156 Alexander W. Evans, 



these tend to be somewhat simpler than those on the vegetative 

 axes but nevertheless make it difficult to demonstrate the other 

 features of the inflorescence. So far as the writer could determine 

 from the scanty material studied, the wings are suberect and only 

 one cell wide, and the openings into the antheridial chambers are 

 separated by a single row of cells. 



The very short female branches arise directly from the main 

 axis and here again the dense appendicular covering obscures the 

 structure of the protective parts. In one instance a few leaf-like 

 lobes with spinulose margins and surface and a length of six or 

 seven cells could be distinguished. This agrees on the whole with 

 Stephani's account (27, p. 738), which describes the margin of the 

 branch as "longe lobati, lobis foliaceis bipinnatim spinosis." The 

 largest "calyptra" seen was 1.5 mm. long and 0.6 mm. wide. At 

 the tip was a distinct corona with short and irregular blunt out- 

 growths ; the remaining surface bore short and relatively simple 

 spinulose outgrowths in the upper part and rounded outgrowths 

 toward the base. 



The account just given adds but little to the descriptions already 

 published by Massalongo, Schiffner and Stephani. The last author 

 compares the species to a Lepidozia in its appearance and designates 

 the appendages as "paraphyllia." This term would of course be 

 appropriate if we regarded the thallus of Riccardia as a leafy stem 

 which had lost its leaves. If, however, the thalloid condition is 

 regarded as primitive the term becomes less applicable. In the orig- 

 inal account oi R. spinnUfcra Massalongo separates, under the 

 name "p, scahrifrons" , a plant from Basket Island, in which the 

 appendages are said to be less manifest and more appressed. This 

 form, which is not mentioned by either Schiffner or Stephani, is 

 quite unknown to the writer. 



14. Riccardia conimitra (Steph.) comb. nov. 

 Anetira conimitra Steph. Bull. Herb. Boissier 7: 749. 1899. 



Specimens examined: on rotten logs, Guaitecas Islands, 

 western Patagonia, 1897, Diisen 403 (U., type of Ancura conimi- 

 tra) ; Port Corral, 1905, Tha.vtcr ^^f^ in part (H., Y.). 



The following additional station may be cited from the literature : 

 Chiloe Island, Skottsbcrg (32, p. 6, as Ancura conimitra). 



