Trachystemon

Life-forms

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Boraginales

Familia: Boraginaceae
Subfamilia: Boraginoideae
Tribus: Boragineae
Genus: Trachystemon
Species: T. orientalis
Name

Trachystemon D.Don, 1832.

Typus: T. orientalis
(L.) G.Don

Synonyms

Homotypic
Psilostemon DC., Prodr. (Candolle) 10: 35. 1846.

Heterotypic
Nordmannia Ledeb. ex Nordm., Bull. Sci. Acad. Imp. Sci. Saint-Pétersbourg 2: 312. 1837.
Typus: Nordmannia cordifolia Ledeb. ex Nordm., nom. illeg. = T. orientalis
(L.) G.Don

References

Don, D. 1832. Edinburgh New Philos. J. 13: 239.

Trachystemon is a genus of flowering plants belonging to the family Boraginaceae.[1]

Its native range is Bulgaria to Turkey.[1] It is a monotypic genus, with the only member being Trachystemon orientalis(L.) D.Don.[1]

Trachystemon orientalis, commonly known as Abraham-Isaac-Jacob or early-flowering borage, is a perennial herb of the family Boraginaceae. Native to eastern Europe, 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.[2]

The name can also refer to several related plants, such as species of Pulmonaria.
References

"Trachystemon D.Don | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 12 March 2021.
"Trachystemon orientalis - Plant Finder". www.missouribotanicalgarden.org. Retrieved 31 March 2021.