Chosenia

Zhan, Zhenfeng, Shang, Ce, Shao, Longzhu, Luo, Yike, Zheng, Baojiang & Zhang, Yue, 2025, Salix zhixiangiana (Salicaceae), a new species from Northeast China, Phytotaxa 701 (2), pp. 199-206 : 204-205

Key to the species of sect. Chosenia and sect. Urbanianae

1. Flower nectary absent; stamens 5; infructescence slanting; stipules obliquely ovoid or obliquely lanceolate, 1–2 mm long, or stipule absent (sect. Chosenia ) ...........................................................................................................................................................2

- Flower nectary present; stamens 4–8; infructescence pendulous; stipules reniform to slightly circular, 4–12 mm long (sect. Urbanianae) .......................................................................................................................................................................................3 2. Bark longitudinal cracking; leaf blade ovate; stipules obliquely ovoid or obliquely lanceolate, 1–2 mm long ......... S. zhixiangiana

- Bark peeling in a paper-like strip; leaf blade oblong-lanceolate; stipule absent ............................................................. S. arbutifolia

3. Abaxial leaf surface and ovary hairy............................................................................................................................... S. urbaniana

- Abaxial leaf surface and ovary glabrous ............................................................................................................................................4

4. Leaf blade ovate, leaf base generally heart-shaped..................................................................................................... S. cardiophylla

- Leaf blade narrowly ovate, leaf base generally rounded............................................................................................ S. maximowiczii