114 
mm 
'), vel subastroidea; sporae 8n?e ovoideo- oblongs 3-septatae, longit. 
0.012 — 15™™-, crassit. 0.004 — 5""™* lodo gelatina hymenialis coerules- 
cens, dein protoplasma thecarum fulvescens. 
Super lignum Vaccinii coryinbosi in paludibus prope New Bedford. 
Forsan sola subspecies A. astroide^^ a qua praesertim sporis nonnihil 
minoribus at reactione iodica differt. Gonidia vix uUa. 
3. Arthonia subastroidella^ N"yl. — Thallus vix alius; apothecia 
nigra minuta, confuse astroidea, insequalia; sporse 8nce oviformi- 
oblongse 3-septat3e, longit. o.oii — 12"^"^-, crassit 0.004^ — 5^^"^' lodo 
gelatina hymenialis vix reagens, protoplasma thecarum fulvo-rubes- 
cens. 
Super corticem Coryli ibidem. Affinis A. astroidm vel potius 
epipastoidi^ Nyl., sed reactione indicata differens. 
4. Arthonia quintaria^ Nyl. — Thallus macula pallescente indicatus; 
apothecia nigra subastroidea, minus divisa; spor^e Snse oviformi- 
oblongae s-septatse, long^ 0.018—21°'™-, crassit. 0.007 — 8™""', loculo 
supero majore. lodo gelatina hymenialis et protoplasma thecarum 
vinose rubescens. 
In Nova Caesarea super corticem laevem. Affinis A, asiroidece^ 
simplicior figura et sporis jam distincta. In A. obscura^ Ach., sporse 
minores. 
5. Arthonia siibminufula^ Nyl. — Thallus vix ullus; apothecia nigra 
tenera gracilenta astroideo-raraosa insequalia; sporae 8nae oviformes 
i-septatse, longit. o.oii — is""""-, crassit. 0.004— 5'"'*'- lodo gelatina 
hymenialis vinose rubescens. 
Super corticem -P//z/ ^/r^3/ laevem ad N. Bedford. Species min- 
utella affinis ^^ dispersce, Schrad. {A. 7?iimitula, 'Nyl, Arth, p. 102), 
sed apotheciis ramosis, reactione alia. 
^ 6, Arthonia Hajnamelidis, Nyl. — Similis A, astroidece, sporis min- 
oribus (3-septatis), longit. O.OII— 12™™-, crassit. 0.004™™* differens et 
ab A. astroidella subsimili iodo gelatina hymeniali coerulescente, dein 
fulvo rubescente, protoplasmate thecarum similiter tincto. 
Super corticem Hamamelidis Vir^inicce ad New Bedford (H. 
Willey), 
7. Arthonia fissurinea, Nyl— Thallus macula alba vel albicante, 
l^vigata, indicatus; apothecia pallida innata sublanceolata concavius- 
cula (latit. circiter 0.2™*"'), rtiargine thallode parum distincto; sporse 
8n^ incolores oviformi-oblongae, requaliter 7 — g-septatae, longit. 0.028 
^ 32™™*, crassit, 0.009—0.011™™- lodo gelatina hymenialis coerulee 
tincta, dein fulvo-rubescens (spor^ etiam sic tinctas). 
Corticola in Florida. Species affinis A fissurinellce, sed magis 
albicans et apotheciis pallidis (nee incoloribus) etc. 
8. Arthonia pyrrhidiza, Nyl. — Thallus albidus opacus, tenuiter 
obscure limitatus; apothecia rubricosa obscuriora, gracilescentia, varia, 
varie divisa; sporae Snae fiisc^ 3-septat3e, longit. 0.012 — \^^^\ crassit. 
0.0045™™' I<^do gelatina hymenialis coerulescens, dein fulvescenti- 
rubescens. 
Super Ilicis corticem prope New Bedford (H. Willey). Sporis ob- 
scuratis mox differt a comparandis, quales sunt A, pyrrhula et A, 
Cascarillce^ Fee, quarum definitiones hie addere liceat: 
A, pyrrhula, Nyl., Enumer. Lich. suppl. p. 337 (nomen). — Thallus 
