Cynanchum viminale flowering can be a festive event when the many stems are erect at similar height without other plants for support or obscuring them. There are still many more non-flowering stems present, adapted to grow more shrub-like than as vines in this setting.
The branches show little green when growing in full sun in karoid conditions. They angle up in characteristic manner from the starting nodes where they are joined to lower stem parts. The photo was taken in the Kammanassie during April (Smith, et al, 2017; Vlok and Schutte-Vlok, 2015).