Table 1. Leaf architectural characters and related morphological characters [23], [26].

Characteristic	Encoding number					Figure 1
	0	1	2	3	4
1. Whole lamina shape	Lanceolate	Ovate	Oblong	Longly oblong	Broadly oblong	See A
2. Base only	Auriculate	Rounded	Cuneate			See B
3. Apex	Long acuminate	Short acuminate	Obtusely acuminate	Acute		See C
4. Abaxial surface	Hairy	Glabrous				/
5. Adaxial surface	Hairy	Glabrous				/
6. Reticulate veins	Slight	Unconspicuous	Obvious	Conspicuous		See G
7. Secondary veins shape	Bend	Zigzag				See D
8. Secondary veins balance	Uniform	Uneven				See E
9. Areoles development	Incompletely	Imperfect				See K
10. Margin shape	Entire	Spinose	Cassidate	Setaceous	Spherulate	See H
11. Margin spacing	Regular	Irregular				See I
12. ASVPV on upper part1	Nearly right angle	Sharp angle				/
13. ASVPV on middle part	Nearly right angle	Sharp angle				/
14. ASVPV on lower part	Nearly right angle	Sharp angle				/
15. VADSV2	Nearly uniform	Upper secondary veins more obtuse than lower	Upper secondary veins more acute than lower			See F
16. Veinlets		Simple	1–2 times branched	More than 3 times branched		See J

¹ASVPV means angulation between secondary veins and primary veins;

²VADSV means variations in angle of divergence of secondary veins.