Publications on this list will help hikers identify and appreciate lycopods found in the Westchester Wilderness Walk/Zofnass Family Preserve as well as learn about the ecology of the lycopods they encounter. Be aware, however, that studies of the classification of plants based on molecular data has resulted in nomenclatural changes made after some of the references in this list were published; thus, more current names may have priority over the names used in these publications. For example, Lycopodium lucidula (shining firmoss) is now a synonym of Huperzia lucidula, i.e., the latter name is the one that lycopod experts accept.

Chadde, S. W. 2013. Northeast Ferns. A Field Guide to the Ferns and Fern Relatives of the Northeastern United States. Published by the author. This book includes keys, descriptions with ample illustrations, and distribution maps of 19 families and 36 genera of true ferns and 3 families and 8 genera of fern relatives (quillworts [Equisetaceae], clubmosses [Lycopodiaceae], and  spikemosses [Selaginellaceae]).

Gleason, H. A. & A. J. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden. 993 pp. This book provides keys and short descriptions of the vascular plant species of the northeastern United States. At the time of this publication the genus Lycopodium was the only genus recognized for the lycopods of this region.

Holmgren, Noel H. 1998. Illustrated companion to Gleason and Cronquist’s Manual: Illustrations of the vascular plants of northeastern United States and adjacent Canada. The New York Botanical Garden Press. xx + 937 pp. Drawings of many of the species of lycopods described in Gleason and Cronquist (1991). At the time of this publication the genus Lycopodium was the only genus recognized for the lycopods of this region.