1 |
Leaves evergreen, entire |
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(2) |
+ |
Leaves deciduous, 3-11-lobed |
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(10) |
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2 (1) |
Inflorescence corymbose-paniculate. |
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38 A. laevigatum |
+ |
Inflorescence only corymbose |
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(3) |
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3 (2) |
Leaf blade abaxially light green |
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(4) |
+ |
Leaf blade abaxially white mealy, gray |
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(7) |
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4 (3) |
Petioles pubescent. |
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43 A. pubipetiolatum |
+ |
Petioles glabrous |
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(5) |
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5 (4) |
Leaf blade lanceolate. |
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44 A. fabri |
+ |
Leaf blade oblong |
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(6) |
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6 (5) |
Leaves leathery, petiole 2-4 cm; samara 4-4.2 cm. |
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45 A. kwangnanense |
+ |
Leaves papery, petiole 1-1.5 cm; samara 2.5-2.8 cm. |
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46 A. oligocarpum |
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7 (3) |
Leaf blade lanceolate, lateral veins 13-15 pairs; samara 2.2-2.4 cm. |
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39 A. wangchii |
+ |
Leaf blade elliptic to oblong, lateral veins no more than 10 pairs; samara 2.8-3.2 cm |
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(8) |
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8 (7) |
Leaves papery; samara pubescent when immature. |
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42 A. hilaense |
+ |
Leaves leathery or thickly leathery; samara glabrous |
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(9) |
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9 (8) |
Leaf blade 8-14 × 3.5-6 cm, thickly leathery, lateral veins 8-10 pairs. |
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40 A. crassum |
+ |
Leaf blade 6-9 × 2-4 cm, leathery, lateral veins 5-7 pairs. |
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41 A. sino-oblongum |
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10 (1) |
Inflorescence corymbose; nutlet strongly veined |
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(11) |
+ |
Inflorescence paniculate; nutlet usually not obviously veined |
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(20) |
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11 (10) |
Leaves usually 3- or 5-lobed |
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(12) |
+ |
Leaves usually 7-13-lobed |
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(15) |
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12 (11) |
Leaves 3-lobed. |
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37 A. calcaratum |
+ |
Leaves 5-lobed |
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(13) |
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13 (12) |
Petiole, pedicel, and ovary pubescent; leaf small (4.5-5.5 × 2.5-7.5 cm) and petiole short (2-4 cm), petiole and leaves villous. |
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17 A. pauciflorum |
+ |
Petiole, pedicel, and ovary glabrous; leaf large (5-8 × 5-9 cm) and petiole long (3-6 cm), leaves glabrous |
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(14) |
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14 (13) |
Leaf blade 5-8 × 5-9 cm and petiole to 6 cm, relatively less flowered. |
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18 A. oliverianum |
+ |
Leaf blade to 12 × 4.5-16.5 cm and petiole to 7.5 cm, relatively more flowered. |
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19 A. serrulatum |
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15 (11) |
Leaves usually 7- or 9-lobed |
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(16) |
+ |
Leaves 9-, 11-, or 13-lobed |
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(18) |
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16 (15) |
Petiole and peduncle usually pubescent when young, ovary villous. |
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16 A. duplicatoserratum |
+ |
Petiole, peduncle, and ovary glabrous |
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(17) |
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17 (16) |
Both surfaces of leaves glabrous; nutlet including wing 2-2.5 cm. |
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20 A. palmatum |
+ |
Leaves abaxially pubescent; nutlet including wing 2.6-4 cm. |
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21 A. ceriferum |
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18 (15) |
Leaf blade 9-12 cm in diam.. |
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13 A. japonicum |
+ |
Leaf blade 5-10 cm in diam |
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(19) |
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19 (18) |
