Galinsoga quadriradiata 粗毛牛膝菊、睫毛牛膝菊、粗毛小米菊、辣子草、粗毛辣子草

Common name: Shaggy-soldier
Scientific name: Galinsoga quadriradiata 粗毛牛膝菊、睫毛牛膝菊、粗毛小米菊、辣子草、粗毛辣子草
Genus: Galinsoga 牛膝菊屬、小米菊屬
Family: Asteraceae or Compositae 菊科, aster , daisy, composite or sunflower family

Remarks:

Origin:  Neophyte (established after 1500 AD). It is a native of Central and South America and was first recorded from the wild in 1909.

Date:  9th Aug

014

027

024 Pubescent stem; penduncles with long glandular hairs.

025 More densely pubescent of the lower stem.

024_2 Penduncles with long glandular hairs and few simple hairs. (vs peneduncles with short hairs, a few glandular in Galinsoga parviflora 牛膝菊, 小米菊, 辣子草, 向陽花, 珍珠草, 銅錘草, gallant-soldier)

024_3 Stem more densely pubescent. (Note there are fewer glandular hairs in stem than in penduncle.) (vs stem sparsely hairy  in Galinsoga parviflora  牛膝菊, 小米菊, 辣子草, 向陽花, 珍珠草, 銅錘草, gallant-soldier)

025_1 Lower stem are even more densely pubescent. (Note no glandular hairs could be seen here.)

018

015 Leaves simple, opposite, ovate and stalked.

015_1 Hairs on the upper surface and the margin of the leaf.

026

026_1 Hairs on the veins and underside of the leaf.

022

021

024_1 Side view of the flower head showing the involucral bracts and the peduncle.

022_2 Front view of the flower head. Note the middle disc florets do not open yet. Those opened disc florets have 5 petals. Those white petals are the ligules of the ray florets.

021_2 Note the two ray florets on the left and left bottom of the flower head above, they are blooming, each with a 2-lobed stigma.

021_1