1904] Evans, — Notes on New England Hepaticae, — II 189 



tilized flowers than on those with well developed perianths. Of 

 later figures those published by Stephani ^ and Miiller- bring out the 

 characters pretty clearly. Pearson,^ however, describes and figures 

 the bracts as "bidentate" with the "segments ciliate-dentate, acu- 

 minate " ; but, as these figures of the bracts are all drawn from 

 North American specimens collected by Oakes in the White Moun- 

 tains, it is hardly to be doubted that they represent L. syh'atica 

 instead of the true L. setacea. It is also probable that Austin had 

 no American material of L. setacea before him when he rejected 

 Hooker's figures. Fertile material of Z. sylvatica may be at once 

 distinguished by the perichaetial leaves, some if not all of which will 

 show the bifid character. 



In the ciliate mouth of the perianth the two species agree with 

 each other but differ from the recently described L. trichoclados C. 

 Miill. Frib.,* in which the mouth is minutely denticulate. />. tricho- 

 clados is now known from several widely separated localities in Europe 

 and is perhaps to be expected in North America. It is a fragile spe- 

 cies and is hardly to be distinguished in sterile condition from slen- 

 der forms of Z. setacea. It is remarkable, howeyer, for its short and 

 delicate bracts, which are ovate in outline, slightly bidentate at the 

 apex and irregularly denticulate in the upper part. Z. trichoclados 

 is also noteworthy because it matures its capsules in November ; in 

 the other two species these are matured in May or June. 



12. ScAHANiA coNVExui,A C. Miill. Frib. Bull, de I'Herb. Boissier, 

 II. 3 : 42. 1903. Mt. Katahdin, Maine {E. D. Merrill^, the type- 

 locality. 



13. ScAPANiA PALUDOSA C. Miill. Frib. /. c. 49.//. I ■ S. undulata, 

 var. paludosa C. Miill. Frib. Beih. zum Bot. Centralbl. 10 : 220. 

 1 90 1. Tuckerman's Ravine and Mt. Pleasant, White Mountains, 

 New Hampshire {A. W. E.) ; Mt. Mansfield,. Vermont {A. IV. E.) ; 

 Magnolia, Massachusetts {W. G. Farhui). 



The two species just noted are fully described by Herr Miiller. 

 S. paludosa is by far the commoner of the two and has a wide dis- 

 tribution in Europe, especially in subalpine regions ; S. convexuia, 

 on the other hand, is known from the type-locality only. Both spe- 



1 Ber. d. botan. Vei. zu Landshut, 7: /. 8j. 1S79. 



2 Hedwigia, 38: //. S,f. 14-16. 1S99. 



^ Hep. Brit. Isles, 12^. pi. 46, f. 13-17- 1900. 

 * Hedwigia, 38: 197.//. 8.,/. i-ij. 1899. 



