RAMALINA | USNEACE.E Nef) 
breviuscula f£. gracilescens Cromb. in Grevillea vii. p. 141 (1879) 
& Monogr. i. p. 199. 
The Irish specimens listed below have the characteristic growth 
of this form; they give the reaction K + yellow, medulla becoming 
red. The Kerry specimen was collected three miles from the sea. 
Hab. On rocks, ete., at or near the sea.—Disty. Rather rare in 
the Channel Islands, S. England and E. and W. Ireland, probably 
overlooked elsewhere.—B. M. Guernsey; Sark; near Brighton; 
Cloghane, Kerry; Achill Island, Mayo. 
10. R. Curnowii Cromb. ex Nyl. in Flora lviii. p. 441 (1875). 
—Thallus subrigid, slender, rounded or slightly compressed, 
sparingly branched, pale greyish-green, blackish at the base 
(medulla K—). Apothecia marginal-geniculate and terminal, 
rather small, becoming convex, smooth below ; spores ellipsoid, 
straight, 11-15 » long, 4—6 pw thick.—Cromb.. in Grevillea iv. 
p. 180 (1876); Leight. Lich. Fl. ed. 3, p. 90. 
Ezsicc. Cromb. n. 129; Larb. Cesar. n. 13. 
Very near the preceding species. Though the medulla is un- 
affected, the cortex, at least in some specimens, takes a red stain with 
potash. The apothecia and spermogones are frequently numerous ; 
the latter are blackish, thus, according to Nylander, suggesting affinity 
with Rf. carpathica, a Hungarian species in which the margin of the 
apothecium is black. The spermatia measure 3 pu long, 1 p thick. 
Hab. On rocks in maritime districts.—Dzstr. Common in the 
Channel Islands, 8.W. England and W. Ireland.—#. M. Grisnez 
Common, Jersey; St. Mary’s, Scilly; St. Michael’s Mount, near 
Land’s End, and Penzance, Cornwall; Clare Island, Mayo. 
Thallus saxicolous, sorediate. 
11. R. subfarinacea Ny]. in Flora lvi. p. 66 (1873).—Thallus 
erect or subpendulous, pale-greenish or greenish-grey, formed of 
tufts of crowded branched rather narrow compressed laciniz, 
smooth or slightly channelled, attenuate and often much divided 
upwards.; soralia numerous, ellipsoid or roundish, marginal 
(medulla and soredia K + yellowish, then rusty-red). Apothecia 
rare, small, marginal or subterminal, becoming convex; spores 
oblong, straight, 12-15 p» long, 4-6 yp thick.—Cromb. in 
Grevillea xv. p. 47 (1886). RR. calicaris var. thrausta Mudd 
Man. p. 73 (1861) (non Ach.) ; Leight. Lich. Fl. p. 94 pro parte. 
i. scopulorum var. subfarinacea Ny|. ex Cromb. in Journ. Bot. x. 
p. 74 (1872); Leight. Lich. Fl. ed. 2, p. 476; ed. 3, p. 89. 
Exsicc. Cromb. n. 23; Johns. n. 19; Larb. Lich. Hb. n. 323. 
A stouter plant than R. farinacea, which it partly resembles in 
habit and structure, more especially in the form and position of the 
soralia. It differs in the well-marked reaction with potash and in the 
saxicolous habitat. It occurs in small tufts or occasionally forms 
extensive swards. 
