Trianaea is a genus of the plant family Solanaceae,one of only two genera comprising the tribe Solandreae the other being Solandra.
It occurs from Colombia southwards to Ecuador and contains the following species (but this list may be incomplete):
Solandra is a genus of flowering plants in the nightshade family, Solanaceae.
 It is named after the Swedish naturalist Daniel C. Solander.
Widdringtonia is a genus of coniferous trees in the Cupressaceae (cypress family).
 The name was Austrian botanist Stephan Endlicher's way of honouring an early expert on the coniferous forests of Spain, Capt. Samuel Edward Cook or Widdrington (1787-1856).
 There are four species, all native to southern Africa, where they were known in the past as "cedars" (to which they are not related) but are now known as African cypresses.

Question: Are Widdringtonia and Solandra in the same family?
Answer: no