Tribulus terrestris and Saponins?

Tribulus Terrestris Botanical Description.

Tribulus terrestris Extract Tribulus Saponins Protodioscin photo picture image Mature plant: Prostrate with stems up to 2m long. Leaves are opposite, each consisting of 4-8 pairs of spear shaped leaflets. There are long hairs on the leaf margins and lower surface. Stems are round and hairy. Flowers are yellow

Seeds:Enclosed in a woody star-shaped structure 5-7 mm long and 5-6 mm wide (carpels). Up to five seeds in each carpel each seed 1.5-3 mm long, yellow. Each plant can have upwards of 2000 seeds

Seedlings:Cotyledons are narrow oval, round apex and hairless. Immature plants have leaves divided into pairs of hairy oval leaflets with pointed apices
Flowers: Yellow, 8-15 mm diameter,5 petals.

Fruit: Woody burr about 1 cm diameter with sharp spines to 6 mm long. Burr consists of 5 wedge shaped segments. Each segment has 2 unequal pairs of spines.

Habitat:The genus Tribulus comprises about 20 species of creeping shrubs or herbs, of which Tribulus terrestris is themost common. Tribulus terrestris (also known as puncture vine) is a tap-rooted flowering plant that grows wild throughout China,India, western parts of Asia and southern parts of Europe and Africa. Extracts from the root or seeds of T. terrestris are available in powdered capsule or liquid form.

Prefers light textured soils but will grow over a wide range of soil types. In Australia it is a weed of cultivated crops, overgrazed pastures, stockyards, roadsides, lawns and neglected areas.
Tribulus terrestris Extract Tribulus Saponins Protodioscin photo picture image