115 
niacula albicante lata, satis determinata indicatus; aootheciacoccinea 
Iineana, subsimplicia aut parum rarauiosa, angulatim s^pe flexuosa, 
innata, plana, opaca; sporas 6— 8n^ incolores, 5— 6-septat£e, oblonga^, 
sat magnae, longit. 0,030—36"^'^, crassit. 0.015™"^-, utroque apice fere 
sequales loculoque apicali utroque parvo subiequali. lodo gelatina 
hymeniaUs vinose rubens (passim praecedente ccerulescentia). 
Super cortices in Carolina (hb. Tuck.) Differt ab A. cinnabarma 
apotheciis gracilentis, sporis aliis. 
A. Cascarill^ (Coniocarpon, Fee Ess. p. 98, t. 15, f, 4). Thallus 
albidus parum conspicuus, indeierminatus; apothecia obscure violacea 
vel fusca vel obsolete violacee tincta, innata, minuta, sat crebra, rotun- 
data vel nonnihil difformia; spone Suae incolores oblongo-oviformes 
3-septatae, longit. 0.014— 16"^"^-, crassit. 0.005°^"^- lodo gelatina 
hymenialis intensive coerulescens, dein fulvescens. 
Super corticem Crotonis CascarillcB. Vixdifferens ab A. adspersa 
(Mnt.) nisi apotheciis minoribus simplicioribua. 
9. Arthonia diffusa, Nyl., Enumer, Lich. suppl. p. 337 (nomen), 
Thallus albus vel albidus, tenuis, effusus, opacus, saepe tenuissimus; 
apothecia nigra sparsa rotundata vel nonnihil difformia (latit. 0.3—0,7 ' 
""""'), innata plana vel convexiuscula, intus albicantia; sporse Snse 
incolores oblongo-oviformes3-septatse, longit, 0.009 — 0.013™*^, crassit, 
^•°'^35~0'0045"'^ ^ lodo gelatina hymenialis coerulescens. 
Corticola. Facie fere A. dnereopruinosce, Schaer., sed sporis min- 
oribus. Spermatia oblonga. 
10. Arthonia impallens, Nyl — Subsimilis A. stenographella, Nyl,, 
Nov. Granat. 2, p. 99, sed apotheciis omnino pallidis. Spor^ ovoideo- 
oblongae 2 — 3-septat^, longit. 0.011—12™"^, crassit. 0.0035 — 45"""^ 
lodo gelatina hymenialis coerulescens. dein vinose fulvo-rubescens. 
In New Jersey, supra llicem (Eckfeldt), 
11. Arthonia terrigeua. Will. — Thallus vix ullus visibilis; apothecia 
nigra minutellalecideoliformia (latit. fere 0.2"*^); sporae 8n£e incolores 
vel dilute fuscescentes oviformi-oblongae i-septatae, longit. 0.0 ri — 12 
*"™-, crassit. 0.0035'"'^ lodo gelatina hymenialis non tincta, proto- 
plasma thecarum vinose rubens. 
Supra terram humosam nudam locis umbrosis prope New Bedford 
(Willey). Species inconspicua infima,, cum nulla alia comparanda. 
12. Arthoria suhnimitissima^ Nyl. — Thallus nullus visibilis; apothe- 
cia nigra minutissima rotundata vel oblonga (latit, vix o.i™™-); sporae 
8nae incolores oblongo-oviformes i-septatae, longit. 0.007 — 9"*™' crassit. 
0.003 ™"^' lodo gelatina hymenialis vinose fulvescens, 
Pinicola prope New Bedford. Comparanda cum A. minutissima 
(Ach.) Nyl., Scand. p. 263, quae sporas habet majores. 
Observatio. 
Arthonia patellulata^ f. subpallidiuscula^ apotheciis humidis obscure 
pallescentibus. Super corticem Hamamelidis prope New Bedford. 
Quercus gra. — While riding along the turnpike from Dix Hills 
to Comae, Suffolk County, I noticed an oak which I was satisfied was 
new to me. It seemed to be quite plentiful in that light, sandy soil. 
On my return home I found it to be Quercus nigra. As I have 
