( I2 3) 



places. The outer plates of the teeth are often nearly square 

 and up to .020 mm. high. The lamellae, about 16, are 

 usually connected below by cross walls, not more than one, 

 however, between adjoining lamellae. The spores in these 

 specimens measure up to .028 or .030 mm. Upper leaf-cells 

 large, up to .025 by .070 mm. 



Br yum Brownii B. & S. ? [Pohlia bryoides R. Br. ?) 

 Dawson, on earth about ledges of rock. There seems to be 

 some confusion with regard to this plant. My specimens are 

 called a variety, " filiferum " by M. Philibert, but they are 

 scarcely or not longer pointed than is shown in Fig. 8a, Tab. 

 Supp. I, IV., Bryo. Eur. The peristome as figured in this 

 plate, also, as far as it goes, rather agrees with my speci- 

 mens, viz., the lamellae are not very numerous (14 to 16) or 

 close together and the outer plates are comparatively high. 

 This does not agree with Limpricht's description, who states 

 that the lamellae are numerous and close together and basal 

 plates narrowly rectangular (1 to 4), also that the costa of the 

 leaf is excurrent into a short awn. In the Dawson specimens 

 the 14 or 15 lamellae are joined by 1 to 3 thick cross walls be- 

 tween the adjacent lamellae and the outer plates are from 

 twice wider than high to nearly square. In a packet in the 

 Columbia Herbarium, are European specimens called Brown// 

 from Chr. Kaurin, but the lamellae are not connected by 

 vertical walls and the plants are otherwise different so that 

 they certainly are not Brownii. The same may be said of 

 Bourgeau's specimens of " The Palliser N. A. Expedition ; 

 that is, unless true Brownii belongs to a section that does no 

 have the lamellae connected by cross walls as in fendulum. 

 The Dawson specimens are synoicous and antoicous, leaf 

 border of one layer of cells not more thickened than within, 

 spores roughened, up to .028 mm., leaf-cells below sometimes 



pitted (581). 



Since writing the above Mrs. Britton has received a letter 

 from Ernest S. Salmon, in which he gives good reasons for 

 believing that the type of Pohlia bryoides R. Br., is not in 

 existence. Taking, then, Schimper's figures in the Bryologia 



