. A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum. Lichens. 2S0 LICIIKNACEI. [ which at length forms an eyanesceiit iiiai-g-iu. All the species are normallj' terricole, the thallus being closely iidnate to the ground. With the excep- tion of S. octiispoya, all the European species have been found in Britain. 1. S. crocea Ach. Lich. Univ. (1810) p. 14iJ.— Thallua orbicular, thickish, appressed, more or less smooth, laciniato - lobed, undulate at the margin, dark-greenish when moist, reddish- or cinnanion- gre
. A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum. Lichens. 2S0 LICIIKNACEI. [ which at length forms an eyanesceiit iiiai-g-iu. All the species are normallj' terricole, the thallus being closely iidnate to the ground. With the excep- tion of S. octiispoya, all the European species have been found in Britain. 1. S. crocea Ach. Lich. Univ. (1810) p. 14iJ.— Thallua orbicular, thickish, appressed, more or less smooth, laciniato - lobed, undulate at the margin, dark-greenish when moist, reddish- or cinnanion- greyish when dry; be- neath (as also the medulla) dee]) orange- or saffron- coloured, - nervose, indistinctly subrhizinose. Apothcoia moderate, plane, rotundate or oblong, tumid, dark brownish-red; spores 6-Sure, oblong or fusi- formi - oblong, brownish, 0,035-45 mm. long, 0,010- 12 mm. thick.—Gray, Nat. Arr. i. p. 420 ; Hook. Fl. Scot. ii. p. 36 : Sm. Eng. Fl. V. p. 214 ; Mudd, Man. p. 85 ; Cromb. Lich. Brit. p. 20 ; Leight. Lich. Fl. p. 112, ed. 3, p. lOG.—LicJien croceus Linn. Fl. Sueo. (1755) p. 1101; Lightf. Fl. Scot. ii. p. 856 ; Huds. Fl. Angl. ed. 2, p. 548 ; With. Arr. ed. 3, iv. p. 68 ; Eng. Bot. t. 40. Lichenoides subtus croceum, ileitis apjjre.'isis Dill. Muse. 211, t. 30. f. 120.— Brit. Exs.: Cromb. n. 46 ; Dicks. Hort. Sic. n. 50. A beautiful plant, readily distinguished hj tlie saffron-colour of the underside of the thallus, whicli, even when growing, is generally per- ceptible from the margins being more or less subfree and upturned. The apolhecia are at first slightly immersed and rounded, then plane, oblong, and at length difform and somewhat large. On the thallus is occasionally seen the parasitic fungus, Sjikceria lichenicola DeNot. Huh. On the ground, and in fissures of rocks and bouldei'S in alpine places.—Distr. Kather local and scarce towards the sunnnits of some of the higher Scottish Grampians, abundant on the top of Ben Lawers; very ra
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectlichens, bookyear1894
