LOBARIA. | STICTEL. 273 
Hab. On the trunks of old trees and on mossy rocks in maritime and 
mountainous districts—Distr. Seen only in a characteristic state from 
S.W. England, N. Wales, the S. and W. Grampians, Scotland.—B. M. : 
Bryer Island, Scilly, Cornwall; Bettws-y-Coed, Denbighshire. Inverary 
and Barcaldine, Argyleshire ; Glen Lochay, Perthshire; by Loch Linnhe, 
Inverness-shire. 
Form 2. aggregata Cromb. Grevillea, xv. (1877) p. 76.—Thallus 
with cephalodioid tubercles, either simple or small and aggregate, 
testaceous or somewhat dark.—Sticta pulmonacea var. aggregata 
Del. Stict. (1825) p. 123, t. 17. f. 62. 
Differs from the state pleurocarprin bearing, not apothecia, but peculiar 
tubercles, which are rarely present on the under surface of the thallus. 
Hab. On the trunks of old oaks in wooded mountainous districts.— 
Distr, Found only in the 8.W. Highlands, Scotland. —B. M.: Inverary, 
Argyleshire, 
47. STICTA Schreb. in Linn. Gen. Pl. ed. 8, ii. (1791) p. 768; 
Nyl. Syn. i. (1860) p. 351; Flora, 1875, pp. 303, 363.—Thallus 
lobate or laciniate, often more or less sorediiferous, beneath with 
simple rhizine (rhizohyphe), cyphellate or pseudocyphellate; goni- 
dial layer consisting of gonidia. Apothecia lecanoroid or parmeleine, 
with variously septate spores. Spermogones as in the preceding 
genera. 
Distinguished from Zobaria by the thallus being cyphellate beneath 
and not scrobiculose above. From the character of the apothecia it may, 
like Stictina, be divided into two subgenera, viz. Eusticta and Parmosticta, 
the former with lecanorine and the latter with parmeleine apothecia. 
Nearly all the species are exotic, but one seen nowhere else in Europe 
occurs in Great Britain. 
Subgenus EUSTICTA Cromb. Grevillea, xv. (1887) p. 76.— 
Thallus beneath cyphellate or pseudocyphellate. Apothecia leca- 
noroid. 
a. Cyphellate.—Thallus cyphellate beneath, the cyphelle 
thelotremoid or urceolate. 
1. 8S. damzcornis Nyl. form latior Cromb. Grevillea, xv. (1887) 
p. 76.—Thallus expanded, smooth, slightly shining, laciniate, pale 
brownish-red ; beneath tomentose, dark brown, paler at the circum- 
ference ; lobes somewhat broadly dilated, sinuate, dichotomous and 
retuso-truncate at the apices. Apothecia moderate, chiefly marginal, 
reddish-brown, the margin entire or obsoletely crenulate; spores 
fusiform, 1-3-septate, 0,026-36 mm. long, 0,008-11 mm. thick.— 
Sticta dameecornis a. macrophylla Mudd, Man. p. 89; Cromb. Lich. 
Brit. p. 82; Leight. Lich. Fl. p. 119, ed. 3, p. 112. Sticta macro- 
phylla Hook. in Sm. Eng. FI. v. p. 205 ; Tayl. in Mack. Fl. Hib. ii. 
p- 150; Borr. in Eng. Bot. Suppl. t. 2697.—The specific name 
macrophylla, having been previously given by Delise (1825) to an 
ay 
