Hedyotis is a very problematic genus or group of genera. Neither the overall identity and limits of this lineage, nor the evolutionary patterns within it, are at all understood or delineated. Widely differing treatments have long been used in different regions and floras. The situation is far from resolution or even general consensus and so many authors treat the genus very broadly[
]. In line with several recent (up to 2013) molecular and phylogenic studies, the Kew ‘World Checklist of Selected Plant Families’ has recognised a number of distinct genera and this is the treatment we are adopting here[
Oldenlandia capitellata (Wall. ex G.Don) Kuntze
Oldenlandia rubioides Miq.
Hedyotis kingiana Elmer
Hedyotis dimorpha Craib
Oldenlandia dimorpha (Craib) Pit.
Hedyotis capitellata is a perennial plant with stems up to 2 metres long that become more or less woody and sometimes persist. The stems do not always support themselves well, the plant often scrambling over the ground or climbing into the nearby vegetation[
The plant is harvested from the wild for local use as a medicine.
E. Asia - southwest China, northeast India, Bangladesh, Myanmar, Thailand, Vietnam, Malaysia, Indonesia, Philippines
A common climber over bushes and hedges up to 1,200 metres[
]. Broad-leaved forests in valleys, sunny mountain slopes; at elevations around 1,500 metres in Yunnan[
The leaves are taken internally for treating kidney complaints[
]. They have been used successfully as an antacid in the treatment of peptic ulcers[
Applied externally, they are used to make a poultice for treating snake bites, broken bones, bruises, rheumatism, lumbago and ague [
A decoction of the leaves and young stems is used to treat ulcers in the mouth, glossitis, pharyngitis and peptic ulcers[
A decoction of the root is administered to women after childbirth, and is also used against constipation, indigestion, gastric vertigo and dysentery[
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