NOTES ON THE DISTRIBUTION AND GROWTH OF 
NORTH DAKOTA CUSCUTAE 
O. A. Stevens 
Plants of the genus Cuscuta, collected during the past year, led 
to a revision of the specimens in the North Dakota Agricultural 
College herbarium, and the list is here given. Dr. J. Lunell of Leeds, 
N. D., who has the only other extensive herbarium within the state, 
has kindly loaned me his material of the group. 
Cuscuta epilinum Weihe. Commonly attributed to the state, 
but we have no record of its occurrence; nor has the examination of 
several thousand samples of flax seed, a large part of them uncleaned, 
shown any trace of the seeds. 
Cuscuta epithymum Murr. Not represented, but was found 
on white clover in a lawn at Fargo in 1912 or 1913. Seeds of this 
dodder have been found in several samples of white clover seed. 
Cuscuta planiflora Tenore. Not definitely recorded, but 
seeds were found in samples of alfalfa seed from near the western 
line of the state. 
Cuscuta arvensis Beyrich. Fargo, Valley City, Minot, and 
Logan Co. Two or three instances of its presence in alfalfa fields 
have come to notice. One collection by the writer, at Fargo, was 
made along the river bank where it grew upon everything within 
reach (25 spp.), including such riparian plants as Xanthium commune, 
Polygonum lapathifolium, P. emersum, Mentha canadensis, Lycopus 
americanus, Stachys palustris, Bidens vulgata, Mimulus ringens, and 
Scutellaria lateriflora. I found this dodder at Valley City, growing on 
Kuhnistera oligophylla, Chamaerhodos erecta and Ambrosia psilos- 
tachya in an old sand pit on the hillside. 
Cuscuta indecora Choisy. Fort Totten, on Lotus americanus. 
Cuscuta coryli Engelm. Numerous localities through the 
eastern and northern part of the state are represented, and the fol- 
lowing hosts: Solidago serotina, S. canadensis, Aster paniculatus, 
Helianthus tuberosus, Chenopodium album, Monarda fistulosa and 
Medicago sativa. I have also observed it on shrubs, Salix spp., 
Rhus rydbergii, Rosa sp., and Parthenocissus quinquefolia. 
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