山防風 Globethistle (Echinops)

菊科,漏蘆屬的多年生草本植物,別名:漏蘆.土防風.華東藍刺頭.南藍刺頭.鬼油麻.莢蒿.野蘭.東南藍刺頭。根和藍色球形花序可為藥用,可做切花,非常容易用種子繁殖,需全日照+排水良好
藥用參考:
http://www.internet.hk/doc-view-56353.html

For medicine, check this link:
http://staging.sacredlotus.com/herbs/get.cfm/chinese_herb/lou_lu_echinops_root_rhaponticum