222 FLORA OF MOUNT DESERT. 



KANTIA, S. F. Gray. 



K. Trichomanis (L.), S. F. Gray. 



On ground. Wood road to Western Mt. ; Jordan Pond path, 

 Seal Harbor (Rand). 



SCAPANIA, Dumort. 



S. undulata (L.), Dumort. 



On stones in brooks, usually submersed; frequent. 

 S. irrigua (Nees), Dumort. 



On rocks in water. Jordan Pond; Stanley Brook (Rand). 

 S. nemorosa (L.), Dumort. 



On wet rocks and damp ground; very common. 



DIPLOPHYLLUM, Dumort. 



D. albicans (L.), Dumort. 



This species is distinguished from D. taxifolium '*by the 

 presence in the two lobes of a pseudo-nerve, which is often 

 colorless, and consists of a series of from 4 to 6 elongated 

 cells. A cross-section of the leaf shows the cells to be of 

 equal diameter as the others, only with the outer walls thick- 

 ened considerably." Pearson, Canadian Hepaticse, 15. On 

 rocks. Browns Mt. Notch (Rand). 



D. taxifolium (Wahl.), Dumort. D. albicans, Dumort., var. 

 taxifolium, Nees. Gray, Man., 6th ed., 715. 



On rocks. West Branch of Hadlock Brook (Rand). 

 D. Dicksoni (Hook.), Dumort. 



Stems prostrate, copiously rooting below, mostly simple with 

 ascending apices; leaves deeply 2-lobed, spreading or somewhat 

 involute when dry, pale or becoming whitish, the lower lobe 

 obliquely ovate or ovate-lanceolate, somewhat falcate, the upper 

 lobe a half smaller, lanceolate, acute; leaf cells rather large, 

 nearly uniform; perianth ovate, with a plicate-laciniate mouth. 

 On rocks. Northern end of Beech Mt. (Rand). 



