Strobilanthes
Strobilanthes is a genus of about 350 species of flowering plants in the family Acanthaceae, mostly native to tropical Asia and Madagascar, but with a few species extending north into temperate regions of Asia. Many species are cultivated for their two-lipped, hooded flowers in shades of blue, pink, white and purple. Most are frost-tender and require protection in frost-prone areas. Species. "Strobilanthes atropurpurea" is a temperate species, native to eastern Siberia; it is cultivated for its purple flowers. "Strobilanthes dyeriana" (Persian shield) is a tropical plant native to Myanmar. It is grown for its dark green  foliage with bright, metallic-purple stripes radiating outward from the central leaf vein. In proper conditions, it will also produce pale purple flowers. Persian Shield grows best outdoors in USDA zones 9 and 10, although it can survive in other zones as a houseplant given sufficient temperature, soil moisture and humidity. It has gained the Royal Horticultural Society's Award of Garden Merit. "Plants of the World Online" currently includes: Herbivory. "Strobilanthes" species are food plants for the larvae of some Lepidoptera species including "Endoclita malabaracus", which has been recorded on "S. callosa".