346 



IICHENACEI. 



[COCCOCAKPIA. 



apothecia. Like Panmdaria, it might almost be included amor.g the 

 Lecideei {ride Xyl. and Cronib. Journ. Linn. Soc. Bot. xx. p. 51 ) ; but its 

 more appropriate place is in this subtribe. It comprises only a few- 

 species, which, with a single exception, are natives of warm regions. 



1. C. plumbea Xyl. Mem. Soc. Cherb. v. (1857) p. 109; Lich. 

 Scand. p. ll!S. — Thallus orbicular, coriaceo-m.embranaceous, sub- 

 monophvllous, aduate, radiate-incised and radiately plica to-rugose 

 at the circumference, the margins broadly expanded and crenate, 

 livid-greyish or livid leaden-coloured ; liypothallus thickish, tomen- 

 tose, leaden-bluish. Apothecia small, plane or convex, reddish- 

 brown, the margin thin, entire, paler; spores ellipsoid, simple. 



issit*^ 



Fig. 57. 



Coccocarpia plumbea'^yl. — a. A theca and paraph jsis, x350. i. Three spores, 

 X500. c. Vertical section of two spermogones, X 30. d. Jointed sterigmata 

 and spermatia, X 500. 



0,016-30 mm. long, 0,007-11 mm. thick ; hymenial gelatine bluish 

 with iodine. — Cromb. Lich. Brit. p. 43. — Pannaria plumhea Mudd, 

 Man. p. 121 ; Leight. Lich. 11. p. 170, ed. 3, p. 154. Flacodiwn 

 phimheum Sm. Eng. Fl. v. p. 197. ParTnelia ijlamhea Hook. Fl. Scot, 

 ii. p. 53 ; Gray, Xat. Arr. i. p. 440 ; Tayl. in Mack. Fl. Hib. ii. 

 p. 142. Lichra plumbeus Lightf. Fl. Scot. ii. (1777) p. 826, t. 26 

 (lower fig.) ; AVith. Arr. iv. p. 00 ; Eng. Bot. t. 353. Lichen civru- 

 lescens Huds. Fl. Angl. ed. 2, p. 531. Lichenoides tenue et rnolle, 

 Agarici facie Dill. Muse. 179, t. 24. f. 73.— Brit. E.vs.: Leight. n. 

 233 ; Cromb. n. oQ ; Larb. Ca}sar. n. 72 pro parte ; Lich. Hb. n. 253. 



A well-marked and easily recognized plant, varying in diameter from 

 .3 to G inches, and occasionally siill more expanded. The thallus is often 



