68 Rhodora [Marcu 
Polynesia, Patagonia, etc.), and 16 occur in the Tropics or the Tropics 
and southward in the Southern Hemisphere. Absolutely no species 
is known above latitude 30° N., except S. pusilla, which ranges from 
latitude 40°-50° N.; and this northern species is so close to Gaudi- 
chaud’s S. australis of the Falkland Islands (near Cape Horn) and 
New Zealand that when La Pylaie described the Newfoundland plant 
as S. filifolia he identified the Gaudichaud material with it. Obvi- 
ously, then, S. pusilla did not originate quite by itself in the boreal 
regions, antipodally separated from the bulk of the genus (and family, 
for that matter) and then make a “southern migration” toward the 
home of its congeners. On the contrary, the status of S. pusilla was 
well diagnosed by Mrs. Britton when she wrote: “It is one of the few 
remaining survivors of a time when a tropical flora was distributed as 
far north as Greenland" (Fern Bull. iv. 18). The case of Schizaea 
pusilla is not different in principle from that of Lygodium palmatum, 
Selaginella apoda, Eriocaulon septangulare and others, Lachnanthes 
(Gyrotheca) tinctoria, Podostemon ceratophyllum, ete., whose relatives 
are almost wholly in the Tropics or the Southern Hemisphere. 
But to return to another feature of Taylor’s surmising. Any author 
who ventures to call Nova Scotia and Newfoundland even “ probably " 
unglaciated shows no familiarity with those regions and a minimum 
of intimacy with the geological reports covering them. The reports 
of the Geological Survey of Canada are replete with evidence of the 
glaciation of Nova Scotia; and even the late J. W. Dawson, who 
argued strenuously for another explanation of the phenomena, ad- 
mitted that “The whole surface of the peninsula has been striated 
and polished" (Dawson, Acadian Geol. ed. 3, 72 (1878). As to 
Newfoundland, Chamberlain & Salisbury say: "Newfoundland 
seems to have been a separate area of glaciation" (Earth History, iii. 
336), and Twenhofel states that, “Glacial time saw the island under 
a sheet of ice" (Am. Jour. Sci., ser. 4, xxxiii. 21). 
But the most amazing statement in the paragraph above quoted 
from Taylor is that in regard to Aster nemoralis; because to any 
experienced field-botanist its inaccuracy is so patent. Local cata- 
logues could not have been consulted in framing this remarkable 
statement, for Aster nemoralis is listed in every New England state 
except Connecticut. In fact, an examination of the sheets of speci- 
mens immediately at hand shows the reviewer this species from 44 
1 SELAGINELLA apoda (L.), n. comb. Lycopodium apodum L. Sp. Pl. 1105 (1753). 
S. apus Spring in Mart. Fl. Bras. i. pt. 2, 119 (1840). 
It is astonishing that the correct name for this common creeping species has not been 
heretofore assigned to it. Spring, in transferring the plant to Selaginella as S. apus, 
took the liberty of altering the Linnean specific name, a practice very common in his 
time; but certainly apus is not the feminine form of a neuter apodum. And even 
though, in violation of all nomenclatorial rules, some people may still persist in using 
the name S. apus, it would be quite inaccurate to ascribe the specific name to Linnaeus. 
who used a different name. 
