枞树形叶根 fir-tree root ; fir-tree blade root ; tree root ; Christmas tree blade root
球形叶根 bulbous root ; ball and slot dovetail ; roll dovetail
轴向枞树形叶根 axial fir-tree blade root
周向枞树形叶根 annular fir-tree blade root
外包枞树形叶根叶片 fir-tree straddle root blade ; blade with external fir-tree root
倒T形叶根 inverted-T-type blade root
外包形叶根叶片 blade with straddle root
阶梯形叶根叶片 blade with stepped root
外包式枞树形叶根 inverted fir-tree blade root
枞树形叶根槽 fir-type groove
植株灌木型，茎多分枝，可长至50厘米高或更高，茎干8到15毫米粗，淡绿色，有白霜，近根处色深暗，叶痕呈双凸形。
Plant shrubby, caudex branching, to 50 cm tall or more, 8-15 mm thick, pale green and glaucous above, darker below, leaf scars lenticular.
荆芥株高、茎径变化动态，根、茎、叶、穗干重积累动态均呈不同特征的“S”形曲线。
The dry weights of root, stem, leaf and spike coubld be described as S curves either.
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