PARMELIA. | PARMELIEI. 247 
Sm. Eng. Bot. xxix. (1809) t. 2050.—Brit. Evs.: Larb. Lich. Hb. 
n. 8. : 
Often confounded with smaller states of P. levigata, to which it is 
closely allied, but is distinguished not only by the reaction with K, and 
the larger spores, but also, and at first sight, by the yellow thallus, which 
is usually smaller, more divided, and somewhat closely affixed to the 
substratum. The apothecia are extremely rare in our Islands, and 
when present are but few and central. 
Hab. On trunks of trees and boulders in maritime upland districts.— 
Distr, Rather local and very sparingly in S. and W. England, N. Wales, 
S. and W. Scotland, W. Ireland, and the Channel Islands——B. M.: 
Island of Guernsey. Bournemouth, Hampshire ; Ullacombe, Devonshire ; 
Barmouth, Ty Gwn, near Dolgelly, Merionethshire; Island of Anglesea. 
Brodrick Castle, Island of Arran; Appin, Argyleshire; Glen Nevis, 
Inverness-shire; Applecross, Ross-shire. Near Macroone, co. Cork; 
Cromaglown and Dunkerron (fruit), co. Kerry ; Connemara, co. Galway. 
16. P. dissecta Nyl. Flora 1882, p. 451.—Subsimilar to P. 
levigata, but the thallus yellowish, much smaller and thinly-dis- 
sected, isidiiferous, with short rhizine on the under surface (me- 
dulla K(CaCl)+red). Apothecia unknown.—Cromb. Grevillea, xv. 
p. 74. 
This also is closely allied to P. levigata, to which Nylander (Syn. i. 
p- 384) originally referred it as a variety. It has been raised by him to 
specific rank because it constantly preserves its own type. I have not 
seen a British specimen; according to Nylander it is not unfrequent in 
France. 
Hab. On rocks in(?) upland situations.—Distr. Extremely local and 
rare in Ireland (fide Nyl.). 
17. P. conspersa Ach. Meth. (1803) p. 205.—Thallus orbicular, 
expanded, appressed, laciniato-divided, shining, somewhat smooth, 
greenish-straw coloured; beneath brown, with short black rhizine ; 
lacinie plane sinuato-incised and crenate at the margins 
Cau then red, C2C1_). Apothecia moderate, spadiceous or 
brownish, the margin entire and inflexcd; spores 0,008-12 mm. 
long, 0,005-8 mm. thick.—Gray, Nat. Arr. i. p. 442; Hook, Fl. 
Scot. ii. p. 55; Sm. Eng. Fl. v. p. 199; Tayl. in Mack. Fl. Hib. ii, 
p. 143; Madd, Man. p. 102; Cromb. Lich. Brit. p. 34; Leight. 
Lich. Fl. p. 184, ed. 3, p. 124.—Lichen conspersus Ehrh. in Ach. 
Prodr. (1798) p. 118; Eng. Bot.t.2097. Lichen centrifugus Huds. 
Fl. Angl. p. 445; Lightf. Fl. Scot. ii. p. 814; With. Arr. ed. 3, iv. 
p- 82 pro parte. Lichenoides embricatum viridans, scutellis badiis 
Dill. Muse. 180, t. 24. f. 75 a.—Brit. Evs.: Leight. n. 78; Larb. 
Cesar. n. 65; Cromb. n. 26. 
Often spreads rather extensively, though always preserving an orbi- 
cular outline. It is occasionally somewhat glaucous, and specimens rarely 
occur in which the medulla is partly tawny-yellow, the result evidently 
