18 
io4- A. fnsco-pallens, Nyl. Arth., p. 92 (nomen.,) perhaps 
belongs to this section. — Tropical America. 
105. A. -. Thallus white, uneven, determinate, bordered by 
a dark zone. Apoth. dark brown and blackening, paler when wet, 
innate, minute, punctiform, rounded, numerous, often serially dis¬ 
posed. Spores ellipsoid, 8-*-12 locular, the middle cells commonly a 
little the largest, .030-36 by .010-12 mm. Reaction of the thekes 
vinous red. — Wright Cub., n. 120 b, p. p. 
106. A. . Thallus thin, white. Apoth. brown, small, act¬ 
uate, irregularly oblong, and mostly few branched, plane. Spores 
oblong-ellipsoid, narrowed at the ends, 6-8 locular, the middle cells 
larger, .054-76 by .018 mm. Reaction of the thekes and spores 
yellow.— Wright Cub., n. 140A ‘‘ ? A., status spilomatoides (n. 
140)” Mull. Arg. iu Sched. 
107. A.-. Thallus thin, white. Apoth blackening, innate, 
linear, few and short branched. Spores ellipsoid. 8 locular, .018-23 
by .007-9 mm -— Wright Cub., u. 619. 
108. A. -. Thallus thickish, somewhat mealy and cottony 
within, pale green, indeterminate. Apoth. innate, pale flesh-col¬ 
ored, dilated, plane, rounded and variously irregular, margined by 
the thallus. Spores oblong-ovoid, 4 locular, .011-13 by .004-5 mm - 
Reaction blue.— Wright Cub., n. 217, 218, 761, 762, 763, all appar¬ 
ently belonging to one species. 
To this section may also belong A. inf us cat a and A. myophcea 
Kph. N. Zeal., p. 44, Rom New Zealand. Descriptions not seen. 
Stock of A. biformis. 
109. A. impolita, (Ehrh.) Borr. Thallus effuse, white, tarta- 
reous, rimulose. Apoth. brown and blackening, rounded difform, 
or lobate, plane, pruinose, crowded or confluent, the hypothecium 
pale. Spores ovoid, 4-6 locular, .014-20 by 006-8 mm. ; figured 
in Hepp., n. 535. Reaction from blue vinous red.— Lichen impolitus 
Ehrh. PI. Crypt., n. 274. Borr. E. Bot., n. 2692. Ahnq., p. 22, 
Tuck. Gen., p. 220. Parmelia Ach. Meth., p. 160, Fr. L. E., p. 
183. Leprantha Kbr. Syst., p. 295, Arthonia ibid. Pg., p. 268. 
A. pr nines a Ach. Syn., p. 7, Nyl. Arth.. p. go, Pr. Gall., p. 411, 
Scand., p. 258. Lecanora fecunda Puck. Calif., p. 20, Gen. p. 211, 
Nyl. Syn. N. Caled., p. 60.—Europe; California. 
Var lobata, Flk. Thallus white, determinate, tartareous, un¬ 
even, lobulate. Apoth. fide Kbr. dark brown, innate, roundish 
polygonal, confluent, greyish pruinose. Spores 4-6 locular, .018 by 
.006 mm. — A. pruinosa var. Elk. L. I). n. 22, Nyl. Arth., p. go . 
