October 20, 1914. : Vol. I, pp. 30-32. 
PROCEEDINGS 
“OF THE 
THOREAU MUSEUM OF NATURAL HISTORY. 
MIDDLESEX, SCHOOL, 
CONCORD, MASSACHUSETTS. / 
THE 
FOLIACEOUS AND FRUTICOSE LICHENS 
OF 
CONCORD, MASSACHUSETTS, 
With Keys to all New England Species. 
BY R. HEBER HOWE, JR. 
(Continued. ) 
GENUS: RAMALINA Ach. 
Cortex bifacial or subterete, medulla arachnoid, axis rarely with 
adglutinated filaments. Apothecia entire or ciliate, disk pale. Asci cla- 
vate, 8 spored. Spores ellipsoid or fusiform, bilocular, hyaline, straight 
or curved. 
SECTION: ELLIPSOSPORAE Howe. 
Asci containing 8 hyaline ellipsoid or oblong spores. 
SERIES: MYELOPOEAE Wain. 
Medulla arachnoid, cortex thick (65-80u) hyphez divaricate above 
gonidia. 
Thallus sorediate or soraliate 
_Laciniz powdery-sorediate . 2 pollinaria 
Laciniz never powdery-sorediate: Perea) 
Apices acuminate (alt. 5cm.) . : : farimacea 
Apices erose (alt. 1.5em.) : 5 3 intermedia 
Thallus never sorediate or soraliate 
Laciniz bifacial 
Laciniz linear, connivo-canaliculate . ; canaliculata 
Lacinie never linear, etc. (compressed) 
Laciniz channeled, apothecia terminal . v. subfastigiata 
Laciniz never channeled 
Laciniz narrow, apothecia scattered . Sastigiata 
Lacinize wide, apothecia lateral . : v. subamplrata 
Laciniz subterete, torulose . : pees Willeya 
30 
E 
