decided.} vii. lichenes. 583 
13. Tkallus grey or white, granular , powdery or evanescent. Spores acicular or oblong, 
1 -many-septate. 
11. L. rosella, Ach. — Biatora, Fries; — Bab. in FI. N. Z. ii. 300. Thallus 
ashy, thin, unequal or granular. Apothecia rose-red or flesh-coloured, rather 
powdery ; border obtuse, white within ; spores acicular, many-septate. — 
Nyland. Lich. Scand. 209. 
Northern Island, Colenso. (Europe.) 
12. L. ceroplasta, — Biatora, Bab. in FI. N. Z. ii. 300. Thallus white, 
waxy, thickish, granular, subpellucid; granules minute. Apothecia large, 
appressed, flattish, at length convex, red, not pruinose, internally flesh- 
coloured; border thin, flesh-coloured; spores not found. 
Northern Island, Colenso. — Compared with L. rosella by Babington, but of a peculiarly 
waxy hue. Omitted in Nylander’s ‘ Enumeratio Lichenum.’ 
13. L. marginiflexa, Tayl. — Biatora, Bab. in FI. N. Z. ii. 299. t. 
129 B. Thallus white, glaucous, thin, minutely cracked, leprous, bordered 
with black. Apothecia rather large, crowded, purplish when moist ; disk 
pruinose, convex; border thin, flexuous ; spores oblong, 1-septate. 
Northern Island : common on mosses, bark, etc. (Australia, India.) — Perhaps not 
distinct from L. tuberculosa , Fee, and if so perhaps no Biatora. The apothecia are very 
concave and dark, as in Byalecta, and the disk dark, almost black. Nylander places it in 
his section Biatora. 
14. L. tuberculosa, Fee, Essai sur Cryptolg. des Ecorces Officin. 107. t. 
27./. 1. Thallus crustaceous, tuberculate, pale sulphur-coloured, indefinite. 
Apothecia scattered, black, flattish ; margin slender, entire, evanescent, horny 
internally; spores many-septate. — Nyland. Enum. 123. 
Northern Island, Colenso , on bark. Lord Auckland’s group, J. I). H. (Tropical 
America, Madagascar, Australia.) 
15. L. Domingensis, Ach. ? — Parmelia gyrosa ?, Mont. ; — Bab. in FI. 
N. Z. ii. 293. Thallus orbicular, glaucous, imbricate; lacunae flat, pal- 
mately multifid at the tips ; margins repand, toothed, powdery, beneath 
white, fibrillose. Apothecia scattered, brownish, pruinose ; border inflexed, 
at length crenulate; spores many-septate. — Nyland. Enum. 123. Parmelia, 
Mont. Crypt. Cuba, 212. 
Northern Island: on bark, mosses, etc., Colenso. — Specimens imperfect. (W. Indies.) 
§ 3. Apothecia black, 
a. Thallus scaly. 
16. L. decipiens, Ach. — Biatora, Fries; — Bab. in FI. N. Z. ii. 299. 
Thallus of roundish subimbricate scales or concave lobes, flesh-coloured or 
red, at length brown ; margins white. Apothecia marginal, convex or sub- 
globose, brown-black inside; border obsolete; spores ovoid or elliptic. — 
Nyland. Lich. Scand. 214. 
Northern Island : on rocks, Colenso. (Cosmopolite.) 
17. L. mamillaris, Bufour; — Bab. in FI. N. Z. ii. 300. Thallus white, 
turgidly areolate, somewhat lobed and plaited, cancellated or cracked. Apo- 
