49 8 
The Ohio Naturalist. 
[Vol.XII, No. 6, 
Lycopodium lucidulum. Leaves flattened at their bases and 
ultimately more or less reflexed. Prostrate portion of stem longer, 
frequently rooting, curving upward, and dichotomously branching 
1-3 times to form a loose cluster f-8 in. high. Margin (of leaf) 
erose denticulate above the middle 
Lycopodium selago. Leaves hollow at their bases and ap- 
pressed. Prostrate portion of stem very short, abundantly rooting, 
soon curving upward and dichotomously branching to form compact 
tufts (; 2-7 in. high) of vertically placed branches with dense foliage; 
leaves more or less appressed, or at least upwardly directed, entire. 
Pig. 1. Lycopodium lucidulum, Hocking County, Ohio. 
Pig. 2. Lycopodium porophilum, Fairfield County, Ohio. Photograph 
by Forest B. H. Brown. 
The accompanying figures are given as representative speci- 
mens of the three species. The L. lucidulum was collected in 
Hocking county, while the L. porophilum comes from Fairfield 
county. L. lucidulum is successively dichotomous in habit at rather 
regular intervals; L. porophilum is several times dichotomous in 
close succession with long unbranched branches. The leaves agree 
with Lloyd and Underwood’s descriptions. 
There has been some question as to whether the Ohio forms 
referred to L. porophilum might not be L. selago. In order to gain 
an insight into the character of the European L. selago, the speci- 
mens at the United States Natural Herbarium were studied. 
Through the kindness of Mr. W. R. Maxon, an English specimen 
and an Alaskan specimen were loaned to the writer for special study. 
