Cionura

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Gentianales

Familia: Apocynaceae
Subfamilia: Asclepiadoideae
Tribus: Marsdenieae
Genus: Cionura
Species: C. erecta
Name

Cionura Griseb., Spic. Fl. Rumel. 2: 69. 1844.

monotypic taxon

Distribution
Native distribution areas:

Europe
Southeastern Europe
Albania, Bulgaria, Greece, Kriti, Turkey-in-Europe, Yugoslavia.
Asia-Temperate
Western Asia
Afghanistan, Cyprus, East Aegean Islands, Iran, Iraq, Lebanon-Syria, Turkey.

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References

Grisebach, A.H.R. 1844–1846. Spicilegium Florae Rumelicae et Bithynicae Exhibens Synopsin Plantarum. Volumen secundum. Vieweg, Braunschweig. 548 pp. MDZ Reference page. 
Govaerts, R. et al. 2018. Cionura in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2018 Sept. 19. Reference page. 

Cionura is a genus of perennial plants found through the Mediterranean regions, the South and Eastern parts of the Balkan peninsula and Asia Minor to Afghanistan. It contains only one known species, Cionura erecta.[1]

The plants are woody-stemmed, either upright or twining with numerous herbaceous sprawling stems and poisonous milky sap. The leaves are bright green and broadly ovate, 7–12 centimetres (2+3⁄4–4+3⁄4 in) long and 4–8 centimetres (1+9⁄16–3+1⁄8 in) wide. Large clusters of delicate fragrant white flowers are borne terminally from April to June. The plants bear fruits 8 centimetres (3+1⁄8 in) long, with a papery flap. The seeds have a wide marginal wing all around with a terminal tuft of long white silky hairs. Because it is a poisonous plant, goats and sheep do not approach it.[2]
References

The Plant List
Flowers of Chania (Crete), Cionura erecta