270 LICHF-XAfKI. [STICTIXA. 



wall; Tv Gw^n, Dolgellv, Merioneth^^hiro. Toughind, Kirkcudbrigbt- 

 sbire ; Bavcaldiue, Lorue, Argylesbire. Askew Wood aud Hyde's 

 Cottage, Killarney, co. Keirv. 



45. LOBAEINA Xyl. Flora 1S77, p. 233.— ThaUus broadly 

 lobed, serobiculose : beiieath partly tomcntose, gibbous, ecypbellate : 

 gonidial layer cousisting of gonimia. Apotheeia lecauoroid, with 

 3-.septate spores. Spermogones as in the preceding geuus. 



Formerly included under Stictiyia, but separated because the tballus is 

 scrobifiUose above, and destitute of cypbellte beneath. It consists of a 

 single species comiuoa with us, as it is in most parts of Xorthen- 

 Europe. 



1. L. scrobiculata ^\vl. Flora 1S77, p. 233. — Thallus dilated, 

 rigid, subopaque or opaque, more or less reticulately serobiculose, 

 usually sprinkled with whitish or caesio- white soredia, broadly 

 lobed, glaucous-yellowish: beneath gibboso-uuequal, tomcntose, pale- 

 brown, the gibbi naked. Avhite ; lobes rounded, undulate and more 

 or less crenate at the margins. Apotheeia small, scattered, red or 

 brownish-red, the margin thick, entire, inflexed : spores fusiform, 

 3_7_septate, colourless, 0,050-So mm. long, 0,006-7 mm. thick. — 

 Cromb. Grevillea, xv. p. 76. — Stictlna scrobiculata Xvl. in Cromb. 

 Lich. Brit. p. 30 ; Leight. Lich. Fl. p. 117, ed. 3, p." 110. Sticta 

 scrohiculata Gray. Xat. Arr. i. p. 430 -, Hook. Fl. Scot. ii. p. 59 : 

 Eng. Fl. p. 2U6; Tayl. in :M:ack. Fl. Hib. ii. p. 151 ; Mudd, :Man. 

 p. 87, t. 1. f. 26. LicJitn scrohiailatm, Scop. Fl. Carn. (1772) 

 p. 384 : Lightf. Fl. Scot. ii. p. 850 ; With. Arr. ed. 3, iv. p. 59 : 

 Eng. Bot. t. 497. Lichen verrvcosus Huds. Fl. Angl. ed. 2, p. 545. 

 Lichenoides pvlmoneum villosum, snperjicie scrohiculata et peliata 

 DiU. Muse. 216, t. 29. f. 114. Lichenoides arhoreum foHosum cine- 

 reum et sinuatum, inftrne scabrinn Dill, in Ray Syn. ed. 3, p. 75, 

 n. 77. — Brit. E:cs. : Leight. n. 201 ; Mudd. u. 65 ; Larb. Ccesar. 

 n. 14, Lich. Hb. n. 325 ; Cromb. n. 36. 



A well-marked species, not likely to be confounded with any other in 

 the tribe. In young plants the thallus is orbicular, less serobiculose and 

 sorediate. The lobes are occasionally more or less white-sorediate 

 at the margins. The naked gibbi of the underside of the thallus are 

 due to the faveolae of the upper surface ; and the rhizin;e which 

 constitute the tomentum are brown, pale, or greyish. In this country it 

 is rather mre in a fertile condition. More frequently the apotheeia 

 appear in an abortive state, constituting the host of Celidium stic- 

 taruin, Tul. 



Hab. On the trunks of old trees and on moist shady rocks, cbiefly near 

 streams and lakes in maritime and upland district*. — Uiatr. General and 

 common in most parts of Great Britain : plentiful in the W. Highlands, 

 Scotland, apparently rare in S. and W. Ireland, and in tlie Channel 

 Islands. —B. M. : La Coupe, Island of Jersey; Jerbourg, Island of 

 Guernsey. Tunbridge Wells and Lydd. Kent ; Hastings, Sussex ; Quarn 

 Wood, I\yde, I.-le of Wight; New Forest, Hants; South Brent, Ivy 

 Bridge, and Dewerstoue Rock, Devonshire ; Helmintou, Liskeard, Tre- 

 gawn, near the Tavy and Lamorna, Cornwall ; Bryer Island, Scilly ; 

 Chamwood Forest, Leicestershire ; ^lalvern, AN'orcestershire : Hay Cop- 



