216 L1CHENES. 



[Nejjhroma. 



brown. Sm.—Ach. Meth. p. 283. t, 2. /. 2. — Lichen spurius, 

 Ach. Frodr.—E. Bot. t. 1542. 



Hedge-banks in Sussex and Suffolk.— This and the two following 

 species I am not at all times able to distinguish from P. canina. The 

 present, established by Acharius, appears to me as distinct as any, yet 

 in his Synopsis, the same author has referred it to the common state of 

 P. canina. — It forms small ascendant /mufr, almost every lobe of which 

 is fertile : apothecia rather large. 



7. P. rufescens, Ach. Meth. (dark-coloured Ground Peltidea); 

 thallus rigid concave even dark reddish-brown pale downy with 

 obsolete veins beneath, the lobes rounded with numerous fruit- 

 bearing processes, apothecia vertical roundish dark-brown with 

 a pale border. Sm. — Lichen rufescens, Neck. Muse. — E. Bot. 

 t. 2300. — L. caninus, (3. rufescens, Huds. — Lightf. — Peltidea 

 canina, (3. crispa, Ach. Syn. p. 239 Dill. Muse. t. 27. f. 103. 



On banks, among grass and mosses, frequent.— This again seems to 

 be a Lichen, respecting which the great Acharius has changed his opinion; 

 which ought to teach us caution, at least, in adopting it as a species, 

 for except in hue, it seems scarcely different from the preceding. 



8. P.polyddctyla, Ach. (many-fingered Peltidea); thallus glau- 

 cous-green naked glabrous with brown reticulated veins beneath, 

 fertile lobules very numerous and crowded and as well as the 

 brown terminal apothecia cucullato-revolute.— Ach. Syn.p. 248. 

 Hook. Fl. Scot. P. II. p. 6l.—Peltigerapolydactyla, Hoffm. FL 



Germ — Lichen Polydactylies, Jacq. Coll. v. 4. t. 14./. 2. a. b. 



Lichen caninus, y. Lightf. — Dill. Muse. t. 28. f. 107, 108. 



On the ground, on grassy or mossy banks and on low walls, frequent. 

 —This was well distinguished by Dillenius and Lightfoot, as also by 

 Acharius ; but whether it ought to constitute a species, is a point I am 

 unable to determine. 



23. Nephroma. Ach. Nephroma. 



Thallus foliaceous, coriaceous or membranaceous, spreading, 

 lobed, naked or hairy beneath, the lobules fertile. Apothecia 

 (peltce) orbicular, reniform, adnate on the underside of the lobules 

 or proper portions of the thallus and having a border formed or 

 the thallus.— Named from r,(p^ ? , a kidney and ow (or rather 

 epos), like, from the kidney-shaped apothecia. — This differs from 

 Peltidea only in the situation of the apothecia. 



1. N. resupindta, Ach. (resupinate Nephroma); thallus grey- 

 ish-brown smooth lobed and imbricated, fertile lobules very 

 short erect pale pubescent and granulated beneath, apothecia 

 large numerous red-brown with an uneven border. — Ach. Syn. 

 p. 241. — Lichen resupinatus, Linn. — E. Bot. t. 305 Dill. Muse. 



t. 28. f. 105. 



Trees and mossy rocks, chiefly in subalpine districts. 



2. N. parilis, Ach. (Chocolate Nephroma); thallus somewhat 

 coriaceous lobed jagged crenate and wavy greenish or pur- 



