| 1 |
Ovary and fruit 4- or 5-loculed |
|
(2) |
| + |
Ovary 2- or 3-loculed; fruit usually 1-loculed |
|
(3) |
| |
|
|
|
| 2 (1) |
Branchlets hairy; lateral veins of leaves 10-13 per side. |
|
1 E. angustifolius |
| + |
Branchlets glabrous; lateral veins of leaves 6-9 per side. |
|
2 E. hayatae |
| |
|
|
|
| 3 (1) |
Anthers awned at apices; exocarp shiny |
|
(4) |
| + |
Anthers not awned at apices; exocarp shiny or not, obscure |
|
(13) |
| |
|
|
|
| 4 (3) |
Leaf blade narrowly lanceolate; fruit spindle-shaped. |
|
3 E. hainanensis |
| + |
Leaf blade not narrowly lanceolate; fruit globose or ellipsoid |
|
(5) |
| |
|
|
|
| 5 (4) |
Fruit more than 2 cm in diam., pubescent. |
|
4 E. rugosus |
| + |
Fruit less than 2 cm in diam., glabrous |
|
(6) |
| |
|
|
|
| 6 (5) |
Leaf blade oblong or elliptic; branchlets glabrous |
|
(7) |
| + |
Leaf blade narrowly obovate or lanceolate; branchlets pubescent |
|
(10) |
| |
|
|
|
| 7 (6) |
Lateral veins of leaves (10-)12-14 per side. |
|
5 E. varunua |
| + |
Lateral veins of leaves (5-)7-10 per side |
|
(8) |
| |
|
|
|
| 8 (7) |
Ovary and disk glabrous. |
|
6 E. petiolatus |
| + |
Ovary densely tomentose or slightly villous, disk villous |
|
(9) |
| |
|
|
|
| 9 (8) |
Pedicel glabrous or slightly pilose; both surfaces of petals villous, segments 8-10. |
|
8 E. prunifolioides |
| + |
Pedicel densely puberulent; petals adaxially villous at base, 3-dentate. |
|
12 E. multiflorus |
| |
|
|
|
| 10 (6) |
Leaf blade glandular in axils of lateral and tertiary veins; petals adaxially glabrous. |
|
7 E. subpetiolatus |
| + |
Leaf blade not glandular; petals adaxially pubescent |
|
(11) |
| |
|
|
|
| 11 (10) |
Petal segments 17-20; leaf blade oblanceolate. |
|
10 E. laoticus |
| + |
Petal segments 6-12; leaf blade oblong or lanceolate |
|
(12) |
| |
|
|
|
| 12 (11) |
Leaf blade 4-8 cm, veinlets adaxially prominently raised; ovary 3-loculed. |
|
11 E. dubius |
| + |
Leaf blade 12-15 cm, veinlets adaxially slightly raised; ovary 2-loculed. |
|
9 E. bachmaensis |
| |
|
|
|
| 13 (3) |
Flowers polygamous; petals incised or entire, not laciniate; exocarp shiny |
|
(14) |
| + |
Flowers bisexual; petals laciniate; exocarp inconspicuous |
|
(22) |
| |
|
|
|
| 14 (13) |
Leaf blade lanceolate or narrowly oblong, rarely ovate-lanceolate or ovate-oblong |
|
(15) |
| + |
Leaf blade elliptic, ovate, obovate, or oblanceolate |
|
(18) |
| |
|
|
|
| 15 (14) |
Leaf blade abaxially pubescent. |
|
38 E. brachystachyus |
| + |
Leaf blade abaxially glabrous |
|
(16) |
| |
|
|
|
| 16 (15) |
Branchlets glabrous; leaf blade leathery, veinlets adaxially prominent. |
|
39 E. decandrus |
| + |
Branchlets pubescent; leaf blade papery, veinlets adaxially inconspicuous |
|
(17) |
| |
|
|
|
| 17 (16) |
Leaf blade 3-6 cm wide, lateral veins (6-)8 per side, petiole 2-6 cm. |
|
35 E. japonicus |
| + |
Leaf blade 2-3 cm wide, lateral veins 4-6 per side, petiole 1.5-2 cm. |
|
37 E. chinensis |
| |
|
|
|
| 18 (14) |
Branchlets glabrous or minutely pubescent, old leaves glabrous. |
|
35 E. japonicus |
| + |
Branchlets and leaves at least on midvein tomentose |
|
(19) |
| |
|
|
|
| 19 (18) |
Leaf blade golden pubescent. |
|
36 E. auricomus |
| + |
Leaf blade yellow-brown or silvery-gray pubescent |
|
(20) |
| |
|
|
|
| 20 (19) |
Lateral veins of leaves 8-12 per side, petiole 3-5.5 cm; ovary glabrous. |
|
32 E. gymnogynus |
| + |
Lateral veins of leaves 6-9 per side, petiole 1.5-4 cm; ovary at least on upper part pubescent |
|
(21) |
| |
|
|
|
| 21 (20) |
Branchlets and leaf blades abaxially black punctate, lateral veins 8 or 9 per side. |
|
33 E. atropunctatus |
| + |
Branchlets and young leaves abaxially not black punctate, lateral veins 6-8 per side. |
