1902] Blanchard, — Our Chokeberries 55 



16. Asplenium Ruta-muraria, Linnaeus. Fronds deltoid, with 

 wedge-shaped divisions. Limestone cliffs, N. H., Vt., Mass., Ct. 



17. Camptosorus RHIZQPHYLLUS, Link. Walking Leaf. Fronds 

 undivided, with prolonged proliferous tips; abnormal forms not 

 infrequent. Limestone cliffs, but also on other formations. Me., 

 N. H., Vt, Mass., R. L, Ct. 



This completes the evergreen true ferns of New England, but in 

 old meadow lands, about hummocks and shrubbery, on springy hill- 

 sides, or in low woodlands, when free from snow, in many places 

 may be found the ternate fleshy sterile forms of Botrychium ternatum. 

 So also may be found the handsome furrowed stems of the scouring 

 rush (Equisctum hyemale L.) and several forms of club moss (Lycopo- 

 di/a/i), and Sclagiiiella. 



Note. In the preparation of this matter I have been greatly 

 indebted to Miss Slosson for many valuable observations which it 

 gives me pleasure to acknowledge here. 

 Medford, Massachusetts. 



OUR CHOKEBERRIES. 

 W. H. Blanchard. 



The compilers of the Flora of Vermont could find no authenticated 

 specimens of the Red Chokeberry, Pyrus arbutifolia, L., and so left 

 it out, though the Black Chokeberry was given as common. On May 

 26, 1900, I found the Red Chokeberry on Rocky Hill in Westminster, 

 Vermont, about two miles from the Connecticut River. While I felt 

 sure I had found the typical plant and no variety or "form," I sent 

 it to Pres. Brainerd and Mr. Fernald to have it compared with 

 authenticated specimens. Both pronounced it a normal plant of the 

 type form. So Vermont botanists can add another plant to our grow- 

 ing list. 



Some of my observations on both of our Chokeberries are here 

 given. They seem to indicate that these plants are variable in 

 several respects and may interest botanists. The plants have an 

 abundance of Latin names, some of them indicating that the color of 

 the fruit has been considered to be practically uniform. 



The Illustrated Flora describes the Red Chokeberry as from five 



