fication sphenophylloid. As a logical conclusion, she 
suggested that the Pteropsida should include the Clad- 
oxylales and Filicales, the Lycopsida should include the 
Lycopodiales and perhaps also the Psilotales and Psilo- 
phytales, and the Sphenopsida should include the Articu- 
latales and the Noeggerathiales. 
If the Articulatales are joined with the Noeggerathi- 
ales in the Sphenopsida and the group contains non- 
articulated forms with non-verticillated phyllotaxy, then 
it seems to me that the Sphenopsida cannot be separated 
from the Lycopsida, and that Jeffrey’s two groups are 
natural and inclusive enough to embrace all of the smaller 
groups excepting the Devonian Psilopsida, which have 
undifferentiated, leafless, rootless, dichotomized axes 
with terminal sporangia. 
I was unable to interpret the American specimens of 
Tingia until the method of preparation described by 
Halle was applied to our specimens. He noted that ‘‘the 
rock always splits along the plane of the large leaves, one 
counterpart showing the impression on the upper side, 
the other that of the lower. ... if the matrix bearing the 
impressions of the lower side of the large leaves, and of 
the axis, is removed, the smaller leaves are always found 
to be present.’” We were disposed to risk only two speci- 
mens of the nine available, because of the very fragile 
nature of the matrix. On both of these specimens the 
typical arrangement of the small leaves can be observed. 
Halle has described three species: Tingia carbonica 
(Schenk) Halle, 7° crassinervis Halle, and 7. partita 
Halle. Kon’no has described two others from Korea, 
Tingia hamaguchu WKon'’no and T.elegans Kon’no. He 
also recorded the occurrence of 7. partita and T. cf. car- 
bonica from Korea. All of the species are found in rocks 
of Lower Permian age. 
