Bidens pilosa  L.

Shepherd's Needles, Beggarticks, Spanish Needles, Butterfly Needles
Plants > Angiosperms > Asteraceae > ​​Bidens pilosa
Kingdom: Plantae
Clade: Angiosperms
Class: Dicots
Order: Asterales
Family: Asteraceae (Compositae)
Genus: Bidens
Species: pilosa
  • Common names: Shepherd's Needles, Beggarticks, Spanish Needles, Butterfly Needles
  • Thai names: กี่นกไส้ Ki nok sai (Saraburi), ดาวกระจายไต้หวัน dao krachai taiwan (General), ปืนนกไส้ puen nok sai (Northern), หญ้าก้นจ้ำขาว ya kon cham khao (Saraburi)​
  • Chinese names: 鬼针草 gui zhen cao
  • Distribution: Tropical and subtropical regions of North America, Asia, South America, Africa.
  • Image locations: Chaiyaphum, Chiang Mai
  • Map info: Provinces are highlighted according to phytogeographical areas as used in the Flora of Thailand project.
  • Additional notes: Bidens pilosa is commonly known by the synonym Bidens alba
Bidens pilosa image location map.jpg
Image locations
Images of c from Thailand.
Bidens alba var. radiata.jpg
Bidens alba var. radiata Chaiyaphum July
Bidens alba var. radiata.jpg
Bidens alba var. radiata Chaiyaphum July
Bidens alba var. radiata.jpg
Bidens alba var. radiata Chaiyaphum July
Bidens pilosa.jpg
Bidens pilosa, Mae Taeng, Chiang Mai, August 2016
References: 
The Plant List
Forest Herbarium - BKF​​
Flora of China
Wikipedia