| 1 |
Leaf margin dentate, sometimes entire in leaves in proximal 1/2 of branchlets. |
|
(2) |
| + |
Leaf margin entire, or glandular dentate only distally. |
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(8) |
| |
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| 2 (1) |
Leaf blade 3-5 cm, not lanceolate. |
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(3) |
| + |
Leaf blade 1-2.4 cm, rarely to 4 cm and then lanceolate. |
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(5) |
| |
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| 3 (2) |
Petiole 1/4-1/3 as long as leaf blade, red |
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145 Salix gilashanica |
| + |
Petiole less than 1/4 as long as leaf blade. |
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(4) |
| |
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| 4 (3) |
One-year-old branchlets purplish black |
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144 Salix pseudospissa |
| + |
One-year-old branchlets brown |
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143 Salix juparica |
| |
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| 5 (2) |
Leaves abaxially densely appressed dull red or rust-colored pubescent |
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130 Salix occidentalisinensis |
| + |
Leaves abaxially glabrous or sparsely gray villous. |
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(6) |
| |
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| 6 (5) |
Leaf blade elliptic-oblong or oblong, rarely lanceolate |
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134 Salix atopantha |
| + |
Leaf blade elliptic or obovate, rarely oblong. |
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(7) |
| |
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| 7 (6) |
One-year-old branchlets sparsely pilose |
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142 Salix rockii |
| + |
One-year-old branchlets densely villous |
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136 Salix qinlingica |
| |
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|
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| 8 (1) |
Leaves abaxially glabrous or pilose along veins. |
|
(9) |
| + |
Leaves abaxially pilose, at least at base. |
|
(16) |
| |
|
|
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| 9 (8) |
Petiole 1/4-1/3 as long as leaf blade. |
|
(10) |
| + |
Petiole 1/6-1/5 as long as leaf blade. |
|
(12) |
| |
|
|
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| 10 (9) |
Young branchlets glabrous |
|
127 Salix cupularis |
| + |
Young branchlets pilose. |
|
(11) |
| |
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|
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| 11 (10) |
Leaves usually 1-1.5(-2.4) cm |
|
132 Salix oritrepha |
| + |
Leaves usually 2-3 cm |
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135 Salix biondiana |
| |
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| 12 (9) |
Leaf blade obovate-oblong or obovate-elliptic, rarely elliptic, broadest above middle. |
|
(13) |
| + |
Leaf blade long elliptic or elliptic to suborbicular, broadest at middle. |
|
(14) |
| |
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|
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| 13 (12) |
Lateral veins (7-)10-13 on each side of midvein |
|
137 Salix muliensis |
| + |
Lateral veins usually less than 7 on each side of midvein |
|
131 Salix neoamnematchinensis |
| |
|
|
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| 14 (12) |
Leaves abaxially glaucous, glabrous |
|
129 Salix maizhokunggarensis |
| + |
Leaves abaxially ± pilose. |
|
(15) |
| |
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|
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| 15 (14) |
Leaves ± pilose abaxially |
|
141 Salix sclerophylla |
| + |
Leaves glabrous abaxially |
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147 Salix jinchuanica |
| |
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|
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| 16 (8) |
Leaves 4-6 cm. |
|
(17) |
| + |
Leaves less than 4 cm. |
|
(19) |
| |
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| 17 (16) |
Branchlets purplish red, tomentose when young |
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133 Salix gyamdaensis |
| + |
Branchlets blackish purple, pubescent when young. |
|
(18) |
| |
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| 18 (17) |
Nodes of branchlets raised; leaf blade long elliptic, apex obtuse or subrounded, abaxially densely shortly sericeous |
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146 Salix dalungensis |
| + |
Nodes of branchlets not raised; leaf blade long elliptic-lanceolate or long elliptic, apex acute or shortly acuminate, abaxially densely shortly woolly |
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138 Salix kongbanica |
| |
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|
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| 19 (16) |
Leaf blade elliptic or obovate to suborbicular; juvenile branchlets pruinose or tomentulose. |
|
(20) |
| + |
Leaf blade oblong, elliptic-oblong, or elliptic; juvenile branchlets neither pruinose nor tomentulose. |
|
(21) |
| |
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|
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| 20 (19) |
One- and 2-year-old branchlets usually pruinose |
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141 Salix sclerophylla |
| + |
One- and 2-year-old branchlets usually tomentulose |
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140 Salix wuxuhaiensis |
| |
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| 21 (19) |
Branchlets dull grayish purple, pilose |
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139 Salix sclerophylloides |
| + |
Branchlets purplish brown or dull brown, glabrous |
|
128 Salix taipaiensis |
