88 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Heller. James Isl. : Hill of the Ilassler Exp. (in lib. Tuckerraan as 

 R. tinctoria). Skymouu Isl, : south, May, 1899, Snodgrass & Heller. 

 Fuither ilistrib. Peru (a specimen in hb. Farlow cull, by Guudichaud 

 and distrib. as R. tinctoria, f. dichotoma). 



R. intricata, C. E. Cummings in Rob. «& Greenm. (1), 149, coll, by 

 Baur upon Charles Island, has the cortex of Roccella proper and there- 

 fore cannot be placed in Roccdlaria where R. intrlcata properly 

 belongs but is a narrow form of R. x>eruensis. The same may be said 

 of some, but perhaps not all, of the R. pUycopsis, Hassler Exp, \_Hiir\ 

 from the Galapagos Islands in herb. Tuckerman, 



Sticta, Schreb. 



S. Weigelii, Wainio, Lichens du Bresil, i. 189 (1890). S. damae- 

 cornis, var. Weigelii, Ach. Lich. Meth. 446 (1810). — Albemarle Isl. : 

 Iguana Cove, 30 Dec. 1898, Snodgrass & Heller. This is the S. 

 quercizans, common throughout the warmer parts of America. 



Teloschistes, Norm. 



T. FLAViCANS, Norm. Gen. Lich., 17, 1852, T. chrysopthalmus, var. 

 Jlavicans, Auct. ; C. E. Cummings in Rob. & Greenm, (1), 149, 

 Lichen Jlavicans, Sw. Prodr, 147 (1788), Erernia flacicans, var. 

 crocea, Anderss. (1), 123, & (2), 35. — Albemarle .Isl. : Snod(/i-ass 

 & Heller. CnAUL^slsL,.: Andersson; Snodgrass & Heller. Chatham 

 Isl.: Baur, ace. to C. E. Cummings, I.e. Dc^XAN Isl.: Snodgrass & 

 Heller. Further distrib. general, 



USNEA, Dill. 



U. ARTHROCLADA, Fee, Ess. Crypt. Ecorc. xcvii, & ci. 3, f, 4, 5 (1824), 

 — Narborough Isl,: southern part, alt, 615 m,, 5 April, 1899, on 

 palo sanio trees (Bursera graveolens) with Bamalina nsneoides, Snod- 

 grass & Heller. Further distrib. Brazil, 



This has a habit resembling JJ. longissima but stouter, AYith potash 

 the medulla turns reddish brown, and this fact with the hard and 

 polished cortex often breaking and forming articulations indicates 

 U. arthroclada. 



U. CERATiNA, Ach. Lich. Univ. 619 (1810), U. barbata, Ach. f, 

 ceratina Schaer, Spec. 505 (1840), — Narborough Isl. : Snodgrass & 

 Heller. Cosmopolitan. 



U. PUCATA, Ach. Syn, Meth, 305 (1814) ; Hook, f, (3), 164 ; Anderss. 



