1 |
Branchlets pendulous. |
|
(2) |
+ |
Branchlets erect or spreading, not pendulous (except sometimes in S. matsudana). |
|
(3) |
|
|
|
|
2 (1) |
Ovary glabrous or slightly pilose at base; bracts lanceolate |
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36 Salix babylonica |
+ |
Ovary downy proximally; bracts ovate |
|
37 Salix pseudolasiogyne |
|
|
|
|
3 (1) |
Ovary pilose. |
|
(4) |
+ |
Ovary glabrous or pilose at base. |
|
(11) |
|
|
|
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4 (3) |
Female flower with adaxial and abaxial glands. |
|
(5) |
+ |
Female flower with adaxial gland only. |
|
(7) |
|
|
|
|
5 (4) |
Branchlets yellowish gray or yellowish brown |
|
40 Salix eriocarpa |
+ |
Branchlets grayish brown, brown, or grayish chestnut colored. |
|
(6) |
|
|
|
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6 (5) |
Catkin subsessile; style slightly shorter than ovary; bracts ovate-oblong or ovate, apex acute or obtuse |
|
41 Salix koreensis |
+ |
Catkin pedunculate; style much shorter than ovary; bracts subrectangular, apex glandular dentate |
|
42 Salix qinghaiensis |
|
|
|
|
7 (4) |
Flowering catkin 2-3 mm thick |
|
44 Salix sphaeronymphe |
+ |
Flowering catkin less than 3 mm thick. |
|
(8) |
|
|
|
|
8 (7) |
Bracts obovate or obovate-orbicular; ovary broadly ovoid or subglobose |
|
46 Salix pierotii |
+ |
Bracts long ovate or oblong; ovary conical, cylindric-ovoid, ovoid, or narrowly ovoid. |
|
(9) |
|
|
|
|
9 (8) |
Catkin 2-2.5 cm; peduncle 0.8-1.5 cm |
|
45 Salix sericocarpa |
+ |
Catkin 1.5-2 cm; peduncle less than 0.8 cm. |
|
(10) |
|
|
|
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10 (9) |
Style 2-lobed; bracts long ovate, adaxially ciliate and with long hairs, abaxially with long hairs proximally |
|
47 Salix longistamina |
+ |
Style shallowly 2-lobed; bracts oblong, adaxially glabrous, abaxially with long hairs at base and margin |
|
43 Salix bangongensis |
|
|
|
|
11 (3) |
Young branchlets tomentose; young leaves silvery sericeous. |
|
(12) |
+ |
Young branchlets and leaves subglabrous or pilose, neither tomentose nor silvery sericeous. |
|
(13) |
|
|
|
|
12 (11) |
Catkin 3-4.5 cm, to 5.5 cm in fruit; ovary ovoid-conical, 4.5-5 mm; bracts lanceolate or ovate-lanceolate, both surfaces sericeous |
|
27 Salix alba |
+ |
Catkin 1.2-1.8 cm, to 4 cm in fruit; ovary ovoid, ca. 2 mm; bracts ovate, both surfaces glabrous, ciliate |
|
35 Salix chienii |
|
|
|
|
13 (11) |
Glands adaxial and abaxial. |
|
(14) |
+ |
Gland adaxial only (rarely abaxial gland also present). |
|
(17) |
|
|
|
|
14 (13) |
Ovary pilose at base |
|
31 Salix weixiensis |
+ |
Ovary glabrous. |
|
(15) |
|
|
|
|
15 (14) |
Catkin ca. 2 cm, less than 2.5 cm in fruit; bracts ovate, apex obtuse |
|
32 Salix matsudana |
+ |
Catkin (2.5-)3-4 cm; bracts deltoid-lanceolate, apex acute. |
|
(16) |
|
|
|
|
16 (15) |
Bracts adaxially with dense hairs, abaxially subglabrous |
|
29 Salix chikungensis |
+ |
Bracts downy on both surfaces |
|
30 Salix jishiensis |
|
|
|
|
17 (13) |
Gland very large and broad, nearly surrounding base of ovary |
|
33 Salix pingliensis |
+ |
Gland not large and broad. |
|
(18) |
|
|
|
|
18 (17) |
Peduncle with 2 or 3 normal leaflets; ovary pilose at base; bracts ovate-orbicular |
|
34 Salix sphaeronymphoides |
+ |
Peduncle without normal leaflets; ovary glabrous; bracts ovate to oblong. |
|
(19) |
|
|
|
|
19 (18) |
Peduncle 7-9 mm; bracts with long, yellow hairs on both surfaces; gland large and broad, usually sharply lobed |
|
39 Salix bikouensis |
+ |
Peduncle less than 5 mm; bracts without long, yellow hairs; gland narrow, apex entire. |
|
(20) |
|
|
|
|
20 (19) |
Ovary with stipe extremely short; style short but conspicuous, 2-lobed; catkin 0.8-1.2 cm |
|
26 Salix heteromera |
+ |
Ovary sessile; style short, entire at apex; catkin 1.5-1.8 cm |
|
38 Salix capitata |