trachelospermum

[Sommer]

genus of Asiatic woody vines with milky sap in leaves and stems

[diannvq4]

Trachelospermum is a genus of about 15 species of evergreen woody vines in the dogbane family Apocynaceae. All species are native to southern and eastern Asia except for T. difforme, which can be found in southeastern North America.
They have long stems climbing to 12 m or more high in trees. The leaves are opposite, simple broad lanceolate to ovate, 2–8 cm long and 0.5–4 cm broad. The flowers are salverform, simple, 2.5–7 cm broad, with five white, pale yellow or purple petals joined together at the base to form a tube.
The generic name Trachelospermum comes from the Greek, literally meaning neck seed, and referring to the seed shape.