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Perennial plant, up to 60 cm tall, with very characteristic bluish-green colour. Basal leaves petiolate, leathery, ovate, strongly armed with spines. Cauline leaves without petioles, similar to the previous ones. Small, blue flowers in dense subspheric umbels, 2 cm in diameter, protected by spiny bracts. Fruit achene type.
Camera Model: NIKON D300. Exposure Time: 1/320 sec.; f/11; ISO Speed Rating: 200. Exposure Bias: 0 EV. Focal Length: 90.0 mm. No flash fired