act four blood jaguars horsetail family : equisetaceae genus : equisetum species : arvense common name : field horsetail ethnic names : at quyroughi , atkuyrugu , chieh hsu ts'ao , cola de caballo , equiseto menor , kilkah asb , prele , sugina , thanab al khail , vara de oro , wen ching properties/actions : astringent , antiinflammatory , diuretic , antihemorrhagic twelve lake crossing august 15 , 8:11 a.m. instar institute langley , virginia lauren slid the magnetic security card through the lock on her office door and entered .