| 1 |
Ovary and capsule glabrous. |
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(2) |
| + |
Ovary and capsule pilose. |
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(8) |
| |
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| 2 (1) |
Bracts hairy. |
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(3) |
| + |
Bracts glabrous abaxially. |
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(4) |
| |
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| 3 (2) |
Bracts long sericeous abaxially |
|
256 Salix leveilleana |
| + |
Bracts villous only proximally and at margin |
|
257 Salix yumenensis |
| |
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| 4 (2) |
Bracts abaxially wrinkled, persistent |
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260 Salix pycnostachya |
| + |
Bracts not wrinkled, completely or partly caducous after anthesis. |
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(5) |
| |
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| 5 (4) |
Bracts brownish or blackish; leaf blade of fruiting branchlets 11-16 × as long as wide |
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254 Salix michelsonii |
| + |
Bracts pale; leaf blade of fruiting branchlets 5-10 × as long as wide. |
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(6) |
| |
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| 6 (5) |
Mature shoots dark; young leaves tender, abaxially silvery pubescent |
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259 Salix kirilowiana |
| + |
Mature shoots pale; leaves somewhat rigid, glabrous or sparsely pubescent. |
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(7) |
| |
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| 7 (6) |
Capsule conical, normally developed; branchlets chestnut-brown |
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255 Salix capusii |
| + |
Capsule linear-lanceolate; branchlets yellowish |
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258 Salix carmanica |
| |
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| 8 (1) |
Catkins opposite, rarely alternate, sessile; flowering precocious |
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263 Salix koriyanagi |
| + |
Catkins alternate; flowering nearly coetaneous. |
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(9) |
| |
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| 9 (8) |
Catkin pedunculate; leaflets on peduncle not deciduous (except sometimes in S. tenuijulis). |
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(10) |
| + |
Catkin sessile or shortly pedunculate; scalelike leaflets on peduncle readily deciduous. |
|
(15) |
| |
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|
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| 10 (9) |
Leaf blade of flowering branchlets linear, ± equally wide proximally and distally. |
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(11) |
| + |
Leaf blade of flowering branchlets usually broadest above middle. |
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(12) |
| |
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| 11 (10) |
Juvenile branchlets tomentose |
|
265 Salix tenuijulis |
| + |
Juvenile branchlets glabrous |
|
264 Salix blakii |
| |
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|
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| 12 (10) |
Margin of young leaves dentate. |
|
(13) |
| + |
Margin of young leaves nearly entire. |
|
(14) |
| |
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| 13 (12) |
Leaf blade 11-16 × as long as wide; bracts glabrous or pilose |
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261 Salix gracilior |
| + |
Leaf blade 6-7 × as long as wide; bracts white downy |
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262 Salix yanbianica |
| |
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|
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| 14 (12) |
Bracts abaxially wrinkled, persistent |
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260 Salix pycnostachya |
| + |
Bracts abaxially not wrinkled, caducous during fruiting |
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258 Salix carmanica |
| |
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|
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| 15 (9) |
Shrubs dwarf, alpine; branchlets blackened |
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266 Salix lamashanensis |
| + |
Shrubs of low mountains or plains; branchlets not blackened. |
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(16) |
| |
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| 16 (15) |
Style very short to absent. |
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(17) |
| + |
Style conspicuous to relatively large. |
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(19) |
| |
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| 17 (16) |
Bracts 2-colored; leaves coarsely serrate |
|
269 Salix linearistipularis |
| + |
Bracts uniformly colored; leaves entire or obtusely serrate. |
|
(18) |
| |
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|
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| 18 (17) |
Leaves entire |
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267 Salix caspica |
| + |
Leaves loosely obtusely serrate |
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268 Salix donggouxianica |
| |
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|
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| 19 (16) |
Catkin 4-6 cm × 5-8 mm; bracts densely gray tomentose, black distally |
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270 Salix sungkianica |
| + |
Catkin 1-4 cm × 3-5 mm; bracts uniformly colored or 2-colored. |
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(20) |
| |
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| 20 (19) |
Scalelike leaflets on peduncle abaxially glabrous or pilose; bracts uniformly colored; branchlets yellowish or purplish red; leaf blade lanceolate |
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271 Salix suchowensis |
| + |
Scalelike leaflets on peduncle abaxially densely villous; bracts 2-colored; branchlets yellowish; leaf blade linear |
|
272 Salix psammophila |
