous

1, glabrous

0.5-1, glabrous or pubescent

1.5, glabrous

0.8-1.6, puberulous

1-1.3, sparsely appressed puberulent

Pedicel length (cm)

0.9-1.3

1.1-1.2

1-1.2

Sessile

1.5

0.7-1

0.7-1

Perule number

N/a

N/a

6

12 or more, persistent

About 13

Number not given

N/a

Bracteole

Number

3(-4)

6-7

N/a

N/a

2

3-4

3-4

Flower diameter (cm)

5.5-6.5

4-7

5-7

10-14

6-7

4.5-6

4.5-6

Flower number

Solitary, nodding

Solitary

Mostly solitary, upright, or horizontal

Solitary, sessile

Solitary

1-2, borne on a short bracteate shoot

1-2(-3), borne on a short bracteate shoot, nodding

Sepal number

5-6(-7),persistent

5

N/a

N/a

N/a

5, persistent

5, persistent

Petal number

14-15

8-13

8

8-10

10

12-13

20-22

Petal colour

Red

Pinkish purple

Orange with narrow, white margins

White

White(?)^*, red(?)^{^}

Bright yellow, sometimes with large red patch on outer petals

Bright red with a distinct and intense white margin

Petal features

Both sides tomentose, innermost petals basally united with outermost filaments for 1.5-1.6 cm

Brownish velutinous abaxially, basally united with outermost filaments for 1.1 cm

In 2 whorls of 5 and 3, sometimes emarginated

Petals basally connate and adnate with filaments for 0.5-1 cm from base

Puberulous on inner face, densely so towards base, grey-velutinous on back, basally united with outermost filaments for 1-2 cm

Petals abaxially pubescent, basally united with outermost filaments for 0.5-0.7 cm

Shiny, arranged in 3 whorls, outermost whorl abaxially velutinous at tips, innermost petal whorl basally united with filaments for 0.5-1 cm

Filament length (cm) and features

2.5-3.5, pubescent at base, in 5-6 whorls, outer filaments basally united for 2-2.2 cm

3.2, free parts of filaments glabrous, outer filaments united for 2.2 cm forming a fleshy cup, minutely velutinous inside and out

4-5, glabrous, basal third fused, basally adnate to inner petal whorl

2.5-3.5, glabrous, outer filaments basally united for 0.5-0.6 cm

2-2.5, lower half puberulous, glabrous above, outer filaments basally united for 0.7-0.8 cm into a tube

2.5-2.8, glabrous, in 4-5 whorls, outer filaments basally united for 1.5-1.8 cm forming a cup, inner filaments united for 0.3-0.5 cm, free above union

2.4-3, glabrous, 4-5 series, outer filaments basally connate for 1.5-1.8 cm forming a cup, inner filaments basally connate for 0.4-0.7 cm

Locule number

3-4

3

5

5

5

3(-4)

4-5

Styles

3-4, free to base, tomentose 2.2-2.4 cm long

3, free to base, glabrous, 2-2.1 (-2.5) cm long

5-parted, basally fused, 3.5-4.5 cm long

5-parted, connivent at base, apically dividing into 5 recurved arms, densely white tomentose up to stigmatic arms, 2.5 cm long

5, free to base, thinly puberulous, 1.5 cm long

3(-4), free to base, pubescent, 1.8-2.3 cm long

4-5, free to base, tomentose, 1.8‒2.3 cm long, persistent

Length of filaments to styles

Filaments longer than styles

Filaments longer than styles

Filaments equal to or longer than styles

Filaments equal in length to styles

Filaments longer than styles

Filaments longer than styles

Filaments shorter than or equal to styles

Ovaries

Ovate, ribbed, tomentose

Ovoid, glabrous

Tomentose

Globose-ovoid, tomentose

Ovoid-globose

Ovoid with slight longitudinal striations, pubescent

Flattened-globose, terminating with 4-5persistent style remnants, strongly 4‒5-lobed, yellow, tomentose

Capsules

Subglobose, furfuraceous, sparsely pubescent

Globose, 3 well-marked longitudinal grooves, shiny

Not seen

Subglobose surrounded by persistent sepals, furfuraceous

Not seen

Not seen

Flattened-globose, with persistent sepals and style remnants, 4-5 irregularly lobed

Columellae

Stout, 2.8-3.2 cm long

Not given

Not given

Stout, 1.2-1.5 cm long

Not given

Not given

Not given

Seeds/locule

1-3

Not given

Not given

Not given

Not seen

2

1-2