Article from Bean's Trees and Shrubs Hardy in the British Isles
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'Muehlenbeckia' from the website Trees and Shrubs Online (treesandshrubsonline.
A genus of about fifteen species of shrubs or semi-woody climbers, chiefly Australasian, some South American. Leaves alternate, stalked; flowers small, greenish or whitish, of little or no ornament, the sexes sometimes on separate plants. Perianth deeply five-lobed, stamens eight; fruit a nutlet, three-angled, and enclosed in the perianth, which persists and sometimes becomes fleshy. The species are so variable that it is difficult to define their limits, but I believe there to be only two species commonly grown out-of-doors in this country, viz., M. axillaris and M. complexa.