RAMALINA. | RAMALINEI. 193 
Form minutula Fr. fil. Lich. Scand. i. (1871) p. 37.—Thallus 
very small, ceespitoso-erect, very much branched, non-sorediiferous, 
somewhat shining. Apothecia never seen.—Cromb. Grevillea, vii. 
p- 141.—Ramalina farinacea u. minutula Ach, Lich. Univ. (1810) 
p. 606. Lichenordes segmentis angustioribus, ad margines verrucosis et 
pulverulentis Dill. Musc. 172, t. 23. f. 63 a. . 
Referred by Acharius and most authors to R. farinacea, this is rightly 
placed by Fries fil. (2. c.) under the present species. Probably a young 
and barren state. 
Hab. On pales, chiefly larch, in wooded upland districts.—Distr. Local 
in 8. England, 8., N.E., and N, Sevtland; no doubt often overlooked.— 
B. M.: New Forest, Hants. Swanston, near Edinburgh; Park, near 
Aberdeen ; Lairg, Sutherlandshire. 
6. R. polymorpha Ach. Lich. Univ. (1810) p. 600.—Thallus 
rigid, compressed, nervoso-unequal or longitudinally sublacunose, 
moderate, subopaque, granuloso-sorediate, sublineari-laciniate, glau- 
cous or greenish-white ; lacinia plane, subsimple, often somewhat 
broad (medulla K—). Apothecia marginal, concave, small, pale- 
yellow or glaucescent, the receptacle rugoso-unequal or smaoothish ; 
spores oblong, straight or substraight, 0,011-16 mm. long, 0,004—5 
mm. thick.—Cromb. Grevillea, xv. p. 47 ; Lich. Brit. p. 25 pro parte ; 
Leight. Lich. Fl. ed. 3, p. 474 pro parte, et var. ligulata, ed. 3, p. 87 
pro parte.—Lichen polymorphus Ach. Prodr. (1798) p. 178. 
A variable species, of which ligulata Ach. (Meth. p. 265), 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- 
colorous globuloso-granulose soredia, more or less 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. 8. emplecta Ach. Lich. Univ. (1810) p. 601.—Lacinia 
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.—Parmelia polymorpha 
«. emplecta Ach. Meth. (1803) p. 267. 
Distinguished by the narrower and much branched lacinie, 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. 
Hab. On rocks and boulders in mountainous regions.—Disty. Local 
and scarce in the N. Grampians, Scotland—B. M.: Near Loch Callater, 
Braemar, Aberdeenshire. 
Subsp. R. capitata Ny]. ea Cromb. Grevillea, vii. (1879) p. 141.— 
Thallus small, with the lacinie 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.—Ramalina poly- 
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