RYDBERG: NOTEs ON ROSACEAE 57 
Wisconsin, Michigan, and northern New York, labelled R. Engel- 
mannii and many labelled R. Sayi belong here. R. Sayi Schwein. 
is in reality a synonym of this. See discussion under the next 
species. Sometimes R. acicularis is nearly destitute of bristles, 
and may then be mistaken for R. dlanda, but the cance fruit 
always distinguishes it. Such specimens are: 
MicuiGAN: Presque Isle Park, Marquette, Wheeler (deter- 
mined by Crépin as R. blanda, with the following remark, ‘fruiting 
receptacle resembling that of R. acicularis var. Engelmannit’’). 
24. RosA BouRGEAUIANA Crépin 
This was first collected by Richardson on the Saskatchewan 
or somewhere between that river and the Mackenzie, and was 
published as R. majalis Borrer in Hooker’s Flora. There is an 
older R. majalis Herm., however. In 1875, Crépin proposed the 
name &, Bourgeauiana, without a description, but the next year 
he reduced it to.a variety of R. acicularis. Watson, in his Mono- 
graph of the North American Roses, adopted the name R. Sayi 
Schwein, and it has usually been known under that name. It is 
not R. Sayi Schwein., however, for Schweinitz described his species 
as having ellipsoid fruit and the leaves pubescent beneath: These 
characters point without any doubt to R. acicularis, which is also 
found in the region visited by Schweinitz. R. Sayi must therefore 
be regarded as a synonym of R. acicularis. 
25. ROSA ACICULARIOIDES’ Schuette 
Schuette’s description* is very meager, but the writer has seen 
some of his specimens. The description in the North American 
Flora was drawn from those in the Gray Herbarium. Later 
some were also found at the New York Botanical Garden, among 
duplicates from Schuette’s herbarium, received in exchange 
from the Field Columbian Museum, Chicago. The plant perhaps 
most resembles R. Bourgeauinana in habit, leaf-form, and size 
and form of the fruit, but the leaflets are densely pubescent 
beneath as in R. acicularis; yes, even more so, and with longer 
hairs. The specimens are from Lily Bay, Sturgeon Bay, and Little 
Sturgeon, Door County, Wisconsin. 
* Proc. Am. Ass. Adv. Sci. 46: 278-9. 1898. 
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