BRYOLOGICAL NOTES ON A TRIP IN NORWAY. 107 



one another and from the type by a fairly well marked tout 

 ensemble of characters. Two of these at least, which find names 

 in Dr. Best's Revision as P. radicosa (Mitt.) Lesq. & James, 

 and P. rigescens(WiLS.) Lindb. {^Ps. stenophylla. Ren. & Card.), 

 are European and Scandinavian plants, both of which we gathered 

 during our visit, and it is principally in connection with these and 

 to draw the attention of European bryologists to them, that these 

 remarks have been made. 



P. radicosa Lesq. & James differs from the typical European 

 plant in the paler, brighter green colour, often yellowish green, 

 seldom blackish, the more robust habit, larger less falcate leaves 

 and branches, and the larger, more pellucid cells, much less 

 strongly papillose and frequently practically smooth. I have 

 little doubt, from an examination of the leaves of the type spe- 

 cimen 0Î Leskea hrachyclados Schwgr. from Herb Boissier, 

 a slide of which was kindly lent me by Dr. Best, and from 

 his description of the plant, that he is quite justified in conclu- 

 ding that Schwaegrichen's plant and H. radicosum Mitt. [Ps. 

 radicosa Lesq. & James) are practically identical. The plant 

 which LiMPRicHT describes as P. atrovirens var. brachyclados 

 Dr. Best considers to be a different plant from Schwaegrichen's. 



Ps. rigescensLmBB. is allied to and perhaps connected with 

 P. radicosa, but is on an altogether smaller scale. The whole 

 plant is more slender, and the leaves are not only smaller but 

 distinctly narrower in outline with a longer acumen, the cell 

 structure similar, the capsule smaller, suberect and almost straight, 

 the segments of the inner peristome narrow linear instead of 

 oblong-lanceolate as in Ps. radicosa. 



We gathered Ps. radicosa in three localities, viz. fruiting 

 on a stone wall by the roadside at Seljestad, and also near the 

 Maristuen Hotel; and sterile on boulders below the Buarbrae 

 glacier, Jordal, near Odde. Specimens from the first named 

 locahty have been submitted to Dr. Best, who while admitting 

 our plant to be identical with the American P. radicosa, points 



