June, 1910.] Plants to be Excluded from Ohio Catalog. 
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trate condition of Apocynum hypericifolium Ait., the Clasping-leaf 
Dogbane, growing in the blowouts and on the sand-dunes. This 
is a rather rare plant in Ohio, being at present known only from 
this locality. The plants growing in less exposed conditions 
were nearly or quite erect. 
The prostrate condition is brought about by a curve of the 
single main stem an inch or two above the ground. The lateral 
branches spread out in a more or less radiating fashion, pro- 
ducing a very close superficial imitation of a typical mat plant 
(Fig. 1). The bending over of the steam and branches brings 
most of the leaves into a more or less vertical position. The 
peculiarity seems to be an adaptation to the light, but other 
factors may also have an influence. The cause of the habit could 
probably be easily determined by experiment. The stems 
develop abundant anthocyan and the leaves are very glabrous 
and glaucous. This Dogbane is, therefore, a very perfect xero- 
phyte being able to endure more easily perhaps than any other 
plant of the locality the intense light and heat often present in 
summer on the bare sand of the blow-out. 
A PROPOSED LIST OF PLANTS TO BE EXCLUDED FROM 
THE OHIO CATALOG. 
John H. Schaffner. 
In the December, 1908, Ohio Naturalist, the writer pub- 
lished a paper entitled “ Plants in the Ohio State List not Repre- 
sented in the State Herbarium.” In response to the request 
for information in regard to these plants a number of botanists 
have contributed data and specimens which establish a number 
of species as undoubted members of our flora. In the meantime, 
considerable work has been done on the plants of the state and 
the entire state herbarium has been studied more or less criticallv 
some of the more difficult groups by specialists. Many species 
represented by herbarium specimens cannot stand because of 
wrong identification. The present list is published with the 
hope that some may still be verified before publication of a new 
catalog of Ohio plants. Some records are based on fragmentary 
or imperfect specimens. In the future, all additions should be 
based on specimens about whose identification there can be no 
reasonable doubt. It is proposed, therefore, to exclude all of 
the species named below unless definite evidence of their exis- 
tence in Ohio as indicated by herbarium specimens is forth- 
coming. 
Probably some species should have been retained without 
question but it is evident that the only way to obtain a reliable 
