| 1 |
Leaves opposite (except rarely shoot leaves), glabrous |
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263 Salix koriyanagi |
| + |
Leaves alternate, pilose or glabrous. |
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(2) |
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| 2 (1) |
Leaves ca. 10 cm. |
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(3) |
| + |
Leaves usually less than 8 cm (except on shoots). |
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(10) |
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| 3 (2) |
Leaf margin entire or remotely dentate. |
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(4) |
| + |
Leaf margin conspicuously serrate. |
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(5) |
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| 4 (3) |
Leaf blade usually broader distally |
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260 Salix pycnostachya |
| + |
Leaf blade broadest at middle, attenuate toward ends |
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265 Salix tenuijulis |
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| 5 (3) |
Branchlets glabrous; petiole not inflated |
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265 Salix tenuijulis |
| + |
Branchlets ± tomentose; petiole inflated at base. |
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(6) |
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| 6 (5) |
Branchlets dark; young leaves abaxially densely tomentose |
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271 Salix suchowensis |
| + |
Branchlets yellowish; young leaves abaxially glabrous or pilose. |
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(7) |
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| 7 (6) |
Petiole 1-3(-5) mm |
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270 Salix sungkianica |
| + |
Petiole 8-12 mm |
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269 Salix linearistipularis |
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| 10 (2) |
Leaf blade more than 11 × as long as wide. |
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(11) |
| + |
Leaf blade 6-7(-8) × as long as wide. |
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(15) |
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| 11 (10) |
Leaf margin coarsely dentate. |
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(12) |
| + |
Leaf margin entire or shallowly dentate. |
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(13) |
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| 12 (11) |
Leaf apex long acuminate; stipules large, not caducous |
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272 Salix psammophila |
| + |
Leaf apex obtuse or shortly acuminate; stipules usually caducous |
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261 Salix gracilior |
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| 13 (11) |
Leaf uniformly colored adaxially and abaxially |
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267 Salix caspica |
| + |
Leaf 2-colored adaxially and abaxially. |
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(14) |
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| 14 (13) |
Leaf margin entire or shallowly dentate, not bony |
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264 Salix blakii |
| + |
Leaf margin remotely sharply dentate, bony |
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254 Salix michelsonii |
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| 15 (10) |
Branchlets black; shrubs dwarf, alpine |
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266 Salix lamashanensis |
| + |
Branchlets not black; shrubs or small trees. |
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(16) |
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| 16 (15) |
Leaf margin glandular dentate. |
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(17) |
| + |
Leaf margin entire, subentire, shallowly serrulate, or indistinctly loosely serrulate. |
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(18) |
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| 17 (16) |
Leaf blade lanceolate or oblanceolate |
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262 Salix yanbianica |
| + |
Leaf blade linear-lanceolate |
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268 Salix donggouxianica |
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| 18 (16) |
Leaf margin indistinctly loosely serrulate or subentire |
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257 Salix yumenensis |
| + |
Leaf margin entire or shallowly serrulate. |
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(19) |
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| 19 (18) |
Branchlets purplish brown |
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259 Salix kirilowiana |
| + |
Branchlets yellow or chestnut colored. |
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(20) |
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| 20 (19) |
Branchlets (pale) chestnut colored, often pruinose; trees not cultivated |
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255 Salix capusii |
| + |
Branchlets yellow; trees cultivated |
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258 Salix carmanica |
