—62— 



sense than heretofore,^ one result being that L. pililoha would now have to be 

 excluded from it. On the whole it would perhaps be wisest for the present to 

 retain both L. pililoha and L. spiniloha in the genus Lejeunea. 



8. MiCROLEjEUNEA RuTHii Evans, Mem. Torrey Club 8: i6i. pi. 21, 

 /. ii~ig. 1902. 



Collected in September, 1910, in the vicinity of Highlands, North Carolina, 

 on the bark of hemlock and Kalmia, by A. H. Graves. Heretofore known only 

 from Big Frog Mountain, Tennessee, the type locality. Most of the North 

 Carolina material represents a juvenile condition of the plant, in which some 

 of the specific characters are not clearly manifested. On many of the shoots, 

 for example, the lobes of the leaves are only a little longer than the lobules, 

 and the divisions of the underleaves are only two cells wide at the base. For- 

 tunately a careful search brought to light several stems in which the lobes were 

 about twice as long as the lobules, while the divisions of the underleaves were 

 four cells wide at the base, agreeing in these important respects with typical 

 forms of the species. If it had not been for the presence of these better devel- 

 oped plants the determination of the specimens would have been doubtful,, 

 since the juvenile conditions of the various species of Microlejeunea sometimes 

 approach one another very closely. The plants growing on hemlock were ac- 

 companied by Frullania Asagrayana Mont., a sterile Radula, and a poorly de- 

 veloped Plagiochila. 



9. Brachiolejeunea densifolia (Raddi) Evans, Bull. Torrey Club 

 35: 158. 1908. 



In Spruce's account of the Hepaticae collected by W. R. Elliott on the is- 

 lands of St. Vincent and Dominica, he cites the present species, which is commonly 

 called B. hicolor (Nees) Schiffn., from Fancy Farm, St. Vincent, basing his re- 

 cord on a portion of No. 343.^ In examining the material preserved under this 

 number in the herbarium of the British Museum the writer found only B. cor- 

 ticalis (Lehm. & Lindenb.) Schiffn., a species which Spruce does not list at all. 

 Apparently he confused the two species, which certainly resemble each other 

 in many respects. There is therefore no adequate evidence that the true B. 

 densifolia has been collected in the West Indies, since the specimens collected 

 by Wright in Cuba and distributed in the Hepaticae Cubenses under the name 

 Phragmicoma hicolor clearly belong to B. insularis Evans. ^ There still remain, 

 however, a few North American records for the species, based on specimens 

 collected in Mexico, and some of these at least appear to be correctly determ- 

 ined. In South American B. densifolia is widely distributed. 



ID. Ptychocoleus torulosus (Lehm. & Lindenb.) Trevis. 



This South American species, also, is reported by Spruce from Fancy Farm, 

 St. Vincent, under the same number as the preceding species. In the British 



1 Bull. Torrey Club 33: i. 1906. 



2 Jour. Linn. Soc. Bot. 30 : 336. 1894. 



3 Bull. Torrey Club 35: 159. pi. 6. 1908. 



