''Ruthiella'' is a genus of plants in the

Campanulaceae The family Campanulaceae (also bellflower family), of the order Asterales, contains nearly 2400 species in 84 genera of herbaceous plants, shrubs, and rarely small trees, often with milky sap. Among them are several familiar garden plants bel ...

. It contains 4 known species, all

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; , fossilized , also known as Papua or historically ) is the List of islands by area, world's second-largest island, with an area of . Located in Melanesia in the southwestern Pacific Ocean, the island is ...

.Kew World Checklist of Selected Plant Families
/ref>Lammers, T.G. (2007). World checklist and bibliography of Campanulaceae: 1-675. The Board of Trustees of the Royal Botanic Gardens, Kew. #'' Ruthiella oblongifolia'' (Diels) Steenis #'' Ruthiella saxicola'' (P.Royen) Steenis #'' Ruthiella schlechteri'' (Diels) Steenis #'' Ruthiella subcordata'' (Merr. & L.M.Perry) Steenis

References

* {{Taxonbar, from=Q9071469 Lobelioideae Endemic flora of New Guinea Campanulaceae genera