macro image of tribulus terrestris plant with flower ,seeds and

abortifacient alterative anthelmintic aphrodisiac astringent bloom care carminative demulcent diuretic dry dysfunction erectile erection extract flavonoide flower green ground health herb hormone human improve increases leaf leaves libido lipid medical metabolism plant pollen popular protodioscine prototribestin pseudoprotodioscin sand saponin seed sexual terrestris treat tree tribestin tribulosin tribulus yellow