Orthrosanthus
Orthrosanthus is a genus of flowering plants in the family Iridaceae first described as a genus in 1827. It is native to western and southern Australia and the Americas from Mexico to northwestern Argentina.
The genus name is derived from the Greek words orthros, meaning "morning", and anthos, meaning "flower". They are known commonly as morning irises.
Description
These are rhizomatous perennial herbs. The linear to sword-shaped leaves are arranged in a layered fan. The flowers are usually blue, except in one white-flowered species. This genus is closely related to the genus Libertia. The flowers are very similar, but Libertia flowers are usually white.; SpeciesOrthrosanthus acorifolius Ravenna - Colombia, VenezuelaOrthrosanthus chimboracensis Baker - Chiapas, Costa Rica, Panama, Colombia, Venezuela, Ecuador, Peru, Bolivia, northwestern Brazil Orthrosanthus exsertus Ravenna - Mexico, HondurasOrthrosanthus laxus Benth. - Western AustraliaOrthrosanthus monadelphusRavenna - southern Mexico, Central AmericaOrthrosanthus muelleri Benth. Benth. - Western AustraliaOrthrosanthus multiflorus Sweet - Western Australia, South Australia, VictoriaOrthrosanthus occissapungus Diels - Peru, Bolivia, northwestern ArgentinaOrthrosanthus polystachyus Benth. - many-spike orthrosanthus - Western Australia