Which of the following has trumpet-like flowers: Tecomanthe or Clethra?
Tecomanthe Tecomanthe is a genus of 5 species of tropical or subtropical forest lianes in the family Bignoniaceae. They have attractive trumpet-like flowers and glossy leaves. They are native to Australia, Indonesia, New Guinea, New Zealand, and the Solomon Islands.
Sphenostemon Sphenostemon is the genus of small evergreen trees or shrubs native to New Guinea, Queensland (Australia) and New Caledonia. They have opposite or spiral leaves, and at most small stipules. The small flowers, borne in terminal inflorescences, have free (i.e. unjoined) sepals and petals. The anthers have thick filaments. The fruit, a berry, is fleshy and contains two seeds. The genus is described as "particularly poorly known".