Trichostema

Trichostema
Trichostema lanatum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Lamiales
Family:	Lamiaceae
Subfamily:	Ajugoideae
Genus:	Trichostema L.
Type species
Trichostema dichotomum L. [1]
Synonyms [2]
IsanthusMichx. EplingiaL.O.Williams

Trichostema is a genus of flowering plants in the family Lamiaceae, which are aromatic herbs or subshrubs. These plants are native to North America. ^{[2] [3]} Many plant of this genus which have whorls of small blue flowers are called by the common name bluecurls. ^[4]

Research on species in Florida suggests that morphological differences mirror genetic difference and a pair of researchers concluded that insttad of three species endemic to Florida there are actually 10. ^[5]

Species

Species include: ^[2]

• Trichostema arizonicum A.Gray – Arizona, New Mexico, Texas, Sonora, Chihuahua
• Trichostema austromontanum H.F.Lewis – Nevada, California, Baja California
• Trichostema brachiatum L. - central and eastern North America
• Trichostema dichotomum L. – Bahamas, Quebec, Ontario, eastern and south-central United States
• Trichostema fruticosum K.S.McClell. - Mississippi, Alabama, Florida, Georgia
• Trichostema lanatum Benth. – California, Baja California
• Trichostema lanceolatum Benth. – Washington, Oregon, California, Baja California
• Trichostema laxum A.Gray – Oregon, California
• Trichostema mexicanum Epling – northeastern Mexico
• Trichostema micranthum A.Gray – Arizona, California, Baja California
• Trichostema nesophilum K.S. McClell. & Weakley – North Carolina, South Carolina ^[6]
• Trichostema oblongum Benth. – British Columbia, Washington, Oregon, California, Nevada, Idaho
• Trichostema ovatum Curran – California
• Trichostema parishii Vasey – California, Baja California
• Trichostema purpusii Brandegee – central and southern Mexico
• Trichostema rubisepalum Elmer – central California
• Trichostema ruygtii H.Lewis – northern California (Lake, Napa, Solano Counties)
• Trichostema setaceum Houtt. – eastern and south-central United States
• Trichostema simulatum Jeps. – Oregon, California
• Trichostema suffrutescens Kearney – Florida

References

1. lectotype designated by N. L. Britton et A. Brown, Ill. Fl. N.U.S. ed. 2. 3: 104 (1913)
2. Kew World Checklist of Selected Plant Families
3. Biota of North America Program 2013 county distribution maps
4. NRCS. "Trichostema". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 14 December 2015.
5. https://www.flawildflowers.org/seven-new-trichostema-species/
6. Weakley, Alan S.; Schoonover McClelland, R. Kevan; LeBlond, Richard J.; Bradley, Keith A.; Matthews, James F.; Anderson, Chad; Franck, Alan R; Lange, James (2019). "Studies in the Vascular Flora of the Southeastern United States: V" (PDF). Journal of the Botanical Research Institute of Texas. 13 (1): 107–129. doi:10.17348/jbrit.v13.i1.832. S2CID   244513799.