200 FLORA OF MOUNT DESERT. 



SECTION I. ACROCARPI. 



Tribe WEISIEJE. 

 CYNODONTIUM, Schimp. 



C. polycarpum (Ehrh.), Schimp. Oncophorus polycarpus 



(Ehrh.), Brid. 



On decayed wood. Wood road to Great Pond, Southwest Har- 

 bor (Rand). 



C. virens (Swz.), Schimp., var. Wahlenbergii (Brid.), Schimp. 



Oncophorus Wahlenbergii, Brid. 

 On decayed wood. Upper Breakneck Pond (Rand). 



TREMATODON, MX. 

 T. ambiguum (Hedw.), Hornsch. 



On the ground. Green Mt. (D. C. Eaton) ; moist woods, 

 north of Long Pond (Theodore G. White). 



DICRANELLA, Schimp. 



D. squarrosa (Starke), Schimp. 



In dense mats on sandy shore, Jordan Pond ; submersed (Rand). 

 As the specimens found are all sterile, some doubt has arisen 

 as to their identity. They are almost identical with specimens 

 collected by E. Faxon at Ammonoosuc Lake, Crawfords, N. H., 

 June 14, 1883, and very similar to specimens collected by Oakes 

 at the White Mts., N. H. (Sulliv. & Lesq., Musci Bor. Am., 

 No. 245). The latter specimens were distributed as " Meesia 

 longiseta, Hedw. var. ?" Faxon's specimens, however, are 

 Dicranella squarrosa, and so with very little doubt are the 

 Mt. Desert specimens. The true identity of Oakes's specimens 

 is still in doubt. Especial thanks are due Dr. C. R. Barnes 

 and Mrs. E. G. Britton for the solution of these puzzling ques- 

 tions of identification. 



D. heteromalla (L.), Schimp. 



On the ground ; common (Rand). Also Great Cranberry Isle 

 (Theodore G. White). 



