Biden Pilosa Weed

The outer involucral bracts are shorter than the inner involucral bracts.

Biden pilosa weed. It is both grown and eaten in africa. This common weed grows in a wide variety of habitats. Across china the plant can be found growing on roadsides and in fields and villages at elevations below 2500 m. This plant has been used in medicine and.

Bidens pilosa is a cosmopolitan weed native to south and central america but it is now very widespread throughout tropical and subtropical regions of the world. Its many common names include black jack beggarticks cobblers pegs and spanish needle but most commonly referred to as farmers friends. Bidens pilosa also called bidens leucantha is the main species used for medicinal studies but there are a number of other varieties in the bidens genus that historical use and early studies suggest can also be used. Pilosa with capitula without ray flowers or with short rays up to 3 mm and involucral bracts numbering 7 10.

The entire plant is medicinally active including the roots. Bidens pilosa has outer involucral bracts a whorl or several whorls of modified leaves surrounding a flower or an infloresence that are linear or lanceolate and are finely hairy on the margins edges. One isolated plant can produce over 30000 seeds which are generally highly viable. Kinehi bidens pilosa kookoolau native bidens species hawaii.

It is widely used throughout malawi and zimbabwe. Bidens pilosa is an annual species of herbaceous flowering plant in the daisy family asteraceae. It is native to the americas but is widely distributed as an introduced species in other regions worldwide. Capitula with 5 8 ray flowers with well developed rays 5 16 mm long and involucral bracts numbering mostly 12 vs.

It can be found widely naturalized in africa europe asia america australia and on many islands across the indian and the pacific ocean flora of china editorial committee 2018. Cobblers pegs bidens pilosa is well known as a weed of gardens parks crops pastures roadsides disturbed sites and waste areas but it also invades waterways rainforest margins open woodlands and coastal sites particularly in warmer regions. It is only a very minor food in papua new guinea. This plant is a troublesome weed in many places.

Amor seco desmodium adscendens is also called amor seco. Bidens pilosa normally behaves as an annual weed but at least one form b. Radiata may behave as a perennial.