Botanical Information Sigesbeckia orientalis L. (procuring samples)

Synonyms Minyranthes heterophylla Turcz.
Sigesbeckia brachiata Roxb.
Sigesbeckia caspia Fisch. & C.A.Mey.
Sigesbeckia esquirolii H.Lév. & Vaniot Repert.
Sigesbeckia gracilis DC.
Sigesbeckia humilis Koidz.
Sigesbeckia iberica Willd.
Sigesbeckia microcephala DC.
Sigesbeckia orientalis f. angustifolia Makino
Sigesbeckia orientalis var. tenggerensis Hochr.
Common name (en) Common St. Paul's wort
Common name (fr) Herbe Saint Paul
Common name (vi) Hy thiêm
Common name (zh) 豨莶

Sample preparation Ultrasonicate 1 g of the powder with 10 mL of methanol for 15 min, filter, use the filtrate as the test solution
Mobile phase Chloroform, methanol 4:1 (v/v)
Derivatization Spray with 5% vanillin, heat span style="color:red">until the spots appear