THE FERN BULLETIN 



51 



with it, either by the prefix ramo or the addition of 

 the names of the more developed grades mentioned 

 above, thus: ramo-digitatum or muricatum ramu- 

 lostssimum." 



PTERIDOGR A PHIA. 



Maine Ferns Free. — Mr. Alvin H. Trundy, 

 Farmington, Maine, niters to collect any of the ordin- 

 ary ferns and fern allies of his region for readers of 

 Fern Bulletin provided the recipients will pay the 

 postage. To take advantage of this offer requests for 

 specimens should be sent to Mr. Trundy by the first 

 of June. This is is an excellent opportunity to secure 

 the ferns of this part of the world. The Fern flora of 

 Maine was published in this magazine for October. 

 1006. 



Forms of Lycopodium Clavatum. — The com- 

 mon club-moss (Lycopodium clavatum) is very widely 

 distributed being found around the earth in the 

 Northern Hemisphere and extending southward into 

 the mountains of the tropics. Various forms have 

 been described as species and the type is discernable in 

 many plants that do not bear the name of clavatum. 

 Xo doubt a great deal of this variation is due to the 

 wide distribution and consequent differences in the 

 habitat of the plant. M. L. Fernald and C. H. Bis- 

 sell have been studying the differences exhibited by 

 American specimens snd have indicated four forms, 

 one of which is considered new. The true L. clava- 

 tum is regarded as occurring from Michigan to North 

 Carolina and Newfoundland. The plants of the 

 Northwest frequently lack the bristle at the tip of the 

 leaf and have been separated as the variety integerri- 



