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Helichrysum arenarium (L.) Moench - syn.Gnaphalium arenarium L. - Asteraceae
yellow everlasting, Sand-Strohblume

Perennial herb, entire plant tomentose-lanate, native to Europe, Sibiria, West and Central Asia.
http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200024007

The dried flower heads (Helichrysi flos, Flores Gnaphalii arenari) are used as choleretic and diuretic; also said to promote gastric and pancreatic secretions.
„Helichrysum flowers contain several flavanoids. Isosalipurposdie, a chalcone, is responsible for the yellow colour of the bracts. It occurs with the bitter tastiing naringenin, naringenin-5-O-diglucoside, helichrysin A and helichrysin B (= salipurposide), and various glycosides of apigenin, luteolin, kaempferol and quercetin.“
[Medicinal Plants of the World. Ben-Erik Van Wyk and Michael Wink, Pretoria 2004, 168]

Main components of e ssential oil from H.arenarium samples collected in Serbia and Montenegro were limonene (11%), α-ylangene (14%), cyclosativene (11%), di-epi-α-cedrene (17%), α-selinene (8%), and p-cymene (3%).
[Chemical composition and antimicrobial activities of essential oils of Myrrhis odorata (L.) Scop, Hypericum perforatum L and Helichrysum arenarium (L.) Moench., Rančić, A., Soković, M., Vukojević, J., Simić, A., Marin, P., Duletić-Laušević, S., Djoković, D., Journal of Essential Oil Research, Vol.17(3), 2005, 341-345]

Naringenin-7-O-β-d-glycoside, isoquercitrin, and astragalin were also isolated with HSCCC.
[Separation and purification of three flavonoids from Helichrysum arenarium (L.) Moench by HSCCC., Yang, Y., Huang, Y., Gu, D., Yili, A., Sabir, G., Aisa, H.A., Chromatographia, Vol.69(9-10), 2009, 963-967]

„The methanolic extract from the flowers of Helichrysum arenarium L. MOENCH was found to show inhibitory effect on tumor necrosis factor-α (TNF-α, 1 ng/ml)-induced cytotoxicity in L929 cells. From the methanolic extract, 50 constituents including four new flavanone and chalcone glycosides named arenariumosides I, II, III, and IV were isolated. The stereostructures were elucidated on the basis of chemical and physicochemical evidence. Among the constituents, naringenin 7-O-β-D-glucopyranoside, apigenin 7-O-β-D-glucopyranoside, apigenin 7-O-gentiobioside, and apigenin 7,4′-di-O-β-D-glucopyranoside significantly inhibited TNF-α-induced cytotoxicity in L929 cells at 30μM.“
[Medicinal Flowers. XXVII. New Flavanone and Chalcone Glycosides, Arenariumosides I, II, III, and IV, and Tumor Necrosis Factor-. ALPHA. Inhibitors from Everlasting, Flowers of Helichrysum arenarium., Morikawa, T., Wang, L. B., Nakamura, S., Ninomiya, K., Yokoyama, E., Matsuda, H., Yoshikawa, M., Chemical and Pharmaceutical Bulletin, Vol.57(4), 2009, 361-367]

Dietrich, A.G., Flora regni borussici, vol. 11: t. 767 (1843) [A.G. Dietrich]
http://plantillustrations.org/species.php?id_species=501336