Flaveria chlorifolia

{{Speciesbox

| image =

| image_caption =

| genus = Flaveria

| species = chlorifolia

| authority = A.Gray

| synonyms_ref = {{Cite web|url=http://www.tropicos.org/Name/2702503|title=Tropicos}}

| synonyms = *Flaveria chloraefolia A.Gray

}}

Flaveria chlorifolia, the clasping yellowtops, is a North American plant species of Flaveria within the family Asteraceae. It is native to the southwestern United States (New Mexico, western Texas)[http://bonap.net/MapGallery/County/Flaveria%20chlorifolia.png Biota of North America Program 2014 county distribution map] and northern Mexico (Chihuahua, Coahuila, Nuevo León).[http://swbiodiversity.org/seinet/taxa/index.php?taxon=18243 SEINet, Southwestern Biodiversity, Arizona chapter]

Flaveria chlorifolia is a perennial herb up to 200 cm (80 inches or 6 2/3 feet) tall. One plant can sometimes produce 150 or more flower heads in a branching array, each head with 9-14 yellow disc flowers but no ray flowers.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=112857 Flora of North America, Flaveria chlorifolia A. Gray, 1849. Clasping yellowtops ][https://www.biodiversitylibrary.org/page/28003104#page/616/mode/1up Powell, Albert Michael. 1979. Annals of the Missouri Botanical Garden 65(2): 611-613] description and commentary in English, distribution map on page 608

Chemical composition

Quercetin-3-sulfate 3'-sulfotransferase is an enzyme that uses 3'-phosphoadenylyl sulfate and quercetin 3-sulfate to produce adenosine 3',5'-bisphosphate and quercetin 3,3'-bissulfate. The enzyme can be found in F. chlorifolia.{{cite journal | author = Varin L and Ibrahim RK | year = 1989 | title = Partial purification and characterization of 3 flavonol-specific sulfotransferases from Flaveria chloraefolia | journal = Plant Physiol. | volume = 90 | issue = 3 | pages = 977–981 | doi = 10.1104/pp.90.3.977 | pmid=16666908 | pmc=1061831}}

Ombuin 3-sulfate, the sulfate conjugate of ombuin, can be isolated from F. chlorifolia.Ombuin 3-sulphate from Flaveria chloraefolia. Denis Barron and Ragai K. Ibrahim, Phytochemistry, Volume 27, Issue 7, 1988, pages 2362-2363, {{doi|10.1016/0031-9422(88)80166-3}}

References

External links

[http://eol.org/pages/469334/overview?status=moved_permanently Flaveria chlorifolia, Encyclopaedia of Life]
[http://www.tropicos.org/ImageFullView.aspx?imageid=100016127 photo of herbarium specimen collected in Nuevo León in 1992]

chlorifolia

Category:Flora of Northeastern Mexico

Category:Flora of the South-Central United States

Category:Taxa named by Asa Gray

Category:Flora without expected TNC conservation status