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[
Hedyotis auricularia L.
Hedyotis costata R.Br. ex G.Don
Hedyotis crataeogonum Spreng.
Hedyotis geniculata Roxb.
Hedyotis hirsuta Lam.
Hedyotis multicaulis Schltdl. ex Hook.f.
Hedyotis nervosa Lam.
Hedyotis venosa (Blume) Korth
Metabolos auricularius (L.) Blume ex Bremek.
Metabolos ciliaris Blume ex Miq.
Metabolos venosus Blume
Oldenlandia auricularia (L.) K.Schum.
Oldenlandia crataeogonum (Spreng.) Guillaumin
Oldenlandia leopoldvillensis De Wild.
Spermacoce hispida Miq. ex Hook.f.
Spermacoce lineata Roxb.
Exallage auricularia is a perennial plant producing a number of stems from a stout rootstock. It sometimes grows up to 1 metre tall but often has weak stems that creep along the ground, rooting at the nodes[
The plant is harvested from the wild for local use as a medicine and sometimes as a food.
E. Asia - China, Insia, Sri Lanka, Nepal, Bangladesh, Myanmar, Thailand, Vietnam, Malaysia, Indonesia, Philippines to Australia.
Thickets, forests, wet grassland, shady roadsides, rubber, tea or cinchona plantations or along water sides; at elevations up to 1,600 metres[
Leaves - cooked[
]. Boiled and eaten with rice[
A decoction or extract of the leaves or the whole crushed leaves are taken in the treatment of intestinal problems, including dysentery, and also to treat cholera[
A paste of the leaves is considered emollient and is applied to abscesses and wounds[
]. The boiled leaves are rubbed on aching parts of the body or applied as a poultice on cracked skin[
]. The leaf juice is applied for diseases of the eyes[
The plant contains the alkaloid hedyotine[
The stem and root contain 0.001% of the alkaloid auricularine and another alkaloid[
If you have any useful information about this plant, please leave a comment. Comments have to be approved before they are shown here.