Vol. XIII] EVANS— HEP ATI CAi OF CALIFORNIA J29 



reason he considers the reduction justifiable. He makes no 

 mention, however, of the unlobed leaves, which Howe de- 

 scribes as interpolated among the more normal bilobed leaves. 

 Until the significance of these is more fully understood, it 

 seems wisest to keep S. heterophylla distinct from 5". undulata, 



37. Scapania perlaxa Warnst. Hedwigia 63: 70. 1921 



The type specimen of this species is preserved in the Botani- 

 cal Museum at Berlin-Dahlem and was collected by Bolander 

 on wet granite rocks in the Yosemite Valley. The writer has 

 as yet been unable to examine this specimen and has seen no 

 material of Bolander's that agrees with Warnstorf's descrip- 

 tion, although all the Californian Scapanise in the U. S. 

 National Herbarium have been available for study. According 

 to its author, 5. perlaxa bears a resemblance to 5. geniculata 

 Massal., a species which Arnell 36 considers a synonym of S\ 

 helvetica Gottsche and scarcely distinct from the widely dis- 

 tributed >S\ irrigua (Nees) Dumort. The distinctive features 

 emphasized by Warnstorf are the rounded and entire leaf- 

 lobes, the hydrophytic habit, the distant leaves, and the long 

 flagelliform branches. The implied absence of trigones in the 

 leaf-cells might seem to indicate an approach to 5. undulata, 

 but further studies are clearly necessary before the relation- 

 ships of the species are adequately established. 



38. Scapania subalpina (Nees) Dumort. 



First recorded from California by Miiller, 37 the following- 

 two stations being cited : Yosemite Valley, bank of the Merced 

 River, H. N. Bolander, and Sierras, June, 1864, \V. H. 

 Brewer. It is now possible to report the species from three 

 additional localities, namely: "wet bank of stream flowing- 

 out of Deer Lake, Sierra County, 6950 ft. alt.," Mrs. Sutliffe ; 

 Horse Corral Hill and East Fork of Clover Creek, Tulare 

 County, F. J. Coulter. 



""Schwedish. Art. Diplophyllum u. Martinellia 37. 1922. 

 "'Nova Acta Kais. Leop. -Carol. Akad. Naturf. 83: 69. 1905. 



