|
| 1 |
Flowering precocious; catkin sessile or subsessile or, if peduncle 1-2 cm, then leaflets absent. |
|
(2) |
| + |
Flowering coetaneous or slightly serotinous; peduncle more than 1 cm, with leaflets; young leaves moderately large at anthesis. |
|
(5) |
| |
|
|
|
| 2 (1) |
Catkin more than 1 cm thick. |
|
(3) |
| + |
Catkin less than 1 cm thick. |
|
(4) |
| |
|
|
|
| 3 (2) |
Bracts with long hairs only abaxially, submembranous, apex truncate, dentate, 3-veined |
|
164 Salix sikkimensis |
| + |
Bracts with long hairs on both surfaces, not submembranous, apex rounded, entire, with obscure veins |
|
157 Salix argyrophegga |
| |
|
|
|
| 4 (2) |
Style deeply lobed, ca. as long as ovary; young leaf blade obovate to obovate-oblong, rarely oblanceolate, abaxially comose along midvein |
|
155 Salix spodiophylla |
| + |
Style 2-lobed, ca. 1/2 as long as ovary; young leaf blade elliptic, rarely broadest above middle, abaxially tomentose |
|
156 Salix balfouriana |
| |
|
|
|
| 5 (1) |
Style ca. as long as ovary, lobed to at least middle, deeply lobed to completely divided. |
|
(6) |
| + |
Style 1/3-1/2 as long as ovary, completely divided to 2-cleft, rarely shallowly lobed. |
|
(13) |
| |
|
|
|
| 6 (5) |
Young leaf blade lanceolate. |
|
(7) |
| + |
Young leaf blade not lanceolate. |
|
(8) |
| |
|
|
|
| 7 (6) |
Catkin and leaves opposite |
|
158 Salix salwinensis |
| + |
Catkin and leaves alternate |
|
159 Salix psilostigma |
| |
|
|
|
| 8 (6) |
Style twisted; stigma filamentous. |
|
(9) |
| + |
Style not twisted; stigma not filamentous. |
|
(10) |
| |
|
|
|
| 9 (8) |
Stigma usually curled; flowering coetaneous; young leaf blade elliptic or narrowly elliptic, rarely obovate-oblong |
|
149 Salix ernestii |
| + |
Stigma not curled; flowering serotinous; young leaf blade obovate-oblong or narrowly obovate-elliptic, rarely elliptic |
|
154 Salix spathulifolia |
| |
|
|
|
| 10 (8) |
Leaf blade obovate or oblong-obovate; bracts obtuse-rounded at apex, not dentate |
|
167 Salix fengiana |
| + |
Leaf blade obovate-elliptic, narrowly elliptic, or narrowly ovate; bracts often truncate at apex, ± denticulate. |
|
(11) |
| |
|
|
|
| 11 (10) |
Style completely divided, divergent; stigma short, 2-lobed or not; catkin more than 1.3 cm thick |
|
166 Salix bistyla |
| + |
Style deeply lobed to shallowly lobed; stigma long, usually lobed; catkin less than 1 cm thick. |
|
(12) |
| |
|
|
|
| 12 (11) |
Style shallowly lobed; catkin 6-8 cm |
|
148 Salix fargesii |
| + |
Style deeply lobed; catkin less than 5.5 cm |
|
162 Salix divergentistyla |
| |
|
|
|
| 13 (5) |
Young leaf blade lanceolate to elliptic-oblong or narrowly elliptic, abaxially sericeous, shiny, margin often entire. |
|
(14) |
| + |
Young leaf blade ovate-lanceolate, elliptic to broadly elliptic, tomentose or villous abaxially, margin serrate or sinuous-crenate or, if leaf blade obovate-elliptic to obovate-lanceolate, then margin entire or inconspicuously remotely glandular dentate. |
|
(16) |
| |
|
|
|
| 14 (13) |
Catkin more than 7 cm; young leaf apex acuminate to acute |
|
153 Salix phaidima |
| + |
Catkin 3-6 cm; young leaf apex acute. |
|
(15) |
| |
|
|
|
| 15 (14) |
Style completely divided; bracts obovate-deltoid, white villous on both surfaces or only abaxially, margin entire, apex truncate to rounded-truncate; young leaf blade abaxially white sericeous, cuneate at base |
|
160 Salix daliensis |
| + |
Style 2-cleft, sometimes to more than 1/2 length of ovary; bracts spatulate-oblong, adaxially glabrous, margin sometimes crenate or with 2 nicked teeth, apex obtuse or subtruncate; young leaf blade abaxially lead gray sericeous, rounded at base |
|
163 Salix daltoniana |
| |
|
|
|
| 16 (13) |
Catkin long and slender, more than 6 cm, to more than 10 cm in fruit; mature leaves large, more than 7 cm, abaxially white tomentose. |
|
(17) |
| + |
Catkin 4-6 cm, to 10 cm in fruit; mature leaves less than 7(-9) cm, abaxially subglabrous. |
|
(18) |
| |
|
|
|
| 17 (16) |
Bracts with 3 or 4 conspicuous, glandular teeth at apex; young leaf blade entire or irregularly sinuolate-crenate at margin, oblong-elliptic to ovate-lanceolate and crenate in fruit |
|
152 Salix phanera |
| + |
Bracts entire at apex; young leaf blade gland-tipped or dentate only distally, elliptic to broadly elliptic and serrate in fruit |
|
157 Salix argyrophegga |
| |
|
|
|
| 18 (16) |
Ovary shortly stipitate |
|
165 Salix nujiangensis |
| + |
Ovary sessile. |
|
(19) |
| |
|
|
|
| 19 (18) |
Catkin ca. 5 cm; bracts ovate or oblong |
|
151 Salix plocotricha |
| + |
Catkin ca. 3.5 cm; bracts obovate |
|
150 Salix eriostachya |
|
