12 Rhodora [JANUARY 
DA O is as ETT OO TO 10 
Lactura spicata (Dam) Hitehe. ...........ens veles eo 15 
HARVARD UNIVERSITY. 
FALCARIA RIVINI, A PLANT NEW TO THE UNITED STATES 
E. M. Gress. 
` A COLONY of Falcaria rivini Host.! has been discovered on the farm 
of S. G. Myers about 4 miles south of Mercersburg, Franklin County, 
Pa. The colony covers an area about 10 /t. in diameter in the middle 
of a field of limestone soil. 
Mr. Myers first noticed the plant about five years ago growing in 
the clover and timothy, but gave little attention to it until he noticed 
that the plant was not eradicated by the ordinary method off crop 
rotation which consisted of clover and timothy, followed by corn, 
this being followed by wheat. 
A specimen of the plant was shown to Dr. John L. Bradley, a 
Veterinarian of Mercersburg, Pa., who noticed at once that the plant 
was not one of our common weeds. Dr. Bradley sent some specimens 
to the Bureau of Plant Industry at Harrisburg, for identification. 
The writer accompanied by Dr. Bradley visited the colony on 
September 9th and found that the plants had been cut off about 
8 inches above the ground by the binder when the wheat had been 
harvested, but that they had sprouted out from the cut stem. Some 
of the young branches were in bloom while others had passed the 
blooming period and contained immature fruits. We started to dig 
up the roots of one of the plants by using a large pen knife. We soon 
found that it could not be done with this instrument and Mr. Myers 
secured a mattock for the purpose. We dug as deep as we could 
with the mattock and then secured a post digger to finish the job. 
Everything went well until a large limestone rock was encountered 
through which we could not dig but through which the root seemed 
to find its way, probably through a crevice. We then cut the root off 
and measuring it, found it to be 35 inches long. The root was about 
! Falcaria vulgaris Brnh., Critamus agrestis Bess., Drepanophyllum sioides Web 
Sium falcaria L., Bunium falcaria Bieb., Drepanophyllum agreste Hoftm. & Koch. 
Seseli falcaria Crantz, Crithmum umbelliferum Bauh. 
