SERIES: FISTULARIAE Wain. 
Thallus foraminous or fistulous 
Apices multifid-dendroid . 5 , : pollinariella 
Apices not multifid-dendroid : : 3 dilacerata 
SECTION: FUSISPORAE Howe. 
Asci containing 8 hyaline fusiform spores . : stenospora 
Me. N. H. Vt. Mass. R. I. Conn. 
Ramalina pollinaria (Westr.) Ach. — + + 
farinacea (L.) Ach. 
intermedia Ny]. fare cat 
fastigiata (Pers.) Ach. emend. ieee 
fastigiata v. subfastigiata (Nyl.) 
fastigiata v. subampliata (Nyl. emend) 
Howe eee 
canaliculata (Fr.) Herre + 
Willeyi Howe See eae 
stenospora Muil. Arg. als 
dilacerata (Hoffm.) Wain. —- — =e 
pollinariella Nyl. Sf te 
R. intermedia Nyl. 
Thallus caespitose (1.5cm. alt.), virescent, branches compressed, 
apices erose. Apothecia unobserved. On stone walls. 
_R. fastigiata (Pers.) Ach. emend. 
Thallus caespitose (8cm. alt.), virescent, branches compressed, lacin- 
iate. Apothecia discoid, entire, scattered, disk pale. Spores straight 
9-18x 4-7. On trees, shrubs, old wood, rarely on rocks. 
R. fastigiata var. subfastigiata (Nyl.) comb. nov. 
Thallus caespitose (2cm. alt.), virescent, branches compressed, chan- 
neled. Apothecia as above, subterminal or terminal. Spores as above. 
On trees (Populus), ete. 
R. fastigiata var. subampliata (Nyl. emend.) Howe. 
Thallus caespitose (2cm. alt.), virescent, branches compressed, wide. 
Apothecia as above, lateral. Spores as above. On trees (Fraxinus), etc. 
R. canaliculata (Fr.) Herre. 
Thallus caespitose (8cm. alt.), virescent, branches linear, connivo- 
canaliculate. Apothecia as above, subterminal, spurred. Spores as 
above. On trees. 
GENUS: THAMNOLIA Ach. 
Cortex terete, medulla arachnoid, axis hollow. Apothecia unknown. 
Me. N. H. Vt. Mass. R. I. Conn. 
Thamnolia vermicularis (Sw.) Ach. + 
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