Trachystemon

{{Short description|Genus of flowering plants}}

{{Speciesbox

|image = Trachystemon_orientalis_B.jpg

|image_caption =

|genus = Trachystemon

|parent_authority = D.Don

|species = orientale

|authority = (L.) G.Don

}}

Trachystemon is a monotypic genus of flowering plants belonging to the family Boraginaceae.{{cite web |title=Trachystemon D.Don {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:4841-1 |website=Plants of the World Online |access-date=12 March 2021 |language=en}} The only species is Trachystemon orientalis, commonly known as Abraham-Isaac-Jacob or early-flowering borage.

Its native range is Bulgaria to Turkey.

It is a perennial herb of the family Boraginaceae. It is frequently grown as an ornamental for its early blue-violet flowers and large leaves. It quickly spreads to provide a dense groundcover. "Trachystemon" is derived from the Greek "trachys", meaning rough, and "stemon", a stamen. The specific epithet, "orientalis" means eastern or from the orient, and is a reference to the native distribution of this species. Trachystemon orientalis is endemic to southeastern Europe and western Asia.{{cite web |title=Trachystemon orientalis - Plant Finder |url=https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=278022 |website=www.missouribotanicalgarden.org |access-date=31 March 2021}} In Turkey it is known as Kalidirk dolmasi and leaves are traditionally eaten as a spinach-like vegetable.