20 The Ottawa Naturalist. [April 



sional but rare occurrence. According to my own experience 

 the compressed perianth is a very constant feature of the 

 species. The perig^onial bracteoles of L. Rutheana are some- 

 times, but not always, shorter than the ordinary underleaves. 



:o LoPHOZiA Kaurini, (Limpr. ) Steph. Bull, de I'Herb. Boissier, 

 II. I : 1 147. igoi. 



Jungermannia Hornschuchiana paroica, Ekstrand, Bot. Notis. 

 1879 : 36. 



Jungermannia [Lophozia) Kauriniy Limpr. Jahresb. Schles. 

 Gesell. vaterl. Cultur, 61 : 204. 1884. 



Jungermannia Muelleri, forma paroica^ Bernet, Cat. H6p. 

 Sud-Ouest de !a Suisse, etc. 68. PL j. 1888. 



Hunker Creek (44 ^./>., 49, 63). New to America. Pre- 

 viously known from Norway, Switzerland and Siberia. 



Limpricht's description of L. Kaurini and the beautiful 

 figures published by M. Bernet give so clear an idea of the 

 species that only its more important characters will be alluded 

 to here. It agrees with L. Rutheana in its paroicous inflor- 

 escence, in its bifid leaves and in the possession of under- 

 leaves. It is, however, less robust and shows little or no 

 trace of purplish or reddish coloration. The lobes of its leaves 

 are rounded to acute and on slender shoots are not infre- 

 quently apiculate ; the sinus is broad, varying from obtuse to 

 lunulate. According to Limpricht obtuse or rounded lobes 

 are to be regarded as the more typical, but acute lobes are 

 about as frequent in the Yukon material. In most cases the 

 lobes are subequal in size, but sometimes the postical lobe is 

 slightly the larger and in such cases tends to be blunter also. 

 The leaf-cells are somewhat smaller than in L. Rutheana, aver- 

 aging 0.035 X 0.025 "irn- i" the middle of the leaf; the trigones 

 also are less conspicuous, but the cuticle is similarly striate- 

 verruculose. The underleaves are small and are commonly 

 undivided ; they vary from subulate to lanceolate and end in 

 a long attenuate point. Sometimes an underleaf will bear 

 one or two short marginal teeth or occasionally a longer 

 tooth near the base. 



