CLADOXIA.] CLADOXIE1. 145 



glaucous-green above, whitish beneath ; podetia short, cylindrical, 

 glabrous, subverrucosc or somewhat foliacoous, scyphiferous, greyish- 

 green or glaucous-white ; scj r phi dilated, proliferous from the centre 

 and from the denticulate margins (K , CaCl ). Apothecia small, 

 simple or conglomerate, brown. Cromb. Grevillea, xi. p. 113. 

 Oladonia verticillata var. sobolifera Leight. Ann. Mag. Nat. Hist. 

 ser. 3, xviii. p. 411, Lich. Fl. p. 64, ed. 3, p. 59; Cromb. Lich. 

 Brit. p. 19. Cenomyce cladomorpha var. sobolifera Del. in Dub. Bot, 

 Gall. (1830) p. 631. Coralloides sc-i/phiforme, maryinihus radiatis 

 et foliatis Dill. Muse. 85, t. 14. f. 9 A, B. Lichenoides pyxidatum, 

 i,ni,-'/!inf>us elei/anter foliatis Dill, in Kay, Syn. ed. 3, 69. 33. 

 Bi-i't. Krs. : Leight. n.' 14 ; Mudd, n. 9 pro partc, Clad. n. 2 ; Larb. 

 Lich. Hb. n. 322. 



Very closely allied to C. cerricomis, from which it is at once separated 

 by the reaction witli K. In other respects it is distinguished chiefly by 

 the somewhat smaller (rarely nearly as large) and less cnespitose thallus, 

 by the margins of the scyphi and the prolifications, which are often 2, 

 rarely 3, in which respect it more resembles C. verticillata. From this 

 also it seems distinct, and preserves its own type. The podetia are occa- 

 sionally sparingly foliaceous, and the apothecia are usually numerous. 



IIal>. On mossy boulders, rocks, and the ground in upland districts. 

 Distr. Somewhat local in S., W., and N. England, the Highlands of 

 Scotland, S. Ireland, and the Channel Islands; no doubt often over- 

 looked. B. M. : Grosnez Common, Island of Jersey. Near Dawlish and 

 Hunter Tor, S. Devon; St. Breock and Helminton, Cornwall; Malvern, 

 Worcestershire ; Rhewgreidden and Dolgelly, Merionethshire ; Ay ton 

 and Injrleby Moor, Cleveland, Yorkshire ; Windermere, Westmoreland. 

 New Galloway, Kirkcudbrightshire ; Barcaldine, Argyleshire ; Glen 

 Lochay and Rannoch, Perthshire ; Countesswells, near Aberdeen ; Glen 

 Nevis, Inverness-shire ; Applecross, Ross-shire. Ballyedmoud, co. Cork. 



17. C. macrophylla Nyl. Flora, 1873, p. 299. Thallus squa- 

 muloso-foliaceous at the base ; squaraules large, glaucous above, 

 whitish beneath, crenate at the margins ; podetia moderate or some- 

 what elongate, cylindrical, ascyphous or often with narrow scyphi, 

 rough with smaller glaucous squamules, becoming at length carious 

 (K-f yellowish, CaCl ). Apothecia brown, generally confluent; 

 spores 0,008-0,011 mrn.long, 0,0035 mm. thick. Cromb. Grevillea, 

 xi. p. 113. Cladonia ventricosa /3. macrophylla Schscr. Spic. (1833) 

 p. 316. 



In old age the podetia (which are then often blackish at the base, as 

 aro also the basal squamules at their base) become more or less carious, 

 and thus somewhat resemble those of C. cariosa. From C. decorticata 

 Fliirke, with which it has sometimes been confounded, and which pro- 

 bably also occurs in this country, it differs in the larger sqnarmtles and the 

 chemical reaction. In the only fertile British specimen the apothecia are 

 aggregate and deformed. 



Hob. On earth-covered boulders and ledges of rocks in wooded moun- 

 tainous regions. Distr. Apparently very local and scarce among the S. 

 and N. Grampians, Scotland. B. M. : Craig Calliach, Perthshire ; Head 

 of Glen Quoich, Braemar, Aberdeenshire. 



L 



