— 54 — 
1 8. Usnea fasciata Torr. 
“rocks of New South Shetland.” (Arrfer. Jour. Sci. 6: 106. 1823.) 
“thallo pendulo scabriusculo tereti glauco irrescente ramosissimo, ramis 
rectis nigro-fasciatis quasi articulatis ramulis ultimis capillaceo-attenuates 
fibrillis lateralibus nullis cephalodiis sparsis hemisphericis atris.” 1. c. 
19. Usnea barbata var. fastuosa Mull. Arg. 
“Punta de Pique.” Argentina. (Flora 72 : 509. 1889.) 
“rami primarii validi, elati, varie ramosi varieque papillosi v. sublaeves 
ramillis rigide flaccidis, varie patulis et curvatis, apice nigratis et concoloribus 
numerosis praediti; tota flavida, rigidula.” 1. c. 
Type in the Boissier Herbarium, Chambesy. 
20. Usnea trichodea f. firma Kremphl. 
“Brazil.” (Lich. Brasil II. 1876.) 
“Thallus flavescens, glaber, ramis typo crassioribus minus fibrillosus. 
Thallus subtus vel ad basim (scilic. ad ramos primarios) diam. ad usque 1.7 
mm.” 1. c. 
21. Usnea barbata var. strigosa stat. j err uginascens Miill. Arg. 
“Congonhas do Compo.” Brazil. (Hedw. 30 : 224. 1891.) 
“tota aut saltern partes crassiores plus minusve ferrugineo-tinctae.” 1. c. 
Type in the Boissier Herbarium, Chambesy.' 
22. Usnea flexuosa Tayl. 
“Near Quito.” (Hook. Lond. Jour. Bot. 6: 192. 1847.) 
“thallo pendulo, implexo, cinereo, filiformi, ramosissimo, subnoduloso, 
ramis brevibus, flexuosis; gemmis minutis, granulatis; apotheciis concoloribus, 
tenuissimis, planiusculis, pruinosis, margine ramoso-ciliatis.” 1. c. 
= Us. plicata var. flexuosa (Tayl.) Miill. Arg. (Flora 71: 21. 1888.) 
23. Usnea strigosella var. furfurosula Zahlbr. 
“Trino,” Brazil. (Bull. Herb. Boiss. 8: 467-468. 1908.) 
“Ramis (exceptis ultimis) plus minus furfuraceis vel subpulverulentis, 
Caeterum cum typo quadrat. Thallus pendulus, usque 15 cm. longus, mollis.” 
1. c. 
In the K. K. Naturhistorisches Hofmuseum, Vienna. 
24. Usnea barbata var. dasypoga stat. fusco-rufa Miill. Arg. 
“Maritimis Itajahy,” Brazil. (Hedw. 30 : 225. 1891.) 
“tota fusco-rufa.” 1. c. 
Type in the Boissier Herbarium, Chambesy. 
25. Usnea laevis var. glacialis Zahlbr. 
“Chimborazo, [Ecuador] .... von 4000-4800 m.” (Beiht. Bot. 
Centrbl. 19 pt. 2 : 83. 1905.) 
“Thallus dense ramosus, ramis intricatis, in parte superiore soralibus ele- 
vatis, caesio-cinereis vel caesio-cinerascentibus, plus minus confluentibus sat 
dense obsitus. Thallus usque 6 cm. altis; stratum myelohyphicum KHO e 
lento ferrugineum, I-.” 1 . c. 
In the K. K. Naturhistorisches Hofmuseum, Vienna. 
26. Usnea barbata f. glaucescens Kremphl. 
“prope Oran, Argentina.” (Flora 61 : 436. 1878.) 
“ Apotheciorum disco glauco.” 1. c. 
