200 CYCLOCARPINE® /PLACODIUM 
4. Pl. elegans DC, Fi). Fr. ii. p. 379 (1805).—Thallus radiate- 
stellate and normally orbicular, formed of subdiscrete narrow 
elongate laciniz, branched, torulose and crenate at the apices. 
orange or dark orange-red, paler below (K+ purplish). Apothecia 
rather small, nearly plane, concolorous, the margin entire ; spores 
ellipsoid or ovoid, 11-16 p long, 6-9 p» thick.—Mudd Man. 
p. 131, t. 2, fig. 41; Cromb. Lich. Brit. p. 45; Leight. Lich. FI. 
p- 178; ed. 3, p. 163. Lichen elegans Link in Ann, Naturg. i. 
p. 37 (1791). Leeanora elegans Ach. Lich. Univ. p. 435 (1810) : 
Hook. Fl. poe iil. p. 50; Cromb. in Grevillea xvi. p. 44 (1889) 
& Monogr. i. p. 358. Squamaria elegans Hook. in Sm. Engl. 
Fil. -v.-p. 195 ( 1833) pro parte. 
ap by the non-contiguous narrow deeply coloured 
lacinie. It is an alpine or northern ‘plant very rare in this country ; 
the British citations may possibly refer to some other species. The 
thallus is corticate on both surfaces and loosely affixed, so that it is 
easily detached. The spores vary from being broadly ovoid to 
ellipsoid. 
Hab. On granite rocks in alpine situations.—Distr. Sparingly 
among the Grampians, Scotland.—B. VW. Loch-na-gar and Cairngorm. 
Aberdeenshire. 
Var. tenue Nyl. Lich. Scand. p. 137 (1861).—Thallus much 
alae the lacinie narrow and scattered. Apothecia small.— 
Var. discreta Mudd Man. p. 131 (1861).  Lichenoides tenuis- 
simum, scutellis exiguis miniatis Dill. Hist. Muse. p. 175, t. 24, 
fig. 68 (1741). Lichen elegans var. tenuis Wahlenb. Fl. Lapp. 
p- 417 (1812). Lecanora elegans var. tenuis Ach. Syn. Liehi. 
p- 183 (1814); Cromb. Monogr. i. p. 358.  Parmelia elegans 
var. discreta Scher. Enum. p. 52 (1850). 
Hab. On calcareous and other rocks in subalpine situations.— 
Distv. Rare in $8. Wales, N. England and the Grampians, Secotland.— 
B. M. Whimbold Rocks, near Radnor; East Allendale, Northumber- 
land; Craig Guie, Braemar, Aberdeenshire. 
5. Pl. dissidens Nyl. in Flora lviii. p. 298 (1875).—Thallus 
orbicular, moderate in size, stellate-radiate, the laciniz convex, 
narrow, often free at the circumference, crenate at the tips, dull 
reddish-yellow (K+ purplish), Apothecia numerous, concolorous, 
the thalline margin crenulate ; spores 9-16 » long, 5-7 p thick.— 
Pl. murorum f. dissidens Leight. on Fl. ed. 3, p. 161 (2873). 
Lichen flavicans With. Arr. “ed. 3, iv. p. 25 (1796) pro parte 
(non Swartz). L. elegans Sm. Engl. Bot. t. 2181 (1810) (right- 
hand fig.) (non Link). Lecanora dissidens Nyl. in Flora lviii. 
p. 298 (1875); Cromb. in Grevillea iv. p. 180 (187 6) & Monogr, i. 
p- 361. 
Exsice, Johns. n. 257 
Agreeing in outline and colour with states of Xanthoria parictina. 
The lacinie are somewhat similar in form to those of the pre- 
ceding species, but it differs in the colour, in the regular form and in 
