| 1 |
Style 2-4 mm (ca. 1.5 mm in E. japonica, ca. 1 mm in E. acuminoides, and ca. 0.4 mm in E. taitungensis) |
|
(2) |
| + |
Style 0.4-1 mm (ca. 1.5 mm in E. handel-mazzettii and 1.5-2 mm in E. macartneyi) |
|
(24) |
| |
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|
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| 2 (1) |
Sepals membranous, pale green when dry; current year branchlets 2- or 4-ribbed, terminal buds glabrous (except pubescent in E. chinensis, E. lanciformis, and E. stenophylla var. pubescens) |
|
(3) |
| + |
Sepals leathery or subleathery, brown when dry; current year branchlets terete, terminal buds spreading villous, pubescent, or puberulent |
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(13) |
| |
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|
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| 3 (2) |
Fruit ovate-ellipsoid or long ovoid |
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(4) |
| + |
Fruit globose |
|
(7) |
| |
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|
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| 4 (3) |
Current year branchlets 2-ribbed; leaf blade to 10 cm, 1.5-2.5 cm wide |
|
(5) |
| + |
Current year branchlets 4-ribbed; leaf blade 15-20 cm, more than 3 cm wide |
|
(6) |
| |
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|
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| 5 (4) |
Leaf blade narrowly lanceolate to oblanceolate, 3-6(-11) cm, apex acute, shortly acuminate, or caudate-acuminate. |
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51 E. stenophylla |
| + |
Leaf blade ovate, ovate-elliptic, or ovate-lanceolate, 2-3.5 cm, apex obtuse, emarginate, or sometimes subrounded. |
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52 E. metcalfiana |
| |
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| 6 (4) |
Leaf blade oblong-lanceolate, 15-20 cm, secondary veins ca. 20 on each side of midvein, reticulate veins obscure, base rounded; flowers solitary or to 3 in a cluster. |
|
53 E. polyneura |
| + |
Leaf blade oblong-elliptic, 7-15 cm, secondary veins 11-13 on each side of midvein, reticulate veins adaxially impressed, base cuneate; flowers solitary or to 7 in a cluster. |
|
54 E. gungshanensis |
| |
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| 7 (3) |
Sepal margins glandular |
|
(8) |
| + |
Sepal margins not glandular |
|
(9) |
| |
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| 8 (7) |
Current year branchlets and terminal buds pubescent when young but glabrescent; leaf blade lanceolate to oblong-lanceolate, 1.3-2.5 cm wide. |
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49 E. lanciformis |
| + |
Current year branchlets and terminal buds glabrous; leaf blade oblong-elliptic, 2.5-5 cm wide. |
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50 E. subintegra |
| |
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|
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| 9 (7) |
Leaf blade thickly leathery, secondary veins adaxially impressed |
|
(10) |
| + |
Leaf blade leathery or thinly leathery, secondary veins adaxially visible or obscure |
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(11) |
| |
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|
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| 10 (9) |
Leaf blade obovate to obovate-elliptic, 3-7 cm, margin not revolute and sparsely obtusely serrate, apex obtuse, subrounded, or rarely acute and with an obtuse and sometimes retuse tip; style ca. 1.5 mm. |
|
47 E. japonica |
| + |
Leaf blade elliptic, 7-8(-11) cm, margin revolute, basal 1/2 entire, and apical 1/2 serrulate, apex caudate-acuminate and with an obtuse tip; style ca. 2 mm. |
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48 E. rengechiensis |
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| 11 (9) |
Current year branchlets and terminal buds glabrous; leaf blade elliptic, oblong-elliptic, or obovate-oblong. |
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46 E. nitida |
| + |
Current year branchlets and terminal buds pubescent or glabrous; leaf blade obovate, obovate-elliptic, or oblong-lanceolate |
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(12) |
| |
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| 12 (11) |
Style 1.5-2 mm, apically 3-lobed; pedicel ca. 2 mm, glabrous. |
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44 E. chinensis |
| + |
Style less than 0.4 mm, 4-parted almost to base; pedicel 1-2 mm, hirsute. |
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45 E. taitungensis |
| |
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| 13 (2) |
Sepals orbicular or ovate-orbicular, glabrous; current year branchlets almost glabrous |
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(14) |
| + |
Sepals ovate to ovate-orbicular, pubescent to puberulent; current year branchlets pubescent |
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(16) |
| |
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| 14 (13) |
Style 3-5-lobed; fruit ovoid; current year branchlets blackish brown. |
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41 E. prunifolia |
| + |
Style 3-parted; fruit globose; current year branchlets yellowish brown |
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(15) |
| |
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| 15 (14) |
