404 87.Usnea. 3. HOMOTHALAME. Pl. cell. aph. 
y- hirta. Thallus slightly upright, rather shrublike, yel- 
lowish grey, much branched, rather powdery, roughish ; 
branches much divided, bent, intricate, slender, fibrelike. 
3. Usnea barhata. Bearded usnea. 
Thallus hanging, smooth, round, rather thick, pale 
greenish grey; lranches diverging, frequently fibrelike, hair- 
like at the tip, beneath jointed. 
Lichen barbatus, Lin. Sp. Pl. 1622; Engl. Bot. 258, fig. 2. 
Usnea barbata, Achar. Meth. Lich. 315 ; Lich. Univ. 624, 
Qn the branches of old trees. 
@. articulata. Thallus bald, grey, branches long, forked, 
branched, jointed; joints bellied, separate; last twigs hair- 
like, fibrelike. 
Lichenoides quod Muscus arboreus nodosus, Raii Syn. 65, 4. 
Usnea barbata articulata, Achar. Lich. Univ. 605. 
Lichen articulatus, Lin. 8. P. 1623; Engl. Bot. 258, fig. 1. 
C. RamauinipEx. Thallus cartilaginous, branched ; 
inside stuffed with fibres like tow; apotkecta same colour 
as the thallus, formed entirely from it. 
IX. 88. CORNICULARIA. Horn-moss. 
Thallus cartilaginous, rather solid inside, towlike, 
branched, shrublike; apothecia orbiculate, terminal, oblique, 
shieldlike, entirely formed of the thallus, similar to its outer 
surface, become convex and rather inflated ; edge scarcely 
distinct, slightly toothed, at length turned back, slightly 
altered in colour. 
1. Cornicularia tristis. Dull horn-moss. 
Thallus pitch-black, compressed, cylindrical, rather 
smooth, 2-rowed, 2-forked; branches even-topped, black 
above; apothecia plano-convex, brownish black, slightly 
margined, edge not toothed, not cut. 
Coralloides corniculatum, fuci tentioris facie, Dillen Musc. 118. 
Lichen radiatus, Huds. Fl- Angl, 559; Dicks. Crypt. 9, 25. 
Lichen fucoides, Wulf. in Jacg. Coll. 3, 
Lichen corniculatus, Lizhif. Fl. Scot. 385. 
Lichen rigidus, Wulf. ia Facg. Coll. 2, 
Lichen tristis, Engl. Bot. 720, 
Lobaria rigida, Hoffm. Germ. 142, 
Cornicularia tristis, Achar. Meth. Lich. 300; Lich. Univ. 610. 
On rocks. . 
Apothecia sometimes radiately toothed, and the branches 
tuberculated, toothed. 
