There are SO many hinoiki cypresses! This specific one is Chamaecyparis obtusa 'Gracilis' (not gracilis nana). It's often called "Slender Hinoiki False Cypress". It is extremely slow growing ultimately reaching 8-15' tall which is "dwarf" compared to the straight species which can get 50' tall. Some references call this one a semi-dwarf since there are many hinoiki that remain much smaller.