Strobilanthes spathulatibracteata, a new species of Acanthaceae from northern Vietnam

Strobilanthes spathulatibracteata is described as a new species from northern Vietnam. Morphologically, it resembles S. tonkinensis, but differs in its perennial undershrub habit, hirsute young stem, fragrant stem and blades, spathulate bracts and bracteoles with gland-tipped hirsute indumentum, 2-lipped calyx, 35-45 mm long corolla being puberulent outside and hir-sute inside, and apically pubescent fruits. Photographs, illustrations, information on its habitat, ecology, pollen morphology and a preliminary conservation assessment are provided.

Automated summary

Strobilanthes spathulatibracteata, a new species discovered in northern Vietnam, is morphologically similar to S. tonkinensis but differs in several characteristics. These include its perennial undershrub habit, hirsute young stem, fragrant stem and blades, spathulate bracts and bracteoles, 2-lipped calyx, puberulent outside and hir-sute inside corolla measuring 35-45 mm long, and apically pubescent fruits. The article provides photographs, illustrations, habitat information, ecological details, pollen morphology, and a preliminary conservation assessment.