150 i.UHi:.\ACi;i, [ci.ahoma. 



lliuls. F!. Aug], p. 4.Jt) : LigLtf. 11. t<cot. ii. p. 881 : With. Air. iv. 

 ]). 42. Coralloidcs cornicidis longiorihtis et rariorihus Dill. Muse. 

 102, t. 16. f . 2(3. Lichenoides tuhulosum cinereuni minus crustaceani, 

 minusqne ramosum Dill, in Eay, Pah. ed. 3, p. 67, n. 17. — Brit. 

 Exs. : Mudd, n. 16 pro parte, Clad. uos. 50, 51. 



Thi?, even its more limited Nylanderian conception, is a very variable 

 species as to the podetia, the differences in which give rise to the fol- 

 lowinor subspecies, varieties, and forms. As observed by Nvknder (/. i:.), 

 it approaches on the one hand C. (iracilh and on the other C'ladi/ia rangi- 

 ferinct. The type, as above described, is Lichen suhidatus of LinntBUS 

 and other authors, which in general appearance is somewhat similar to 

 C. gracilis (cJiordalis), from which it is at once di.^tinguished by the 

 apically furcate podetia. These are at times darlv -brown (form spadicea 

 Pers., Ach.) and at other times white (form epermena Ach.), according to 

 nature of habitat, the latter state occurring chiefly on cretaceous and 

 calcareous soil. When fertile, as it rarely is with us, the branches are 

 usually subfastigiate at the apices, with the apothecia either solitary or 

 cvmos'o-ao:gregate. For the anatomical texture of the thallus, ride Nvl. 

 L c. 



Hab. On the ground on moorlands and in woods in upland tracts. — 

 Distr. Probablv general and common in Great Britain and Ireland, though 

 seen from only a comparatively few localities. — B. M. : Fp]:ing Forest, 

 Essex ; near Widdicombe and Bovey Tracey, 8. Devon ; Temple Moor, 

 Cornwall : Charnwood Forest, Leicestershire ; Barmouth, Merioneth- 

 shire ; Island of Anglesea; near Ayton and Newton, Cleveland, York- 

 shire. Appin, Argyleshire ; Killin, Perthshire ; Sidlaw Hills and Clova, 

 Forfarshire ; (ilen Callater, Braemar, Aberdeenshire ; liothiemurchus, 

 Inverness-shire. Killarney, co. Kerry. 



Form exilis Mudd. Brit. Clad. (1805) p. 23. — Podetia very slender, 

 short, simple or sparingly branched, once or tv.-ice furcate at the 

 apices. Apothecia small, aggregate, dark-brown. — Cromb. Grevillea, 

 xi. p. 113. — Cladonia furcata var. teniiissiina Cromb. Lich. Erit. 

 p. 20 pro parte. — Brit. Exs. : Mudd, Clad. n. 53. 



This apparently descends frum var. fenuissimn Florke, of which pro- 

 bably it is only a more stunted state, being from | to 1 in. high. In 

 fertile specimens the podetia are somewhat thicker and but sparingly 

 branched, with very rarely a few minute scattered squaniules. The 

 ajiothecia are usually somewhat numerous. 



Hab. On sterile ground in upland moorlands. — Distr. l>ocal and scarce 

 in N. England, S. Scotland, and among the Grampians; no doubt to be 

 detected elsewhere. — B. M. : Guisboro' Moor, Cleveland, Yorkshire. 

 New Galloway, Kirkcudbrightshire ; Glen Lochay, Killin, Perthshire : 

 Hill of Fare, Aberdeenshire. 



Var. p. corymbosa Xyl. Syn. (1N60) p. 207. — Podetia thickish, 

 usually efoliolose, here and there longitudinally fissured, as also at 

 one or the other side of the apices, which are radiato-ramose or 

 subcorymbose. Apothecia as in the type. — Cromb. Lich. Brit. p. 20, 

 Grevillea, xi. p. 1 13. — Cenojui/re aJlotropu \ar. cor >/riibo-'<a Ach. Lich. 

 Univ. (1810) p. 556. — To this also secm.s referable the following : — 

 Ceno)iii/cc finxata Hook. Fi. Scot. ii. p. 6-4 ; t'/adunia fi*rca(a Gray. 



