1902] Leavitt, — Notes on Lycopodium 57 



On the coast of Maine, especially on the plains of Kennehunkport 

 where boreal plants are so common, I found large areas of it mostly 

 about a foot high. On August 8, 1901, I saw near the Town House 

 large patches which had red and purple fruit. In a few days this 

 had darkened a great deal and was wrinkled and dull, while the nor- 

 mal fruit was plump and shining. In all cases the leaves and 

 pedicels were glabrous. 



It is evident that these plants need much further study and I 

 should be pleased to hear from others in regard to them. 

 Westminster, Vermont. 



NOTES ON LYCOPODIUM. 

 R. G. Leavitt. 



Lycopodium ci.avatum, var. monostachyon on Mr. Monad- 

 nock. — In driving through elevated pasture land on the outlying 

 southern slopes of Mt. Monadnock, New Hampshire, in November, 

 1 90 1, I was attracted by a growth of Lycopodium clavatum covering a 

 plot of dry open ground 12 or 15 feet in diameter, and noticeable 

 even at some little distance for its unusual appearance. The plant 

 differed from ordinary clavatum in having an exceedingly stiff habit, 

 the secondary shoots being shorter and more erect, the lateral seg- 

 ments of these shoots less divergent, and the leaves far less spread- 

 ing than in the type. The later leaves of each season were closely 

 appressed, the latest particularly so, and thus the annual growths of 

 the branchlets being plainly marked off the plant had a conspic- 

 uously articulated appearance. I found in all 70 peduncles bearing 

 in each case a single strobile. 



Analogous forms of Z. complanatum and Z. obscurum are to be 

 seen where these species occur in open, dry situations. In complana- 

 tum we get short, sparingly branched, more or less erect segments, 

 and reduction in the number of strobiles to each peduncle ; in the 

 obscurum, similar effects on the general habit, with certain resultant 

 changes in the plan of the lateral segments. These variations, which 

 are often very pronounced, are due to physiological causes. r On the 

 contrary the characters distinguishing the form of Z. clavatum in 

 question seem to be constitutional. The specimens taken agree 

 with plants from further north, of the variety monostachyon. This 



