- ground pine, Christmas green - any of several club mosses having long creeping stems and erect branches
--1 is a kind of club moss, club-moss, lycopod
--1 has particulars:running pine, Lycopodium clavitum; ground cedar, staghorn moss, Lycopodium complanatum; ground fir, princess pine, tree clubmoss, Lycopodium obscurum; foxtail grass, Lycopodium alopecuroides - ground pine, yellow bugle, Ajuga chamaepitys - low-growing annual with yellow flowers dotted red; faintly aromatic of pine resin; Europe, British Isles and North Africa
--2 is a kind of bugle, bugleweed