Illustration of corona types observed in southern Asian Vincetoxicum. The dark coloured shapes show corona lobes A Vincetoxicum arnottianum from S.A. Shah & B. Ali SAS-4 (RAW) B V. cabulicum from W. Koelz 11764 (US) C V. cardiostephanum from S.A. Shah, M. Turi et al. SAS-40 (RAW) D V. glaucum from W. Dudeeon & L. A. Kenoyer 56 (MO) E V. kenouriense from S.A. Shah & L. Ahmad SAS-37 (RAW) F V. lenifolium from S.A. Shah SAS-44 (RAW) G V. luridum from S.A. Shah & I. Ahmad SAS-23 (RAW) H A variable specimen of V. lenifolium from N. Ali 1029 (RAW) I V. sakesarense from I. Ahmad 27821 (RAW) J V. stewartianum from R.R. Stewart 16709 (RAW) K V. stocksii from J.F. Duthie 18918 (RAW) L V. subcanescens from S.A. Shah & A. Ullah SAS-8 (RAW). Drawing by M. Saleem and S.A. Shah.