Scutellaria javanica is a large Scutellaria species which could reach up to 1 m tall and has relative large flowers among other Scutellaria species. In China, it is only distributed in Hainan which is a nationally uncommon species. It can also be found in Indonesia and Philippines, suggesting it is a tropical species. Its type specimen was from Java which gives its specific name, javanica.S. javanica is believed to be fairly common in Hainan which is mainly found near water or along streams. It is remarkably easy to identify by its large individual and dark purple flowers.
