wild tribulus terrestris grass with tiny yellow flowers and green leaves

background beautiful bindii blooming botany caltrop closeup devil devils ecology environment floral flower flowers foliage forest fresh freshness fruit fruits garden goathead goats grass grasses green ground head herb invasive leaf leaves medical natural nature outdoor pattern plant pretty puncture puncturevine species spring summer tackweed terrestris texture thorn thorny tiny tribulus tropical vine weed wild wildlife wood yellow botanical herbal medicine weed agriculture field earth medicinal