Pyracantha (Phipps, 1990)

Feng, Hui-Zhe, Wei, Su-Juan, Wang, Long-Yuan, Chen, Su-Fang, Fan, Qiang & Liao, Wen-Bo, 2021, A taxonomic revision of the Pyracantha crenulata complex (Rosaceae, Maleae), Phytotaxa 478 (2), pp. 239-252 : 240

Key to Pyracantha taxa from China

1a. Corymbs dense; pedicel 1–2 mm long; hypanthium abaxially densely tomentose............................................................................2

1b. Corymbs loose; pedicel 4–10 mm long; hypanthium abaxially glabrous or slightly pubescent ........................................................3

2a. Leaf apically acute, blade oblong to oblong-obovate; petiole 4–6(–9) mm long; branches usually unarmed..................... P. inermis

2b. Leaf apically obtuse or truncate, blade obovate to obovate-elliptic; petiole to 2 mm long; branches with short thorns ..................... .......................................................................................................................................................................................... P. densiflora

3a. Leaves abaxially densely tomentose ............................................................................................................................. P. angustifolia

3b. Leaves abaxially glabrous or pubescent .............................................................................................................................................4

4a. Leaf blade abaxially minutely pubescent ......................................................................................................................... P. koidzumii

4b. Leaf blade abaxially glabrous............................................................................................................................. P. crenulata complex