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Stations: Ontario: Algonquin Park; Nipigon. Maine: Southwest Har- 
bor; Green Mt.; Mere Pt.; Brunswick; Manchester; Piscataquis Co.; Warren; 
West Pembroke. New Hampshire: Gilford; Franconia; Fitzwilliam; Mt. Monad- 
nock; Peterboro. Massachusetts: Peppered ; Lunenburg; Natick; Ashby; 
Concord. Connecticut: Goshen; South Canterbury. New York: Chilson 
Lake; Jay; East Galway. Michigan: Sailor’s Encampment. Wisconsin. 
Minnesota. 
Observations: This sub-Boreal species, recognized by its canaliculate 
condition throughout, and subterminal spurred apothecia, grades to some extent 
into the foregoing species and has been widely recorded from our area. R. cali- 
caris, like barbata and jubata, borrowed by Tuckerman from Fries, stood for 
many years as a convenient catch-all for the innumerable integrading forms not 
well marked in varietal characteristics. In 1888, Dr. Wainio pointed out that 
calicaris L., heretofore considered “vagum,” is synonymous with canaliculata 
of Fries, as proved by the majority of specimens in the Linnean herbarium, and 
a general acceptance of this view followed, excluding the verdict of Acharius. 
As has already been seen, Dr. Wainio was here referring to specimens found in 
the Linnean herbarium which were in no sense Linnean types, but probably had 
all been added after Linneus’ death. It has also been pointed out that Linneus’ 
description is not diagnostic of this species. We are left therefore to make an 
unfortunate adjustment of nomenclature, which, as it is based on types, we trust 
may be permanent. Dr. Herre records this species from California, but attrib- 
utes to it curved spores. Is it not probable that his canaliculate examples should 
have been referred to young states of R. Menziesii, since canaliculata occurs as 
a typical Californian species with straight spores (see Hasse). As Mr. Merrill 
has said, often specimens determined as R. rigida represent typical material of 
this variety. 
Exsiccati : No. 183, Lich. Exsic., Merrill. Warren, Maine. Aug. 18, 1909. 
G. K. Merrill (called R. calicaris). No. 43, in part, Lich. Novae Angliae, Howe. 
Fitzwilliam, N. H. Aug. 8, 1909. R. H. Howe , Jr. 
Key to the Series Myelopoeae (Continued) 
Laciniae expanded 
Coriaceous . fraxinea 
Ample, laterally digitate y. ampliata 
Never coriaceous (membranaceous) 
Thallus reticulate reticulata 
Thallus never reticulate 
Laciniae lanceolate, not canaliculate below.. yemensis 
Laciniae never lanceolate, canaliculate below. Menziesii 
Laciniae never expanded 
Canaliculate throughout 
Sorediate sorediantha 
Esorediate linearis 
