U. florida (L.) Web. 
Thallus caespitose (8 cm. alt.), virescent, branches terete, verrucose, - 
fibrils stipate, subequiform. Apothecia discoid, ciliate, terminal, disk buff. 
Spores 4 — 84 X 3—6y. On trees ° 
Wer florida fyeehinta: = (Clos)e Ach: 
Branches and fibrils terminally sorediate. Apothecia reduced or 
wanting. On trees. 
U. florida f. rubiginea Michx. 
Like the last: Thallus tinged with reddish. 
U. trichodea Ach. 
Thallus pendulous (12 cm. alt.) virescent, branches terete, smooth, 
fibrils capillaceous, tortuous. Apothecia unobserved.* On trees. 
GENUS: LETHARIA (Th. Fr.) Zahlbr. 
Cortex subterete to bifacial, medulla arachnoid, axis with chond- 
roid filaments. Apothecia entire or ciliate, disk dark. Asci clavate, 8 
spored. Spores ellipsoid, monoblast, hyaline. ‘ 
L. thamnodes (Flot.) Hue. 
Thallus caespitose (8 cm. alt.), virescent, branches subterete or 
deformed, evolute, scurfy. Apothecia unobserved. On trees and old 
wood. 
* All remarks apply to local material. 
(To be continued.) 
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