FERNS OF THE WISSAHICKON 87 
that they belonged to seed-bearing plants; in fact, they 
were supposed to belong to marattiaceous ferns. 
The more or less complete life history of a number of 
other pteridosperms is now known, and from these it 
appears that there was considerable diversity not only 
in the form of the seed but in the manner in which it 
was borne on the plant. Thus, from the Carboniferous 
(Pottsville beds) of West Virginia, Mr. David White 
has described a plant under the name of Aneimites 
fertilis, which bore small, winged, rhomboidal seeds on 
the apices of reduced terminal pinnae. However, lack 
of space forbids further description of this and other 
forms 
It is evident from what has preceded that we are not 
dealing with ferns at all, but veritable seed-plants. It 
is probable that less than half of the Paleozoic ‘‘ferns’’ 
will ultimately be shown to be true ferns. 
Ferns of the Wissahickon Valley 
Epwin C. JELLETT 
(Address egies at the Philadelphia meeting of the Fern 
ceiety, December 29, 1914.) 
I shall endeavor to speak, not of ferns, but of where 
ferns grow in the Wissahickon district. 
To our local members present Wissahickon Creek is 
well known, but for the benefit of visitors it may be 
well to state it is a beautiful, romantic, historic stream, 
which rises in Montgomery County, Pa., and for 22 
miles flows in a general southwesterly direction to the 
Schuylkill River, with which it unites south of Mana- 
yunk. For 16 miles this stream meanders through a 
picturesque open territory to Chestnut Hill, where it 
enters a great, tortuous, longitudinal ravine, connect- 
