spear thistle with blooming flower and thorns

asteraceae asterales asterids biennial biodiversity biology bloom blooming blooms blossom bokeh botanical botany bud bull carduoideae cirsium closeup common cynareae detail europe flora floral floret flower green leaf leaves monocarpic nature noxious plant prickle prickly purple rosette scottish sharp spear spiky spines spiny stamen stem summer thistle thorn ukraine vulgare weed wildflower