|
34 E. nitentifolius |
| |
|
|
|
| 22 (13) |
Fruit less than 1.5 cm in diam |
|
(23) |
| + |
Fruit more than 1.5 cm in diam |
|
(26) |
| |
|
|
|
| 23 (22) |
Branchlets glabrous, brown when dried; petals glabrous or abaxially sericeous |
|
(24) |
| + |
Branchlets sparsely pilose, pale; petals pubescent at least along margin |
|
(25) |
| |
|
|
|
| 24 (23) |
Petiole nearly absent or to 4(-10) mm; peduncle and petals glabrous. |
|
15 E. glabripetalus |
| + |
Petiole 1.5-2 cm; peduncle densely pubescent; petals abaxially sericeous. |
|
16 E. argenteus |
| |
|
|
|
| 25 (23) |
Leaf blade obovate, lateral veins 4 or 5 per side, petiole not shorter than 1 cm; petal segments 10-12. |
|
14 E. sylvestris |
| + |
Leaf blade lanceolate, lateral veins 6-10 per side, petiole ca. 0.5 cm; petal segments 7. |
|
13 E. poilanei |
| |
|
|
|
| 26 (22) |
Branchlets glabrous or pilose only |
|
(27) |
| + |
Branchlets densely tomentose |
|
(33) |
| |
|
|
|
| 27 (26) |
Leaf blade attenuate to base from middle |
|
(28) |
| + |
Leaf blade not attenuate, base cuneate to rounded |
|
(29) |
| |
|
|
|
| 28 (27) |
Endocarp inconspicuously verrucose; leaf blade not less than 5.5 cm wide, petiole 2-4.5 cm, prominently swollen at upper end. |
|
17 E. sikkimensis |
| + |
Endocarp prominently verrucose; leaf blade to 4 cm wide, petiole to 2 cm, not swollen at upper end. |
|
28 E. decipiens |
| |
|
|
|
| 29 (27) |
Leaf blade abaxially glandular, oblong-lanceolate. |
|
20 E. oblongilimbus |
| + |
Leaf blade abaxially eglandular, oblong, elliptic, oblanceolate, or lanceolate |
|
(30) |
| |
|
|
|
| 30 (29) |
Endocarp inconspicuously verrucose |
|
(31) |
| + |
Endocarp conspicuously verrucose |
|
(32) |
| |
|
|
|
| 31 (30) |
Leaf blade 13-21 × 7-9 cm, petiole not shorter than 2 cm. |
|
19 E. austroyunnanensis |
| + |
Leaf blade 6-12 × 2.5-4 cm, petiole not longer than 1 cm. |
|
15 E. glabripetalus |
| |
|
|
|
| 32 (30) |
Branchlets pilose; lateral veins of leaves 8-10 per side, veinlets dense. |
|
31 E. longlingensis |
| + |
Branchlets glabrous; lateral veins of leaves 7 or 8 per side, veinlets sparse. |
|
29 E. lanceifolius |
| |
|
|
|
| 33 (26) |
Leaf blade basally cuneate or attenuate from middle |
|
(34) |
| + |
Leaf blade basally rounded, acute, or cordate |
|
(37) |
| |
|
|
|
| 34 (33) |
Leaf blade narrowly lanceolate. |
|
27 E. duclouxii |
| + |
Leaf blade oblong, ovate, or obovate-lanceolate |
|
(35) |
| |
|
|
|
| 35 (34) |
Leaf blade obovate-lanceolate, attenuate to base from middle, lateral veins 6 or 7 per side. |
|
22 E. harmandii |
| + |
Leaf blade oblong or ovate-oblong, base cuneate or acute, lateral veins 7-10 per side |
|
(36) |
| |
|
|
|
| 36 (35) |
Petals glabrous or marginally ciliate, segments 14-18; stamens 15. |
|
30 E. limitaneoides |
| + |
Petals adaxially villous at base, segments 10-12; stamens 26-30. |
|
27 E. duclouxii |
| |
|
|
|
| 37 (33) |
Leaf blade basally cordate; branchlets with persistent bracts. |
|
21 E. balansae |
| + |
Leaf blade basally rounded or acute; branchlets without persistent bracts |
|
(38) |
| |
|
|
|
| 38 (37) |
Flowers with persistent reniform bracteoles. |
|
26 E. braceanus |
| + |
Flowers without persistent reniform bracteoles |
|
(39) |
| |
|
|
|
| 39 (38) |
Leaf blade abaxially with extremely dense silvery-gray appressed hairs. |
|
25 E. limitaneus |
| + |
Leaf blade abaxially brown or yellow pilose |
|
(40) |
| |
|
|
|
| 40 (39) |
Endocarp smooth. |
|
18 E. sphaerocarpus |
| + |
Endocarp verrucose or lacunose |
|
(41) |
| |
|
|
|
| 41 (40) |
Leaf blade basally rounded, lateral veins 10-13 per side. |
|
24 E. howii |
| + |
Leaf blade basally cuneate or obtuse, lateral veins 7 or 8 per side. |
|
23 E. lacunosus |
