BJiOMTCES.] 



B^OMTCETEI. 



109 



the general habit, looking towards the Clailonias, must determine its 

 place. The differences in the thalliis and apothecia in some species are 

 not sufficient to separate them generically, though the}* place them in 

 different sections of the same genus. 



A. EUB^OMYCES Cromb. Grevillea, xv. p. 15.— Apothecia 

 stipitate, solid or subarachnoid within, veiled or naked, immarginate. 



Fig. oO. 

 Bceomyces roseus Pers. — a. Vertical section of an apotheeium (in dry state), 

 X 30. b. Theca and paraphysis, X 350. c. Spores, X 500. d. Section of 

 a epermogone, X 30. e. Arthrosterigmata and sperm atia, X 500. 



a. Apothecia solid within, naked. 



1. B. rufus DC. Fl. Fr. ii. (1805) p. 342.— Thallus effuse, thin- 

 nish, leproso-grauulose, greenish-white or glaucescent, the granules 

 sometimes depressed (K+ yellow). Apothecia small or moderate, 

 plane or convex, reddish- or brownish-flesh-coloured (K — ); stipes 

 moderate or short, sxibcompressed, whitish; spores 6-8n8e, oblongo- 

 ellipsoid, simple, 0,006-12 mm. long, 0,003-4 mm. thick ; para- 

 physes often slightly branched ; hymenial gelatine not tinged with 

 iodine. — Gray, Nat. Arr. i. p. 413 ; Hook. Fl. Scot. ii. p. 65 ; Sm. 

 Eng. Fl. V. p. 137 ; Cromb. Lich. Brit. p. 16 : Leight, Lich. Fl. 

 p. 52, ed. 3, p. bO.— Lichen rvfus Huds. Fl. Angl. (1762) p. 443; 

 With. Arr. ed. 3, iv. p. 14. Bceomyces rupestris Pers., Tayl. in Mack. 

 Fl. Hib. ii. p. 78. Bceomyces lignorum Pers. Gray, Xat. Arr. i. 

 p. 413, pro parte. Lichen hyssoides, Linn. Mant. (1767) p. 133 : 

 Lightf. Fl. Scot. ii. p. 808 ; Huds. Fl. Angl. ed. 2, p. 527 : Eng. Bot'. 



