SEEDLINGS OF BLOODROOT. 199 
a still higher grade of nuisances than they are in their native 
countries, of so many different kinds later in the season, we 
have only one representative in the early spring, the common 
Dandelion, Taraxacum officinale. This plant seems to have de- 
cided to conquer the earth, not even respecting the virgin prai- 
rie, where it often is smothering most other forms of plant 
life. Only a few years have passed since its first invasion, but 
we all understand that it came here to stay permanently. 
This being an unusually early spring, with its vegetation 
three or four weeks in advance of what is produced in an aver- 
age spring season, a continued chronological enumeration of 
plants would drift us into the flora of late spring or early sum- 
mer. As this is quite a complete record of our early spring 
flora, it proves certainly beyond doubt that this flora is rather 
deficient in species numerically, and the flowering time for this 
flora is very variable for different years. However, such dis- 
turbances disappear gradually as the season advances, and the 
equilibrium is restored altogether at or maybe before the end 
of June. A plant like Lilium wmbellatum, due on July 1st, 
knows and obeys this law, and will always arrive on time just 
when it is due. 
Leeds, North Dakota. 
Notes on the Seedlings of Bloodroot. 
J. A. NIEUWLAND. 
Having been fortunate during the season just past in se- 
curing typical stages of development of seedlings, I proceeded 
to examine these systematically with a view of obtaining re- 
sults worthy of record. A more thorough anatomical investi- 
gation must, however, be reserved for future study. 
The plants were specimens of the common Bloodroot of our 
middle western prairie region, which seem to be Sanguinaria 
mesochora, Greene,* or Sanguinaria canadensis, Linn., an 
the authors in part. This species proposed by Dr. E. L Greene 
appears to be somewhat different from the plants of the mid- 
dle Atlantie States, and of New England and Northern 
Canada. The flowers of the mature plants, around which the 
lings were found, are comparatively small and almost in- 
variably quadrate, of four large, broad outer petals and four 
smaller, shorter, and narrower inner ones. The flower has a 
* Greene, E. L.  Pittonia, Vol. V, p. 306-308. 
