Transformational Gardening


Pennsylvania Clubmoss (Hickey‘s Tree Clubmoss, Intermediate Ground Pine) (Lycopodium hickeyi) (Synonym: Dendrolycopodium hickeyi): Images

Date Location Notes Images
April 30, 2011 Southeastern, New Hampshire This is my third clubmoss! Previously, I have identified Southern Ground Cedar (Diphasiastrum digitatum) and Flat-Branched Ground Pine (Lycopodium obscurum). Pennsylvania Clubmoss is very similar to Flat-Branched Ground Pine in that the strobili (cone-like structures) have no stalk (sessile), but grow right from the leaved branches and the main stem is not prickly (the tiny leaves do not stick straight out). It grows upright like Flat-Branched Ground Pine -- looks like a little tree.

But the main difference is that the Pennsylvania Clubmoss branches with leaves feel round when held, but the Flat-Branched Ground Pine branches feel flat. This is due to the fact that the Pennsylvania Clubmoss leaves are all the same size and spread the same amount while the Flat-Branched Ground Pine has leaves on the bottom that are much smaller and not spreading (which gives it a flat feel). Compare the second picture on the right of a Pennsylvania Clubmoss branch with the very last picture on the bottom left which is a labeled picture of a Flat-Branched Ground Pine branch.
Date Location Notes Images
April 15, 2012 Southeastern, New Hampshire