DR LAUDER LINDSAY ON NEW LICHENICOLOUS MICRO-FUNGI. 547 



10. On or with Lecanora varia, Ach., var. symmicta, Ach. ; on rotten stumps of 

 Pinus sylvestris, Blaeberry Hill, Perth, April 1858, W. L. L. Conceptacles, ex- 

 ternally resembling spermogonia, contain deep brown, oval or ellipsoid, apparently 

 simple, sporidia, -0005" long, 00033'' broad. 



11. On Lecidea rupestris, Scop, (sub-nom. Biatora rupestris, var. calra, Dicks.), 

 on limestone rocks, in Hepp's Exsic. No. 134. Parasite consists of very small, 

 black, punctiform perithecia, scattered among the apothecia of the Lecidea, ex- 

 ternally resembling spermogonia, but containing very deep brown, oval sporidia ; 

 simple, or 1-septate, or both ; the colour rendering it impossible to determine their 

 structure. N ylander arranges L . rupestris as a variety under Lecanora cerina ; 

 a classification to which I cannot subscribe. 



12. Accompanying Pyrenothea verrucosa; on old oak, Castle P>ernard, near Cork. 

 Carroll. Parasite is seated on some of the thalline verrucse, associated and apt 

 to be confounded with spermogonia; sporidia spherical, brown, 00025'' in 

 diameter. 



13. On thallus of Endocarpon microsticticum, Leight. (which appears to be 

 only a var. of Lecanora cervina, Pers. ; having quite the aspect of the common 

 var. smaragdula, Whlnb.); Barmouth, North Wales, Leighton, 1856. Hymenium 

 gives no blue with iodine. Asci sublinear, -00020" to -000233" long, -00033" to 

 •0005" broad. Sporidia deep brown or olive according to age, 1-septate, oval, 

 •0005" long, 00025" broad, arranged either in a single row, or in a double series, 

 in each ascus. 



Endocarpon rufescens, Ach. is the seat of Sphceria Hookeri, Nyl. (Prod. p. 

 139 and 175; Linds. Otago Lich. and Fungi, p. 438), which has broadly fusiform, 

 3-septate sporidia (Nyl. Prod. 139), becoming sometimes 5-septate or polysep- 

 tate and muriform (Mudd, Brit. Lich. p. 271, plate v. fig. 112), in all cases brown 

 —sometimes constricted centrally or opposite each septum. 



Lecidea Endocarpicola. On the thallus of Endocarpon hepaticum, Ach.— on 

 walls, Lower Glanmire Road, Cork, Carroll — there is a parasitic Lecidea associated 

 with the apothecia and spermogonia of the Endocarpon, having many of the cha- 

 racters of L. aromatica, Turn (which, however, is not known to occur in the 

 athalline condition). The paraphyses have deep brown or bluish-black apices, 

 which are irregularly knobbed ; their bodies constitute, however, a mere striated 

 indistinct mass. Hymenial gelatine and asci become deep indigo-blue under 

 iodine; latter are •00233'' long, and 00050" broad. Sporidia very variable in 

 size, length from 00033'' to -00083", and in breadth from -000083'' to 000133"; 

 ellipsoid-oblong or linear-oblong; simple in young state, normally 3-septate in 

 maturity. 



14. On thallus of Usnea barbata, Fr., var. florida, L. ; Rio Janeiro, Henry Paul, 

 1851. Parasite is seated on some of the thalline tubercles usually occupied by the 

 spermogonia. Sporidia brown, 1-septate; very different from the simple, colour- 



