105 
goes, and I should not be surprised if it were found in some of the her- 
baria of the State. If soa prompt report should be made. 
Rumex sanguineus l.., reported from Jefferson and Clark counties, 
shows itself, upon an examination of the specimens, to be FR. crispus L., 
with the veins of the foliage leaves of a somewhat reddish cast. The 
outer characters are evidently those of R. crispus L. In the absence of 
further data R. sanguineus must be excluded from the State list. 
It may be suggested at this point that few forms respond in so marked 
a manner to changed conditions as the docks. These changes involve the 
general habit, venation, inflorescence and markings of the valves. The 
collection of a single species under varying conditions will sufficiently 
explain the doubt felt in admitting to the State flora, without further 
evidence, the three forms just discussed. 
The genus Polygonum is represented by nineteen species in our bounds. 
The specimens examined show a number of incorrect references, which 
serve to render doubtful some statements as to the distribution of these 
forms. Among the more common errors of reference are the following: 
P. lapathifolium L., for P. incarnatum Ell. The larger and more erect forms 
of P. aviculare L., for P. erectum L., while very often P. Hydropiper L., and 
P. punctatum Ell. =(P. acre H. B. K.) are found associated upon a single 
herbarium sheet. An examination of the ordinary descriptions of these 
species will show how easily such errors in reference may be made, and 
how small is the likelihood of their subsequent correction unless especial 
attention is called to them. 
P. Careyi Olney is reported only from Noble County by Van Gorder. 
This is to my mind a very doubtful reference. The recorded range of the 
species is northern Maine and New Hampshire to Pennsylvania and On- 
tario, which militates somewhat against the accuracy of the reference, 
while the wide range of variation in the nearly related species P. am- 
phibium L., and P. emersum (Michx.) Britton, (=P. Muhlenbergii Watson) 
suggest its proper reference is to one of these forms. My own experience 
in the collection of Polygonums in the same region leads me to believe the 
form to be P. emersum. P. Careyi Olney is, therefore, to be omitted from 
the State list unless other data are available. 
P. ramosissimum Michx. is reported only from Vigo County, by W. 8. 
Blatchley. The recognized range of the plant includes the whole State. 
It is probable that it is of fairly general distribution and has been mistaken 
