STICTIXA.] STICTKl. 209 



obtuse at tlic apices. Apothecia small or moderate, scattered, plane 

 or slightly convex, the margin naked ; spores as in ^S'. fitliyuiosa. 

 — Cromb.'Lich. Erit. p. ;W ; Leight. Lich. Fl. p. 1 1 (J, ed.'8, p. 100. 

 — Sticta i^i/lvafica Gray, Nat. Arr. i. p. 432 ; Hook. Fl. Scot. ii. 

 p. 59 ; Sm. Eug. Fl. v.' p. 207 ; Tayl. in Mack. Fl. Hib. ii. p. 152 ; 

 Mudd, Man. p. 87. Lichen s>jh'aticus, Huds. Fl. Angl. (1702) 

 p. 453 ; Lightf. Fl. Scot. ii. p." 848 : With. Nat. Arr. ed. 3, iv. 

 p. 71 ; Eng. Bot. t. 2298. Lichenoides poli/schldes villosum et 

 scnhrum, peltis ^^rtrv/* Dill. Muse. 199, t. 27. f. 101.— -Bri^. E.vs. : 

 Leight. n. 109 ; Cromb. n. 134. 



Also intimately allied to S.futir/innsa, from which it may be recog- 

 nized by the more deeply divided thallus, the narrower lobes which are 

 bifid or tritid towards the extremities, and the generally mnre naked or 

 slightly t'urfuvaceoiis upper surface. It is usually a larger plant, and 

 spreads more extensively over the substratum. With us it is always 

 sterile. 



JLib. On mossy rock«, old walls, and about the roots of trees in shady 

 places by lakes and rivers in upland districts. — Dixtr. Not very general, 

 though usually ph'ntiful, in the West of Great Britain and Ireland ; 

 abundant in the S.W. Highlands of Scotland. — B. M. : Lydford, Widde- 

 combe, Meavy, Lustleiirh Cleeve, and Higbury, Devonshire ; Boconnoc 

 and near Penzance, Cornwall : near Oswestry, Shropshire ; Ilafod, Car- 

 diganshire, Dolgelly, Barmouth, and Rhewgreidden, Meriouetlishire ; 

 Conway Falls, Carnarvonshire ; Island of Anglesea ; Eglestone, Durham; 

 Mardale, Westmoreland : Keswick, Cumberland ; The Cheviots, Nor- 

 thumberland. New Galloway, Kirkcudbrightshire ; Beld Craig, Moffiit, 

 Dumfriesshire ; Falls of the Cl_yde, Lanarkshire ; Callender rock, near 

 Stirling ; Inveraiy, Appiu, and 13arcaldine, Argyleshire ; Falls of Lenv, 

 of Moness, and in Glen Loehay, Perthshire ; Reeky Linn, Forfarshire ; 

 Craig Cluuy and Craig Coiunoch, Braemar, Aberdeenshire : S. of Fort 

 William, and Rothiemurchns, Inverness-shire ; Cawdor Woods, Nairn. 

 Blackwater Bridge, co. Kerry ; near Ivylemore and Denyclare, Coune- 

 mara, co. Galway ; near Carrickfergus, co. Antrim. 



6. S. Dufourei Nyl. Bull. Soc. Linn. Normand. 2 ser. ii. (1867) 

 p. 590. — Thallus small, thin, smooth, laciniato-lobed, glaucous or 

 glaucous-brown ; beneath slightly tomentose or nearly naked, pale- 

 brown, often reticulately rugose, with whitish or pale cyphellse ; 

 laciniae minutely dissecto-fimbriate at the margins. Apothecia un- 

 known. — Leight. Lich. Fl. p. 117, ed. 3, p. 110. — Stictina sijlvatica 

 subsp. Dufourei Crorab. Lich. Brit. p. 30. Sticta Dufourei Del. Stict, 

 (1826) p. 78, t. 6. f. 22. Sticta eJegans Deak. Mudd, Man. p. 89. 

 Sticta ciliata Tayl. in Mack. Fl. Hib. ii. p. 152. S.fimhriata Tavi. 

 Jour. Bot. 1847, p. 180. — Brit. Exs. : Leight, n. 173 ; Cromb. n. 135. 



Looks intermediate between S. fuliyinosa and S. sylvatica, and pos- 

 sesses some characters in common, but is distinguished from botli bv the 

 characters given in the diagnosis. It is easily recognized by its tim- 

 briate margins. It is met with in a less typical condition, with darker 

 thallus and more entire margins. It has not been seen fertile. 



Hab. On mossy rocks and trees in maritime and upland wooded tracts. 

 —Distr. Local and rare in S.W. England, N. Wales, the "W. Highlands 

 of Scotland (less typical), and S.W.Ireland. — B. M. : Near Torquay, and 

 at East Llyn, Devonshire; I'entire, near the Lizard, and Liskeard, Corn- 



