''Dialypetalum'' is a genus of plants

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 ...

Madagascar Madagascar, officially the Republic of Madagascar, is an island country that includes the island of Madagascar and numerous smaller peripheral islands. Lying off the southeastern coast of Africa, it is the world's List of islands by area, f ...

. It differs from other

Lobelioideae Lobelioideae is a subfamily of the plant family Campanulaceae. It contains 32 genera, totalling about 1200 species. Some of the larger genera are ''Lobelia'', '' Siphocampylus'', ''Centropogon'', '' Burmeistera'' and '' Cyanea''. They are peren ...

in that it has regular (

actinomorphic Floral symmetry describes whether, and how, a flower, in particular its perianth, can be divided into two or more identical or mirror-image parts. Uncommonly, flowers may have no axis of symmetry at all, typically because their parts are spirall ...

) flowers with virtually free

petals Petals are modified leaves that form an inner whorl surrounding the reproductive parts of flowers. They are often brightly coloured or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''coroll ...

, and is

dioecious Dioecy ( ; ; adj. dioecious, ) is a characteristic of certain species that have distinct unisexual individuals, each producing either male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproduction is ...

. It contains the following species, accepted as of July 2014:Kew World Checklist of Selected Plant Families
/ref> #'' Dialypetalum compactum'' Zahlbr. #'' Dialypetalum floribundum'' Benth. in G.Bentham & J.D.Hooker #'' Dialypetalum humbertianum'' E.Wimm. in H.G.A.Engler #'' Dialypetalum × hybridum'' E.Wimm. in H.G.A.Engler ''(D. compactum × D. floribundum)'' #''

Dialypetalum montanum ''Dialypetalum'' is a genus of plants endemic to Madagascar. It differs from other Lobelioideae in that it has regular (actinomorphic) flowers with virtually free petals, and is dioecious Dioecy ( ; ; adj. dioecious, ) is a characteristic of ...

'' E.Wimm. in H.G.A.Engler #'' Dialypetalum stenopetalum'' E.Wimm. in H.G.A.Engler

References

External links

*
Madagascar catalogue, Living Plant image, ''Dialypetalum floribundum''photo of herbarium specimen at Missouri Botanical Garden, collected in Madagascar in 1990, ''Dialypetalum montanum''
{{Taxonbar, from=Q8355257 Lobelioideae Campanulaceae genera Endemic flora of Madagascar