RAM.VLIXA.] RAMALTNEI. 193 



Form minutula Fr. fil. Lich. Scand. i. (1871) p. 37. — Thallus 

 very small, Cfcspitoso-crect, very much branched, nou-sorediifcrous, 

 somewhat shiuing. Apothceia never seen. — Cromb. Grevillea, vii. 

 p. 141. — llamaliiia farinacea a. vnnutuJa Ach. Lich. Univ. (1810) 

 p. 006. Lichenoides aer/mentis anr/vstiorifms, ad maryines verrucosis et 

 2ndv€rulentiii Dill. ^Musc. 172, t. 23. f. 03 a. 



Referred by Acharius and most authors to R. fannacea, this is rightly 

 placed by Fries fil. (/. c.) under the present species. Probably a young 

 and barren state. 



Ilah. On pales, chiefly larch, in wooded upland districts. — Distr. Local 

 in 8. England, S., X.E., and IS'. Scotland ; no duubt often overlooked. — 

 B. M. : New Forest, Hants. Swanston, near Edinburgh ; Park, near 

 Aberdeen ; Lairg, Sutherlandshire. 



6. R, polymorpha Ach. Lich. Univ. (1810) p. GOO.— ThaUus 

 rigid, compressed, nervoso-unequal or longitudinally sublacunose, 

 moderate, subopaque, granuloso-sorediate, sublineari-laciniate, glau- 

 cous or greenish-white ; laciuice plane, subsimple, often somewhat 

 broad (medulla K — ). Apothecia marginal, concave, small, pale- 

 yellow or glaucescent, the recejitacle rugoso-unequal or smoothish ; 

 spores oblong, straight or substraight, 0,011-16 mm. long, 0,004-5 

 mm. thick. — Cromb. Grevillea, sv. p. 47 ; Lich. Brit. p. 25 pro parte ; 

 Leight. Lich. Fl. ed. 3, p. 474 pro parte, et var, liguJata, ed. 3, p. 87 

 pro parte, — Lichen jJolymorjyJius Ach. Prodr. (1798) p. 178. 



A variable species, of which Ugidafa Ach. (Meth. p. 2G-")), Lich. Univ. 

 p. 600, is the type. From all states of R. cuspidata, with which it 

 agrees in the reaction of the medulla, it is distinguished by the con- 

 coloroiis gIobulf)SO-granu]o&e soredia, more or le.^s scattered over the 

 thallus. It has not occurred with us fertile. 



Hab. On exposed rocks in maritime tracts. — Distr. Local and scarce 

 on the N.E. coast of Scotland. — B. M. : Near Portlethen, Kincardine- 

 shire. 



Var. ft. emplecta Ach. Lich. L'niv. (1810) p. 601. — Laciniae 

 attenuate, very much branched, acuminate, granulate. Apothecia 

 not seen. — Cromb. Grevillea, xv. p. 47; Leight. Lich. Fl. ed. 2, 

 p. 475 pro parte, ed. 3, p. 87 pro parte. — Parrnelia jiolt/nwrjjha 

 €. einplecta Ach. Meth. (1803) p. 267. 



Distinguished by the narrower and much branched laciniae, which are 

 also more erect, and somewhat rounded and acuminate at the apices. 

 The soredia are not crowded in our specimens, which are always sterile. 



Hah. On rocks and boulders in mountainous regions. — Disfr. Local 

 and scarce in the N. Grampians, Scotland. — B. M. : Near Loch Callater, 

 Braemar, Aberdeenshire. 



Subsp. E. capitata Xyl. ex Cromb. Grevillea, vii. (1879) p. 141. — 

 Thallus small, with the lacinia) lineari -divided, branched, obtuse and 

 capitato-sorediate at the apices. Apothecia terminal or subterminal, 

 the receptacle beneath at length nervoso-rugose or costato-nervose ; 

 spores oblong, slightly curved or substraight. — RarnaHna poly- 



