112 CYCLOCARPINEE [STICTA 
Hist. Muse. p. 549, t. 84, fig. 12 (1741). Lichen auratus Sm. 
Engl. Bot. t. 2359 (1811). 
Exsice. Cromb. n. 39 ; Larb. Cesar. n. 16; Leight. n. 261. 
Distinguished by the bright-yellow colour of the sorediate margins 
of the lobes. Form subglaucescens, collected at Lyme Regis, differs 
only in being bright-green when moist. The British plants are sterile. 
Cephalodia are sometimes formed on the under surface. 
Hab. On trees, rocks, heather, etc., in maritime localities.—Dvstr. 
Local and scarce in the Channel and Scilly Islands and in S8.W. 
England.—B. M. Near the Eperquerie, Sark; Jerbourg, Guernsey ; 
Fresco, St. Mary’s and Bryer Islands, Scilly; coasts of Cornwall; 
Undercliff, Lyme Regis, Dorset; near Shanklin, Ventnor and Ryde, 
I. of Wight. 
36. LOBARIA Schreb. L. Gen. PI. ii. p. 768 (1791) ; emend. 
Wain. Lich. Brés. i. p. 193 (1890). Lobarina Nyl. in Flora Ix. 
p. 233 (1871); Cromb. Monogr. i. p. 270. Ricasolia De Not. 
in Giorn. Bot. Ital. ii. p. 178 (1846); Leight. Lich. Fl. p. 120; 
Cromb. Monogr. i. p. 274. (Pl. 36.) 
Thallus broadly foliose, horizontal or partly ascending, cortex 
on both surfaces of plectenchyma, tomentose below, with the 
hyphal filaments single or in strands. Algal cells Nostoc, 
Cystococcus or Protococcus. Cephalodia sometimes present. Apo- 
thecia at first almost closed, then discoid, marginate, generally 
with gonidia in the margin ; paraphyses simple, septate ; spores 
8 in the ascus, elongate, 1—9-septate, colourless or brown. 
Distinguished from Sticta by the absence of cyphelle or pseudo- 
cyphelle on the lower surface. The British species of Lobaria are 
classified in two sections :— 
Thallus with blue-green gonidia.................... i. LoBaRINA. 
Thallus with bright-green gonidia................. ii. RIcAsouia. 
$i. Lopartna Wain. Lich. Brés. i. p. 193 (1890). 
Algal cells blue-green (Nostoc). 
1. L. scrobiculata DC. Fl. Fr. ii. p. 402 (1805).—Thallus 
wide-spreading, rigid, somewhat opaque, irregularly reticulate- 
pitted (scrobiculate), greyish-green, sprinkled especially at the 
margins with white or bluish-grey soralia, the lobes rounded, 
undulate more or less crenate at the margins, beneath pale- or 
dark-brown-tomentose, with scattered naked white blister-like 
elevations corresponding to the depressions of the upper surface. 
Apothecia very small, scattered, red or brownish-red, the margin 
thick, inflexed, entire, sometimes sorediate ; spores fusiform, 
3-7-septate, colourless, 50-80 » long, 6-7 » thick.—Lichenoides 
arboreum foliosum cinereum et sinuatum, inferne scabrum Dill. in 
Ray Syn. ed. 3, p. 75, n. 77 (1724). Lichenoides pulmonewm 
villosum, superficie scrobiculata et peltata Dill. Hist. Muse. p. 216, 
t. 29, fig. 114 (1741). Lichen scrobiculatus Scop. Fl. Carn. ed. 2, ii. 
