Ipomoea violacea

Description

The corolla of the flower of Ipomoea violacea is white, distinguishing this species from Ipomoea tricolor, commonly called Heavenly Blue. It is sometimes mistaken for the cultivar Pearly Gates, the corolla of which is also white, probably because of its misleading Latin binomial name, Ipomoea violacea, "violacea" meaning purple.

Comparative taxonomies

A comparison of the taxonomy of the two plants shows that they belong to different Subgenera, consequently, Ipomoea violacea should not be used as a synonym for Ipomoea tricolor. In exceptional cases where Ipomoea violacea has to be used as a synonym of Ipomoea tricolor, one must specify the incorrect usage by using the abbreviation 'Auct.' for Auctorum.{{Cite book | vauthors = Eich E |url=https://link.springer.com/book/10.1007/978-3-540-74541-9 |title=Solanaceae and convolvulaceae - secondary metabolites: biosynthesis, chemotaxonomy, biological and economic significance: a handbook |publisher=Springer-Verlag |isbn=978-3-540-74540-2 |location=Berlin, Heidelberg |publication-date=January 12, 2008 |language=En |chapter=4.2 Ergolines |doi=10.1007/978-3-540-74541-9 |oclc=195613136 “Such a confusing example resulting in numerous false repetitions in studies of other authors has happened already in the first ergoline paper on Ipomoea tricolor Cav. whose seeds are known as “badoh negro”: Together with this correct synonym the species was incorrectly called I. violacea L. (Hofmann 1964) instead of I. violacea auct., non L. This is of importance since I. violacea L. is the currently accepted name of a different Ipomoea species, I. tuba (Schlecht.) G.Don (Austin and Huáman 1996).” 4.2.3 Occurrence in the Convolvulaceae (p. 224)}}

Ipomoea violacea:

:* Genus: Ipomoea ::*Subgenus: Eriospermum :::*Section: Erpipomoea

Ipomoea tricolor:

:*Genus: Ipomoea ::*Subgenus: Quamoclit :::*Section: Tricolor

Ergoline Alkaloids

Ipomoea violacea is no longer a synonym for Ipomoea tricolor.{{Cite book | vauthors = Eich E |url=https://link.springer.com/book/10.1007/978-3-540-74541-9 |title=Solanaceae and convolvulaceae - secondary metabolites: biosynthesis, chemotaxonomy, biological and economic significance: a handbook |publisher=Springer-Verlag |isbn=978-3-540-74540-2 |location=Berlin, Heidelberg |publication-date=January 12, 2008 |language=En |chapter=4.2 Ergolines |doi=10.1007/978-3-540-74541-9 |oclc=195613136 “Such a confusing example resulting in numerous false repetitions in studies of other authors has happened already in the first ergoline paper on Ipomoea tricolor Cav. whose seeds are known as “badoh negro”: Together with this correct synonym the species was incorrectly called I. violacea L. (Hofmann 1964) instead of I. violacea auct., non L. This is of importance since I. violacea L. is the currently accepted name of a different Ipomoea species, I. tuba (Schlecht.) G.Don (Austin and Huáman 1996).” 4.2.3 Occurrence in the Convolvulaceae (p. 224)}} Ipomoea tricolor contains ergolines, along with 24 other Ipomoeas, but I. violacea is not among them.

References

References

1. {{GRIN
2. "Herbarium musei parisiensis".
3. {{GRIN. ''Ipomoea violacea'' auct.. 406360
4. {{GRIN. ''Ipomoea tricolor''. 20231
5. Manitz, Hermann. (January 1977). "Was ist Ipomoea violacea L.?". Feddes Repertorium Specierum Novarum Regni Vegetabilis.
6. "Solanaceae and convolvulaceae - secondary metabolites: biosynthesis, chemotaxonomy, biological and economic significance: a handbook". Springer-Verlag.
7. "Solanaceae and convolvulaceae - secondary metabolites: biosynthesis, chemotaxonomy, biological and economic significance: a handbook". Springer-Verlag.