-56- 



already been reported in New England from New Hampshire and Massachu- 

 setts.^ It is known also, in North America, from Greenland, Alaska, and 

 British Columbia, and is widely distributed in Europe. 



3. Sphenolobus scitulus (Tayl.) Steph. Bull, de I'Herb. Boissier II. 

 1: 176. 1902. Jungermannia scitula Tayl. Lond. Jour. Bot. 5: 274. 1846. 

 Diplophylleia exsectcBformis (Breidl.), var. cequiloba Culmann, Rev. Bryol. 32: 

 , 73. /. 1-8. 1905. Sphenolobus exsectiformis, var. cequiloba Culmann; C. 

 Miill. Frib. Rabenhorst's Kryptogamen-Flora 6: 611./. 2C)6. 1910. (Figures 

 1-5.) 



Collected on earth, by A. H. Brinkman, at two stations in British Columbia, 

 namely: Cougas Lake, Nicola River, July, 19 10 (No. 24Q), altitude 4400 feet; 

 and Tetachuck Lake, October, 191 1 (No. 128), altitude 3250 feet. Both speci- 

 mens are gemmiparous and the second shows weathered perianths. Sphenolobus 

 scitulus is a species which has not been very widely accepted by writers. It 

 was originally described from gemmiparous but otherwise sterile material col- 

 lected by Drummond in North America, nothing more definite about the type 

 locality being stated. In all probability it was somewhere in western Canada. 

 In 1873 Austin'^ reduced the species to synonymy, including it under Scapania 

 exsecta (Schmid.) Aust., now known as Sphenolobus exsectus (Schmid.) Steph. 

 Pearson^ accepted Austin's opinion and regarded Jungermannia scitula as a 

 form of J. exsecta Schmid. in which the leaves were more uniformly tridentate 

 than in typical European specimens. At that time (1890) /. exsecta was de- 

 fined in a rather broad sense and included not only the 5. exsectus of later writers 

 but also S. exsectceformis (Breidl.) Steph., a species porposed by Breidler in 1894, 

 under the name of J. exsectceformis.^ In 1902 Stephani placed the genus Sphen- 

 olobus upon a definite basis and recognized 6". scitulus as a species, as well as 

 5. exsectus and S. exsectceformis. The only specimens which he ci ed under 5. 

 scitulus were the original plants of Drummond. At about the same time, how- 

 ever, Macoun^ listed several Canadian plants under the name Lophozia exsecta, 

 var. scitula (Tayl.) Pears., stating that the variety was scarcely distinct from 

 the type. Whether these specimens represent the Sphenolobus scitulus of the 

 present paper has not yet been determined. When Culmann published his 

 variety cequiloba he intimated that he considered it a distinct species, and Miiller 

 states that this view may be correct, although he prefers to regard the plant as 

 a variety until more is known about it. Miiller cites only three European 

 stations, two of which are in Switzerland and the third in Bulgaria. In study- 

 ing Brinkman's specimens the writer had the privilege of comparing them with 

 a portion of the type of /. scitula from the Taylor herbarium and also with a 



1 See Evans, Rhodora 9: 57- 1907. A full synonymy of the species is given here. 



* Hep. Bor.-Amer. 21. 1873. 



^ List Canadian Hepat. 21. 1890. 



Mitth. d. Naturw. Ver. Steiermark 30:321. 1894. 

 ^ Cat. Canadian Plants 7: 23. 1902. 



