BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 449 
*POTENTILLA PUMILA Poir. 
Common in dry open places in poor or sandy soil. Among the 
Miacomet pines, where the trees grow thickly and the soil remains 
damp beneath their protecting shade, there grows a form of this 
species, I do not determine it to be any other, which departs widely 
in appearance from the typical plant. It is marked by very 
delicate structure throughout, slenderly filiform and flexuous stems 
and pedicels, and rather large bright green leaves, the thinly 
pubescent leaflets becoming broadly cuneate-obovate and saliently 
dentate or incised mostly above the middle. With it occurs a 
form of Potentilla canadensis somewhat similarly modified but in 
less notable degree. 
GEUM CANADENSE Jacq. 
Rather common in thickets on the eastern side of the island 
from Shawkemo to Squam. A few plants remaining in flower by 
the middle of August, 1906; a single belated blossom Sept. 17, 1907. 
No flower buds visible up to June 26, 1910. 
Note.—\t appears that through an error now impossible to 
account for, the name Geum virginianum L. somehow found its way 
into Mrs. Owen's catalogue. Mr. F. G. Floyd has recently written 
to Mrs. Owen in regard to the status of this species as a Nantucket 
plant and has kindly sent me her reply, in which she entirely 
repudiates that entry in her list and expresses the wish that it be: 
corrected. Mrs. Owen writes that she has consulted the original 
notes and records on which her catalogue was based, which contain 
no reference whatever to the plant in question, ‘‘which she never: 
found herself or had reported by any body else from Nantucket.’” 
AGRIMONIA GRYPOSEPALA Wallr. 
A. hirsuta (Muhl.) Bicknell. 
Frequent in thickets throughout the same section of the island 
occupied by Geum canadense, and often growing with it. 
Conformity with the practise of the day leads me to use for 
this species the name given by Wallroth, an appropriate name 
indeed, but nevertheless one junior by some thirty years to that 
bestowed by Muhlenberg, whose good botanical eye first saw a 
distinctively American plant in our species hitherto viewed as a 
plant of Europe. The priority of Muhlenberg, however rejected 
