''Pogostemon formosanus'' is a plant species in the family

Lamiaceae The Lamiaceae ( ) or Labiatae are a family of flowering plants commonly known as the mint, deadnettle or sage family. Many of the plants are aromatic in all parts and include widely used culinary herbs like basil, mint, rosemary, sage, savory ...

, first described in 1896. The species is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the island of Taiwan. ''Pogostemon formosanus'' are

herbs In general use, herbs are a widely distributed and widespread group of plants, excluding vegetables and other plants consumed for macronutrients, with savory or aromatic properties that are used for flavoring and garnishing food, for medicinal ...

or suffruticose plants, growing up to 1 m tall and covered with septate hairs; the stems are erect, round or square, and glabrous or sparsely and minutely hairy.Flora of China Vol. 17 Page 259 台湾刺蕊草 tai wan ci rui cao ''Pogostemon formosanus'' Oliver, Hooker's Icon. Pl. 25: t. 2440. 1896.
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References

formosanus Endemic flora of Taiwan Plants described in 1896 Taxa named by Daniel Oliver {{Lamiaceae-stub