Dalea citrina (Rydb.) Bullock
Dalea citriodora (Cav.) Willd.
Dalea platystegia S.Schauer
Dalea polyphylla M.Martens & Galeotti
Dalea roseola (Rydb.) R.S.Cowan
Dalea vernicia (Rose) Greenm.
Parosela citrina Rydb.
Parosela citriodora (Cav.) Rose
Parosela polyphylla (M.Martens & Galeotti) Rose
Parosela roseola Rydb.
Parosela vernicia Rose
Psoralea citriodora Cav.
Psoralea citrodora Sessé & Moc.
Psoralea foliolosa Aiton
Dalea foliolosa is a variable annual plant usually growing 10 - 100cm tall[
]. The plant can either branch from the base, the stems then being diffuse and assurgent; or be simple and paniculately branching from near or well above the middle of the stem[
The plant is harvested from the wild for local use as a medicine.
C. America - Honduras, Guatemala, north to northern Mexico
Dry, often weedy places, becoming colonial along highways, in fields, in disturbed and over-grazed brushland, on a variety of volcanic and sedimentary substrata; mostly at elevations from 1,550 - 2,500 metres[
Dalea foliolosa is found wild from the temperate highlands of northern Mexico to the tropical regions at lower elevations from Mexico to Guatemala and Honduras[
The crushed foliage has a strong smell of lemon balm (Melissa officinalis)[
This species has a symbiotic relationship with certain soil bacteria; these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[
The plant (especially the essential oil) is antiinflammatory and hypoglycaemic[
]. An infusion of the plant is used in the treatment of type 2 diabetes[
Applied topically, the plant is used to treat contusions and abrasions[
The plant yields 2.5 - 3.2% essential oil, characterized by a dominance of monoterpenes over sesquiterpenes and
aliphatic hydrocarbons. The principal compounds were cryptone (22 - 30%); linalool (10 - 17%); caryophyllene oxide (4 - 15%); ascaridole (4 - 8%) and beta-citronellol (3 - 7%)[
The essential oil has shown significant antioxidant, hypoglycaemic and antibacterial activities[
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