Sepal margins glandular; stamens 18-20; style 3-4 mm; leaf blade margin densely serrulate. |
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42 E. hainanensis |
| + |
Sepals margins not glandular; stamens 16-18; style ca. 2 mm; leaf blade margin entire or apically with several serrations. |
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43 E. cuneata |
| |
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| 16 (13) |
Styles 5, distinct. |
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32 E. pentagyna |
| + |
Styles 3(-5), ± connate |
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(17) |
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| 17 (16) |
Leaf blade base rounded, obliquely cordate, or subauriculate |
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(18) |
| + |
Leaf blade base cuneate or obtuse |
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(20) |
| |
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| 18 (17) |
Style apically 5-parted. |
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38 E. quinquelocularis |
| + |
Style apically 3- or 4-parted |
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(19) |
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| 19 (18) |
Stamens 12-15; leaf blade base slightly cordate to obliquely cordate. |
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39 E. inaequalis |
| + |
Stamens ca. 15; leaf blade base obliquely cordate to subauriculate. |
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40 E. obliquifolia |
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| 20 (17) |
Stamens ca. 20; style 2-3 mm |
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(21) |
| + |
Stamens 10-15; style 1.5-3 mm |
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(22) |
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| 21 (20) |
Current year branchlets densely spreading villous; petiole ca. 1 mm, densely villous; petals 2.5-3.5 mm. |
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33 E. groffii |
| + |
Current year branchlets densely pubescent; petiole 3-6 mm, pubescent; petals 3.5-4 mm. |
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34 E. acuminata |
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| 22 (20) |
Style ca. 1 mm. |
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35 E. acuminoides |
| + |
Style 2-3 mm |
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(23) |
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| 23 (22) |
Current year branchlets terete; terminal buds puberulent. |
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36 E. loquaiana |
| + |
Current year branchlets 2-ribbed; terminal buds sparsely pubescent |
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37 E. tsingpienensis |
| |
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| 24 (1) |
Sepals rigidly leathery, brown |
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(25) |
| + |
Sepals membranous or submembranous, pale green or yellowish green when dry |
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(32) |
| |
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| 25 (24) |
Styles distinct |
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(26) |
| + |
Style 3-lobed |
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(27) |
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| 26 (25) |
Current year branchlets terete; leaf blade margin apical 1/2 sparsely obtusely serrate; stamens 17-24; styles 1.5-2 mm. |
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55 E. macartneyi |
| + |
Current year branchlets 2-ribbed; leaf blade margin densely serrulate; stamens 13-15; styles ca. 1 mm. |
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56 E. oblonga |
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| 27 (25) |
Current year branchlets and terminal buds densely spreading villous |
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(28) |
| + |
Current year branchlets and terminal buds glabrous |
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(29) |
| |
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| 28 (27) |
Leaf blade base cuneate to cordate, abaxially black glandular punctate. |
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61 E. glandulosa |
| + |
Leaf blade base auriculate-amplexicaul, abaxially not glandular punctate. |
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62 E. weissiae |
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| 29 (27) |
Leaf blade base cuneate, rounded, or slightly cordate |
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(30) |
| + |
Leaf blade base auriculate-amplexicaul |
|
(31) |
| |
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| 30 (29) |
Current year branchlets terete; stamens 11 or 12. |
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57 E. ovatifolia |
| + |
Current year branchlets 2-ribbed; stamens ca. 15. |
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58 E. rubiginosa |
| |
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| 31 (29) |
Current year branchlets stout, 2-ribbed; leaf blade thickly leathery, abaxially reddish brown when dry; sepals pubescent. |
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59 E. amplexifolia |
| + |
Current year branchlets slender, terete; leaf blade thinly leathery, abaxially pale green; sepals glabrous. |
