Calyx appendage variation of Lycianthes in Asia A L. biflora with 10 equal calyx appendages (Nuraliev s.n, Vietnam [no voucher]) B L. laevis with 5 calyx appendages (Mustaqim s.n., Indonesia; DOL207886) C L. parasitica with small, nub-like calyx appendages (Pelser & Barcelona s.n., Philippines; DOL84744) D L. oliveriana with thick, warty calyces with no appendages (Damas et al. SAJ-1050, Papua New Guinea) E L. schizocalyx with long flower pedicels and 10 unequal calyx appendages (Heyer s.n., Philippines; DOL151906) F L. shunningensis with 10 strongly reflexed calyx appendages (Averyanov 887, Laos). Photograph credits: A Maxim Nuraliev B Wendy Mustaqim C Pieter B. Pelser & Julie F. Barcelona D Shelley James E Philippe Heyer F Leonid Averyanov. DOL numbers are identifiers from PhytoImages (https://phytoimages.siu.edu). Details of collecting localities can be found in Suppl. material 2.