| 1 |
Catkin more than 1.5 cm, shortly terete to terete. |
|
(2) |
| + |
Catkin less than 1.5 cm (sometimes to 2.3 cm in S. taipaiensis), ellipsoid or capitate. |
|
(8) |
| |
|
|
|
| 2 (1) |
Catkin more than 10 mm thick. |
|
(3) |
| + |
Catkin less than 8 mm thick. |
|
(4) |
| |
|
|
|
| 3 (2) |
Glands usually basally connate; young leaflets of peduncle elliptic; catkin ellipsoid |
|
132 Salix oritrepha |
| + |
Glands not basally connate; young leaflets of peduncle oblong; catkin shortly terete or terete |
|
145 Salix gilashanica |
| |
|
|
|
| 4 (2) |
Peduncle very short. |
|
(5) |
| + |
Peduncle more than 5 mm. |
|
(6) |
| |
|
|
|
| 5 (4) |
Adaxial gland narrowly oblong, 1/3-1/4 as long as bracts |
|
135 Salix biondiana |
| + |
Adaxial gland broadly ovate, ca. 1/5 as long as bracts |
|
136 Salix qinlingica |
| |
|
|
|
| 6 (4) |
Young leaves lanceolate |
|
134 Salix atopantha |
| + |
Young leaves elliptic or long elliptic. |
|
(7) |
| |
|
|
|
| 7 (6) |
Male flower with only an adaxial gland |
|
143 Salix juparica |
| + |
Male flower with adaxial and abaxial glands |
|
129 Salix maizhokunggarensis |
| |
|
|
|
| 8 (1) |
Filaments connate proximally; bracts ca. 5 mm |
|
144 Salix pseudospissa |
| + |
Filaments usually distinct; bracts less than 3 mm. |
|
(9) |
| |
|
|
|
| 9 (8) |
Glands usually basally connate, forming a multilobed false disc |
|
127 Salix cupularis |
| + |
Glands not basally connate, not forming a false disc. |
|
(10) |
| |
|
|
|
| 10 (9) |
Young branchlets glabrous |
|
128 Salix taipaiensis |
| + |
Young branchlets ± pilose. |
|
(11) |
| |
|
|
|
| 11 (10) |
Catkin either lacking leavlets at base with only 2 scalelike leaflets. |
|
(12) |
| + |
Catkin with leaflets at base. |
|
(13) |
| |
|
|
|
| 12 (11) |
Young leaves dentate at margin, rarely entire; catkin grayish white |
|
142 Salix rockii |
| + |
Young leaves entire at margin; catkin yellow or brownish yellow |
|
137 Salix muliensis |
| |
|
|
|
| 13 (11) |
Young leaves abaxially with densely appressed dull red or rust-colored hairs |
|
130 Salix occidentalisinensis |
| + |
Young leaves abaxially glabrous or with grayish white hair. |
|
(14) |
| |
|
|
|
| 14 (13) |
Leaf blade at anthesis elliptic or ovate; bracts abaxially pubescent, adaxially glabrous |
|
141 Salix sclerophylla |
| + |
Leaf blade at anthesis oblanceolate or long obovate-elliptic; bracts white pubescent on both surfaces |
|
131 Salix neoamnematchinensis |
