Thalictrum angustialatum and its morphologically similar species, 1753

Zeng, You-Pai, Yuan, Qiong & Yang, Qin-Er, 2022, Raising Thalictrum uncatum var. angustialatum (Ranunculaceae) from China to T. angustialatum as an independent species based on evidence from morphology, geographical distribution, cytology and molecular systematics, Phytotaxa 572 (1), pp. 25-42 : 41

Key to Thalictrum angustialatum and its morphologically similar species

1. Stamens 7‒10 mm long; styles circinate at apex; stigmas wingless .................................................................................. T. uncatum

1. Stamens 5‒7 mm long; styles straight; stigmas narrowly winged ....................................................................................................2

2. Carpels 10‒15; achene stipes ca. 1 mm long............................................................................................................. T. angustialatum

2. Carpels 1‒8; achene stipes 1.8‒2.5 mm long .....................................................................................................................................3

3. Stipels marginally torn; persistent styles slightly curved at apex......................................................................... T. sinomacrostigma

3. Stipels marginally entire; persistent styles ventrally reflexed at base........................................................................... T. leuconotum