134 Alexander W. Evans, 



of the same nature. His figure of an ultimate branch, however, 

 shows the wings clearly and his figure of an axial cross section in 

 Aneura umhrosa is equally distinctive. 



The name "Aneura endiviae folia" was given by Stephani to 

 specimens from Desolation Island collected by Dusen, and a speci- 

 men so named is in the herbarium of the New York Botanical 

 Garden, In his published account of Dusen's collection (29) this 

 name does not appear, but A. crispa is listed from the island in 

 question. In all probability Stephani recognized the fact that A. 

 endiviae folia was a synonym of A. crispa and therefore made no 

 formal mention of his species. Meanwhile Goebel (11, p. 279, /. 

 7/(5 ) had published an excellent figure oi A. endiviae folia with a 

 brief description of the thallus. Unfortunately he gave no author- 

 ity for the name ; neither did he tell us where his material came 

 from. His figure represents the apical portion of a vigorous thallus 

 and, taken in conjunction with his description, shows pretty clearly 

 that it was drawn from A. crispa. The writer therefore feels 

 justified in assuming that Goebel's A. endiviae folia was the same 

 as Stephani's and that Goebel's figure was drawn from Dusen's 

 material. 



6. Riccardia calva (Schiffn. &. Gottsche) comb. nov. 



Aneura calva Schiffn. & Gottsche in Schiffner, V., Forschungs- 



reise "Gazelle" 4^ : 42. pi. 8, f. 16. 1890. 



Specimens examined: Tuesday Bay, Straits of Magellan, 

 1876, Naumann (S., Y., type of Aneura calva). Known only 

 from the type locality. The specimen collected by Hatcher on 

 Tierra del Fuego and cited under A. calva by the writer (9, p. 

 410, and 10, p. 38) is now referred to Riccardia spectabilis. 



At first sight R. calva looks as if it might be a small form of 

 R. Savaticri, but a careful comparison brings out numerous dis- 

 tinctive features. It is quite impossible to determine the general 

 habit of the species from the specimens examined. In all proba- 

 bility the thalli are prostrate ; at the same time neither rhizoids 

 nor distinct stolens have been observed, so that the plants can 

 not be closely adherent to the substratum. They apparently occur 

 in loose tufts without much admixture and are brown or yellowish 

 brown in color, becoming darker with age. 



The main axis is rigid and exhibits indefinite or at least lonsr- 



