. / I
I Adulteramis and Weed Seeds of Seed Samples. 25
U soil, but the young plant secures itself at once to a weed or other P
lg]y plant, up which it climbs, and later, clambers over plants and loses I;
;.h€I· , all connection with the soil. The clover dodder has, during the past “‘
site eight years, appeared in a number of localities! I have had it from
05; Wilmore, Mortonsville, Fallsburg, Midway, Bardstown and Ful- ,
wer tw- T Y _
» Alfalfa Dodder (Ouscutta epithym/um»).—Tl1e technical name t "i
here used is appliedin botanies to the clover dodder; alfalfa dodder ' I
and clover dodder being considered one species. Mr. F. H. Hillman t
ree- of the Seed Laboratory, United States Department of Agriculture, ~ 3
hat has, however, after a careful study of both seeds and plants, con- _
>at. eluded that there are two species, both of which occur in both clover I
fig and alfalfa. Samples of the seeds which he has kindly furnished ~’
us show that so far as these alone are concerned, the differences are
ind suthcient to justify his position. And I can say that my own ex- .
765- amination of both seeds and plants corroborates his conclusion in
y the matter. The alfalfa dodder seeds are of a 1·eddish yellow color A
instead of gray, and are more disposed to be elongate than round.
An example measures 0.04 by 0.02 inch. Fig. 19, C.
HH A small clump of the plants introduced with alfalfa seed in the i
N plots in the Experimental Farm in 1905 were yellow instead of red. I
O Theplants were destroyed and the soil treated with crude carbolic r
md acid, since which nopmore have appeared. This dodder has been I
sent from Bardstown, and probably occurs in other regions on both
S fl . clover and alfalfa.
Jat Field ])orl