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Representative gynostemia of Amitostigma. (a) A. faberi (Clade N5); (b) A. hemipilioides (Clade N4); (c) A. wenshanense (Clade N3); (d) A. keiskeoides (Clade N3). Abbreviations: an, anther; au, auricle, together with basal bulge forming the lateral appendage; bur, bursicle; ro, rostellum; stg, stigma; vi, viscidium. Image credits: a–d, H. Jiang
