| 1 |
Ovary pruinose |
|
94 Salix austrotibetica |
| + |
Ovary not pruinose. |
|
(2) |
| |
|
|
|
| 2 (1) |
Ovary sessile or subsessile. |
|
(3) |
| + |
Ovary distinctly shortly stipitate (sometimes subsessile in S.delavayana and S. ochetophylla). |
|
(22) |
| |
|
|
|
| 3 (2) |
Ovary sessile. |
|
(4) |
| + |
Ovary subsessile. |
|
(15) |
| |
|
|
|
| 4 (3) |
Ovary pilose (only at base in S. tenella var. trichadenia) |
|
76 Salix pseudotangii |
| + |
Ovary glabrous. |
|
(5) |
| |
|
|
|
| 5 (4) |
Bracts pilose. |
|
(6) |
| + |
Bracts glabrous. |
|
(11) |
| |
|
|
|
| 6 (5) |
Bracts pilose at base only. |
|
(7) |
| + |
Bracts pilose or ciliate. |
|
(9) |
| |
|
|
|
| 7 (6) |
Bracts oblong; style 2-lobed; stigma 2-lobed |
|
81 Salix mictotricha |
| + |
Bracts obovate to orbicular; style short, entire. |
|
(8) |
| |
|
|
|
| 8 (7) |
Ovary ovoid; stigma 2-lobed |
|
63 Salix guebriantiana |
| + |
Ovary ovoid-ellipsoid; stigma capitate, entire |
|
69 Salix heishuiensis |
| |
|
|
|
| 9 (6) |
Bracts white villous on both surfaces |
|
66 Salix daguanensis |
| + |
Bracts villous only adaxially or marginally. |
|
(10) |
| |
|
|
|
| 10 (9) |
Bracts suborbicular; ovary ovoid; capsule conical |
|
67 Salix praticola |
| + |
Bracts obovate-oblong; ovary ellipsoid; capsule subglobose |
|
86 Salix cathayana |
| |
|
|
|
| 11 (5) |
Bracts broadly ovate. |
|
(12) |
| + |
Bracts not broadly ovate. |
|
(13) |
| |
|
|
|
| 12 (11) |
Adaxial gland terete |
|
84 Salix tangii |
| + |
Adaxial gland ovate or quadrangular |
|
82 Salix rhoophila |
| |
|
|
|
| 13 (11) |
Branchlets yellow or yellowish brown |
|
68 Salix dissa |
| + |
Branchlets neither yellow nor yellowish brown. |
|
(14) |
| |
|
|
|
| 14 (13) |
Branchlets dark brown or with a blackish tinge; catkin 2.5-6 cm; bracts broadly elliptic-oblong |
|
78 Salix wangiana |
| + |
Branchlets brownish red or purplish; catkin 1-2.5 cm; bracts obovate |
|
64 Salix tenella |
| |
|
|
|
| 15 (3) |
Bracts glabrous or slightly ciliate. |
|
(16) |
| + |
Bracts pilose. |
|
(18) |
| |
|
|
|
| 16 (15) |
Bracts obovate-oblong or obovate; ovary ovoid-oblong or narrowly ovoid |
|
77 Salix macroblasta |
| + |
Bracts broadly ovate or suborbicular; ovary ovoid. |
|
(17) |
| |
|
|
|
| 17 (16) |
Branches dark brown, not angled; catkin 2.5-5 cm; stigma entire |
|
75 Salix hypoleuca |
| + |
Branches black, angled; catkin 4-7 cm; stigma 2-lobed |
|
72 Salix longiflora |
| |
|
|
|
| 18 (15) |
Bracts subglabrous on both surfaces. |
|
(19) |
| + |
Bracts pilose on both surfaces. |
|
(20) |
| |
|
|
|
| 19 (18) |
Young branchlets pilose; young leaves dentate at margin |
|
88 Salix denticulata |
| + |
Young branchlets glabrous; young leaves entire at margin |
|
70 Salix zhegushanica |
| |
|
|
|
| 20 (18) |
Cilia 2-3 × as long as bracts |
|
80 Salix luctuosa |
| + |
Cilia nearly as long as bracts. |
|
(21) |
| |
|
|
|
| 21 (20) |
Peduncle ca. 3 mm |
|
87 Salix maerkangensis |
| + |
Peduncle ca. 20 mm |
|
83 Salix polyclona |
| |
|
|
|
| 22 (2) |
Bracts glabrous or adaxially pilose at middle or base. |
|
(23) |
| + |
Bracts pilose. |
|
(25) |
| |
|
|
|
| 23 (22) |
Bracts glabrous or abaxially pilose at base |
|
89 Salix parvidenticulata |
| + |
Bracts adaxially pilose at middle. |
|
(24) |
| |
|
|
|
| 24 (23) |
At least young leaves pilose abaxially; bracts glabrous; stipe glabrous |
|
65 Salix pseudowolohoensis |
| + |
Young leaves glabrous abaxially; bracts adaxially pilose at middle; stipe densely pubescent |
|
71 Salix zangica |
| |
|
|
|
| 25 (22) |
Bracts pilose on both surfaces. |
|
(26) |
| + |
Bracts pilose or glabrous on both surfaces, ciliate. |
|
(29) |
| |
|
|
|
| 26 (25) |
Petiole with 1-3 glands apically |
|
93 Salix minjiangensis |
| + |
Petiole non glandular. |
|
(27) |
| |
|
|
|
| 27 (26) |
Leaf blade orbicular or suborbicular |
|
91 Salix zhouquensis |
| + |
Leaf blade not orbicular. |
|
(28) |
| |
|
|
|
| 28 (27) |
Bracts ovate or oblong-ovate, apex obtuse |
|
92 Salix etosia |
| + |
Bracts elliptic, apex rounded |
|
85 Salix xizangensis |
| |
|
|
|
| 29 (25) |
Bracts with long hairs abaxially and at margin. |
|
(30) |
| + |
Bracts pubescent on both surfaces, margin ± ciliate. |
|
(31) |
| |
|
|
|
| 30 (29) |
Bracts yellowish green, obovate or suborbicular |
|
73 Salix paratetradenia |
| + |
Bracts brownish distally, ovate |
|
90 Salix ochetophylla |
| |
|
|
|
| 31 (29) |
Bracts orbicular, pilose on both surfaces , ciliate |
|
74 Salix oreinoma |
| + |
Bracts oblong-elliptic or long elliptic, brown distally, both surfaces pilose or glabrous, margin ± pilose. |
|
(32) |
| |
|
|
|
| 32 (31) |
Flowers with only adaxial gland present |
|
79 Salix delavayana |
| + |
Flowers with adaxial and abaxial glands present |
|
71 Salix zangica |
