''Wigandia'' is a genus of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...

s within the waterleaf subfamily,

Hydrophylloideae Hydrophylloideae is a subfamily of the plant family Boraginaceae. Its taxonomic position is somewhat uncertain. Traditionally, and under the Cronquist system, the taxon was given family rank under the name Hydrophyllaceae, and treated as part of ...

. They are found mainly in

Central America Central America is a subregion of North America. Its political boundaries are defined as bordering Mexico to the north, Colombia to the southeast, the Caribbean to the east, and the Pacific Ocean to the southwest. Central America is usually ...

and

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...

, though one or two species are found as far north as the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

. Some are grown as ornamental plants and will flourish in most Mediterranean or temperate regions. The genus is named for

Johann Wigand Johann Wigand (Latin: Jo(h)annes Wigandus; c. 1523 – 21 October 1587) was a German Lutheran cleric, Protestant reformer and theologian. He served as Bishop of Pomesania. Johann Wigand was born at Mansfeld in Saxony-Anhalt, Germany. He was ...

(c. 1523–1587), German Lutheran cleric and theologian, and Bishop of

Pomesania Pomesanians were a Prussian clan. They lived in Pomesania (; ; ), a historical region in modern northern Poland, located between the Nogat and Vistula Rivers to the west and the Elbląg River to the east. It is located around the modern towns ...

. Within the Hydrophylloideae, ''Wigandia'' species are unusual in having minute seeds and a high base

chromosome A chromosome is a package of DNA containing part or all of the genetic material of an organism. In most chromosomes, the very long thin DNA fibers are coated with nucleosome-forming packaging proteins; in eukaryotic cells, the most import ...

number (19); it is also the only

neotropical The Neotropical realm is one of the eight biogeographic realms constituting Earth's land surface. Physically, it includes the tropical terrestrial ecoregions of the Americas and the entire South American temperate zone. Definition In biogeogra ...

genus in the subfamily. Some species originally classified in ''Wigandia'' are now treated in other genera, e.g. ''

Eriodictyon ''Eriodictyon'' is a genus of plants known by the common name yerba santa within the Hydrophylloideae subfamily of the borage family, Boraginaceae. They are distributed throughout the southwestern United States and Mexico. Description Most spe ...

''. There is a group of closely related genera within the Hydrophylloideae subfamily, and it is likely that further taxonomic work will result in additional reclassifications. A recent

molecular phylogenetic Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...

analysis of the Hydrophylloideae included two ''Wigandia'' species (''W. caracasana'' and ''W. urens''), and confirmed that they lay within a

clade In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ...

that includes ''Eriodictyon'', and also the genera '' Nama'' and '' Turricula''.

Species

Six species are currently accepted. *''

Wigandia brevistyla ''Wigandia'' is a genus of flowering plants within the waterleaf subfamily, Hydrophylloideae. They are found mainly in Central America and South America, though one or two species are found as far north as the United States. Some are grown as ...

'' *''

Wigandia crispa ''Wigandia'' is a genus of flowering plants within the waterleaf subfamily, Hydrophylloideae. They are found mainly in Central America and South America, though one or two species are found as far north as the United States. Some are grown as ...

'' *''

Wigandia ecuadorensis ''Wigandia'' is a genus of flowering plants within the waterleaf subfamily, Hydrophylloideae. They are found mainly in Central America and South America, though one or two species are found as far north as the United States. Some are grown as ...

'' Cornejo, X. (2006). ''Wigandia ecuadorensis'' (Hydrophyllaceae), a new species of the tropical dry forests on the west coast of Ecuador. ''Novon, 16'', 324-327. *''

Wigandia pruritiva ''Wigandia'' is a genus of flowering plants within the waterleaf subfamily, Hydrophylloideae. They are found mainly in Central America and South America, though one or two species are found as far north as the United States. Some are grown as ...

'' *''

Wigandia urens ''Wigandia'' is a genus of flowering plants within the waterleaf subfamily, Hydrophylloideae. They are found mainly in Central America and South America, though one or two species are found as far north as the United States. Some are grown as ...

'' (synonym ''

Wigandia caracasana ''Wigandia caracasana'', the Caracus wigandia, is a species of ornamental plant. It is an evergreen that grows to a height of up to 3 metres (10 ft). It has purple flowers in large clusters from spring to autumn. Some sources treat it as a ...

'' ) *''

Wigandia wurdackiana ''Wigandia'' is a genus of flowering plants within the waterleaf subfamily, Hydrophylloideae. They are found mainly in Central America and South America, though one or two species are found as far north as the United States. Some are grown as ...

Formerly placed here

Species formerly classified within ''Wigandia'' include: *''

Eriodictyon californicum ''Eriodictyon californicum'' is a species of plant within the family Boraginaceae. It is also known as yerba santa (sacred herb), mountain balm, bear's weed, gum bush, gum plant, and consumptive weed.Patricia Kaminski and Richard Katz.Yerba Santa ...

'' (formerly ''W. californica'')

References

* Hydrophylloideae Boraginaceae genera Taxa named by Carl Sigismund Kunth {{Hydrophylloideae-stub