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60 E. lunglingensis |
| |
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| 32 (24) |
Stamens 5-8 |
|
(33) |
| + |
Stamens (8-)10-15(or 16) |
|
(42) |
| |
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| 33 (32) |
Current year branchlets terete, densely pubescent |
|
(34) |
| + |
Current year branchlets 2-ribbed (rarely terete in E. crassilimba), glabrous |
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(38) |
| |
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| 34 (33) |
Fruit ovoid; sepal margins glandular; leaf blade obovate to obovate-spatulate, apex obtuse to rounded. |
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78 E. pyracanthifolia |
| + |
Fruit globose; sepal margins not glandular; leaf blade not obovate to obovate-spatulate (may be obovate-oblong in E. crenatifolia), apex acute to acuminate (sometimes obtuse in E. wenshanensis) |
|
(35) |
| |
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| 35 (34) |
Sepals pubescent |
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(36) |
| + |
Sepals glabrous |
|
(37) |
| |
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| 36 (35) |
Sepal margins ciliolate; leaf blade 2-6 cm, secondary veins 9-11 on each side of midvein; pedicel 1-2 mm; sepals orbicular. |
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74 E. yunnanensis |
| + |
Sepal margins not ciliolate; leaf blade 1.5-2.7 cm, secondary veins 6-8 on each side of midvein; pedicel 2-3 mm; sepals ovate to broadly elliptic. |
|
75 E. wenshanensis |
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| 37 (35) |
Leaf blade lanceolate, 2.5-3.5 cm, thinly leathery; stamens 7 or 8. |
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76 E. leptophylla |
| + |
Leaf blade elliptic to obovate-oblong, 1-2.5 cm, leathery; stamens ca. 5. |
|
77 E. crenatifolia |
| |
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|
|
| 38 (33) |
Fruit long ellipsoid, to 13 mm; sepals ovate to long ovate, outside pubescent or glabrescent. |
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83 E. chuekiangensis |
| + |
Fruit globose, 3-4 mm; sepals orbicular, outside glabrous |
|
(39) |
| |
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|
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| 39 (38) |
Sepal margins not glandular |
|
(40) |
| + |
Sepal margins glandular |
|
(41) |
| |
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|
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| 40 (39) |
Style 3-parted; sepal margins not ciliolate; leaf blade thickly leathery, secondary veins adaxially impressed. |
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79 E. saxicola |
| + |
Style 2-parted; sepals margins ciliolate; leaf blade thinly leathery, secondary veins adaxially obscure. |
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80 E. marlipoensis |
| |
|
|
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| 41 (39) |
Current year branchlets terete; leaf blade oblong, 9-12 cm, base rounded, apex acute. |
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81 E. crassilimba |
| + |
Current year branchlets 2-ribbed; leaf blade narrowly elliptic to suboblong, 3-7 cm, base cuneate, apex slightly obtuse. |
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82 E. cavinervis |
| |
|
|
|
| 42 (32) |
Styles 3 and distinct or 3- or 4-parted to base |
|
(43) |
| + |
Style 3-lobed |
|
(46) |
| |
|
|
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| 43 (42) |
Stamens 8-10. |
|
66 E. fangii |
| + |
Stamens 11-16 (ca. 10 in E. obtusifolia and 10-16 in E. semiserrulata) |
|
(44) |
| |
|
|
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| 44 (43) |
Current year branchlets terete; terminal buds pubescent; sepals outside pubescent. |
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63 E. handel-mazzettii |
| + |
Current year branchlets 2- or 4-ribbed; terminal buds glabrous; sepals outside glabrous |
|
(45) |
| |
|
|
|
| 45 (44) |
Current year branchlets 2-ribbed; sepal margins ciliolate. |
|
64 E. brevistyla |
| + |
Current year branchlets 4-ribbed; sepal margins not ciliolate. |
|
65 E. paratetragonoclada |
| |
|
|
|
| 46 (42) |
Terminal bud and petiole glabrous. |
|
72 E. alata |
| + |
Terminal bud and petiole pubescent |
|
(47) |
| |
|
|
|
| 47 (46) |
Leaf blade 14-20 × 4-6 cm, margin with teeth 1.5-2 mm. |
|
70 E. perserrata |
| + |
Leaf blade 2-10 × 1-3.5 mm, margin serrulate or basally entire and with teeth less than 1.5 mm |
|
(48) |
| |
|
|
|
| 48 (47) |
Leaf blade apex obtuse; sepal margin not ciliolate or glandular. |
|
73 E. obtusifolia |
| + |
Leaf blade apex acute or acuminate |
|
(49) |
| |
|
|
|
| 49 (48) |
Pedicel 2-4 mm; sepals 2.5-3 mm. |
|
71 E. hebeclados |
| + |
Pedicel 1-2 mm; sepals 1.5-2 mm |
|
(50) |
| |
|
|
|
| 50 (49) |
Leaf blade secondary veins 6-8 on each side of midvein; sepals outside glabrous. |
|
69 E. semiserrulata |
| + |
Leaf blade secondary veins 10-20 on each side of midvein; sepals outside pubescent |
|
(51) |
| |
|
|
|
| 51 (50) |
Petiole 2-3 mm; leaf blade 4-10 cm; sepal margins glandular and sometimes also ciliolate; style ca. 1.5 mm, apically 3-parted. |
|
67 E. tsaii |
| + |
Petiole 1.5-2 mm; leaf blade 2-8.5 cm; sepal margins ciliolate but not glandular; style ca. 1 mm, 3-parted to base. |
|
68 E. taronensis |
