Cyanostegia angustifolia is a species endemic to Southwest Australia. We saw it frequently along roads of the dryer inland. The terminal floral clusters appear mauve to pale blue, but this coloration is from the large calyces (flower base or cup). The actual flower is the smaller dark purple, five lobed corolla (left and right flower) that sits just above the calyx on a short tube and will promptly drop at maturity (lower centre). Presumably the soon deciduous corolla attracts pollinating insects before they fall. The picture is a handheld in-camera focus stack from 8 photos. florabase.dbca.wa.gov.au/browse/profile/6747