Leaf blade 6-10 cm in diam., usually 9-, 11-, or 13-lobed, both surfaces white tomentose; ovary white tomentose; branchlets not white mealy. |
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14 A. pseudosieboldianum |
+ |
Leaf blade 5-6 cm in diam., usually 9-lobed, rarely 7- or 8-lobed, glabrous except tomentose at vein axils; ovary yellowish rough hairy; branchlets white mealy. |
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15 A. linganense |
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20 (10) |
Leaves subleathery, 3-lobed at middle, lobes triangular, margin entire or undulate |
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(21) |
+ |
Leaves papery, deeply 3-, 5-, or 7-lobed, lobes ovate or lanceolate, margin serrate or serrulate, rarely entire or undulate |
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(22) |
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21 (20) |
Young branchlets, leaves abaxially, nutlets, and pedicels glabrous; samara wing including nutlet 2.5-2.8 cm, wings spreading horizontally. |
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35 A. tonkinense |
+ |
Young branchlets, leaves abaxially, nutlets, and pedicels gray-yellow tomentose; samara wing including nutlet 3.5-3.8 cm, wings spreading obtusely. |
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36 A. fenzelianum |
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22 (20) |
Inflorescence paniculate-corymbose |
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(23) |
+ |
Inflorescence paniculate |
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(24) |
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23 (22) |
Leaves 5-lobed. |
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22 A. chingii |
+ |
Leaves 3-lobed. |
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23 A. confertifolium |
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24 (22) |
Leaves 3(or 5)-lobed |
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(25) |
+ |
Leaves 5- or 7-lobed |
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(26) |
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25 (24) |
Inflorescence long paniculate with more flowers; leaf blade membranous or subleathery, 3- or 5-lobed, lobes oblong or lanceolate, apex acuminate, margin entire or apex crenulate; inflorescence 5-6 cm; disk glabrous; ovary pilose; samara wing including nutlet 2.5-3 cm. |
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24 A. wilsonii |
+ |
Inflorescence shortly paniculate with less flowers; leaf blade papery, 3-lobed, lobes ovate or oblong-ovate, apex acute or oblong-acute, margin serrate; inflorescence 3-4 cm; disk pubescent; ovary pubescent; samara wing including nutlet 2-5 cm. |
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25 A. tutcheri |
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26 (24) |
Leaves subleathery |
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(27) |
+ |
Leaves papery |
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(28) |
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27 (26) |
Leaves 5-lobed, rarely 7-lobed; nutlet ellipsoid, wings not recurved; sepals light green. |
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29 A. sinense |
+ |
Leaves 7-lobed, rarely 5-lobed; nutlets globose, wings recurved in upper part; sepals purple. |
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30 A. kuomeii |
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28 (26) |
Nutlets strongly veined, pubescent. |
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26 A. erianthum |
+ |
Nutlets not veined or not obviously veined, glabrous |
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(29) |
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29 (28) |
Ovary and disk glabrous. |
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27 A. flabellatum |
+ |
Ovary hairy, disk hairy or glabrous |
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(30) |
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30 (29) |
Disk hairy; leaves abaxially pubescent when immature. |
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28 A. campbellii |
+ |
Disk glabrous; leaves glabrous or pilose |
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(31) |
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31 (30) |
Leaves and petiole glabrous. |
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31 A. elegantulum |
+ |
Leaf veins abaxially pilose, petiole pilose |
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(32) |
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32 (31) |
Samara 2.5-2.7 cm, spreading nearly horizontally; leaves 3- or 5-lobed. |
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34 A. miaoshanicum |
+ |
Samara 2.3-2.5 cm, usually spreading at obtuse angle; leaves 5-lobed |
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(33) |
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33 (32) |
Leaf blade 10-12 × 11-14 cm, margin of lobe obtusely serrate; ovary, abaxial veins, and petiole velutinous. |
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32 A. pubinerve |
+ |
Leaf blade 5-8 × 7-11 cm, margin of lobe acutely serrate; ovary, abaxial veins, and petiole villous. |
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33 A. kweilinense |
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