Note: In a collection of Concord lichens collected by Horace Mann, 
which has recently come into my hands, is a specimen of Usnea angulata 
Ach. The following should therefore be added to the foregoing paper, as 
well as the table below which will hereafter be published with each 
genus: 
U. angulata Ach. 
Thallus pendulous (8cm. alt.), virescent, branches angular, smooth, 
simple, fibrils stipate, subequiform. Apothecia unobserved. On trees. 
TABLE OF DISTRIBUTION. 
The sign + indicates that an herbarium specimen has been seen; the 
sign — that a reliable printed record has been found. 
Me. N. H. Vt. Mass. R. I. Conn. 
Usnea longissima Ach. 
angulata Ach. + 
plicata (L.) Web. 
plicata v. Huei (Boist.) Howe 
(=ceratina f. subplicata Merr.) aE + 
barbata (L.) Web. (= dasypoga 
(Ach.) Nyl.) 
barbata v. stricta (Schaer.) Howe 
( = dasypoga v. plicata (Hoffm.) Hue + — 
florida (L.) Web. { i 
floridas £-- hirta=-Ch2s — Ach: + + + 
trichodea Ach. _ | - 
trichodea v. ciliata Mull. Arg. + 
Letharia thamnodes (Flot.) Hue |. 
32 
