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THE USNEAS OF THE WORLD, 1752-1914 
With Citations, Type Localities, Original Descriptions, and Keys 
Part II. — South America 
R. Heber Howe, Jr. 
To gather together the material for the present part has been no small task, 
and if through inadvertance any species have been overlooked the author earnestly 
hopes his attention will be called to the omissions. The former Part I of the 
present paper was published in the Proceedings of the Thoreau Museum of 
Natural History I: 15-25. 1913. So many requests have been received for 
it that it has been thought well to publish the future parts in a more widely 
known and accessible medium. Part I, North America, can be secured by ad- 
dressing the author. 
List of Usneas Described from South America 
1 . Usnea 
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Hieronymi var. adusta Kremphl. 
barbata var. amblyoclada Mull. Arg. 
melaxantha var. angulosa Mull. Arg. 
(. Neuropogon ) antennarius Nees & Flot. 
arthrocladon Fee. 
(. Parmelia ) coralloides, aspera Eschw. 
arthrodada var. aspera Mull. Arg. 
bogotensis Wain. 
Bornmuelleri var. brasiliensis Zahlbr. 
Ceruchis Montg. 
{Lichen) Cinchonae Willd. 
cladocarpa Fee. 
concinna Strtn. 
concreta Montg. 
coralloides Wallr. 
florida f. dasycera Nyl. apud Crombie. 
densirostra Tayl. 
barbata var. mollis f. denudata Wain. 
fasciata Torr. 
barbata var . fastuos a Mull. Arg. 
trichodea f. firma Kremphl. 
barbata var. strigosa stat. ferruginascens Mull. Arg. 
flexuosa Tayl. 
strigo sella var. furfur osula Zahlbr. 
barbata var. dasypoga stat. fusco-rufa Miill. Arg. 
laevis var. glacialis Zahlbr. 
barbata f. glaucescens Kremphl. 
cornuta var. gracilescens Jatta. 
