164 AMERICAN MIDLAND NATURALIST 
Bluffton, Indiana, on September 23, 1907, and it bears her number 
2804. Mrs. Deam has given a special interest to Florida plants, 
and her explorations have resulted in a fine and varied representa- 
tion from that state in her herbarium. The species was named in 
her honor. 
Leeds, North Dakota. 
NOTES ON LOCAL PLANTS. 
By J. A. NIEUWLAND. 
In the July number of Rhodora* Dr. Fernald excludes 
both Aster macrophyllus Linn. and Thuja occidentalis from Indiana. 
Maps illustrating the distribution of both are given and show 
that these plants are not to be looked for even in Michigan within 
thirty miles or so north of the boundary of our state. As a matter 
of fact I have in the course of my botanizing trips, found Aster 
macrophyllus in several places in Indiana, notably at Chain Lakes 
a good ten miles south of the Michigan boundary. 
There is a Thuja-Larix swamp directly north of Mineral Springs, 
Indiana, less than a mile from Lake Michigan at the edge of the 
dune region, and about half way between Dune Park, Indiana 
and Michigan City. The Tamarack-Arbor-vitae swamp is on the 
eastern boundary of a notable region in which are found not only 
the ordinary dune plants of our inland lakes, but some not to be 
found elsewhere in our region except in the stretch from there to 
the Indiana-Illinois boundary. Among these plants is Opuntia 
humifusa Raf. The plant is found nowhere in our region except 
in the locality mentioned and it is very abundant there. It is 
probably protected from our severe frosts by the fact that, securely 
hidden between the dunes, the cold north winds tempered by 
passing over Lake Michigan between the rifts of the hills partly 
cover up the plants with sand and snow, thus keeping out the 
severe cold that would otherwise and elsewhere in our locality 
destroy them. 
Other plants peculiar to this region are Schmalizia arenaria 
Greene, Typha angustifolia Linn., and Hypericum kalmianum 
* Fernald, M. L. Expedition to Newfoundland and Labrador. Rho- 
dora, vol 13, No. 151, p. 142, July, rorr. 
