Rhodora 
JOURNAL OF 
THE NEW ENGLAND BOTANICAL CLUB 
Vol. 15. May, 1913. No. 173. 
SYSTEMATIC STUDIES ON OENOTHERA, — III. NEW 
SPECIES FROM ITHACA, NEW YORK. 
HarLeY HARRIS BARTLETT. 
In 1911 Prof. G. F. Atkinson cultivated experimentally several 
Oenotheras of the Oc. biennis alliance found wild by him in the vicinity 
of Ithaca, New York, in order to carry on a study of the hybridization 
phenomena exhibited by these plants. At the suggestion of Dr. 
Heinrich Hasselbring he sent herbarium material and seeds of three 
strains to the writer so that they might be compared with certain 
species which had already been cultivated and given provisional 
names in the writer’s garden at Bethesda, Maryland. One of the 
Ithaca strains represented a species quite distinct from any which 
had been previously received, and was treated in this article, as first 
submitted for publication, as a new species, under a name proposed 
by Prof. Atkinson. What seems to be the same species, however, 
was named Oenothera angustissima by Gates! in an article which 
reached the editor a few days before this one. The name Oe. 
angustissima has therefore been substituted for Prof. Atkinson’s but 
it has not seemed desirable to withdraw the diagnosis, which is di- 
rectly comparable with the diagnoses of the other species from Ithaca. 
The other two strains belonged to species already represented in the 
writer’s collection. The one described as Oenothera nutans had been 
cultivated not only in the Bethesda garden but also, by Prof. B. 
M. Davis, at Philadelphia, from seed collected at Havre de Grace, 
Maryland. The other, Oenothera pycnocarpa, was one of several types 
which Dr. Hasselbring had recognized as distinct, and had collected 
1 Gates, R. R. A new Oenothera. Ruopora, xv, pp. 45-48. 1913. 
