Origin o/CEnothera Lamarckiana De Vries. 235 
and plate in “The Floral Magazine” is that furnished by a very 
important sheet in the Gray Herbarium of Harvard University. 
This sheet I shall again describe and figure in the hope that it may 
lead botanists to make a persistent search for herbarium material 
that may throw further light on the problem. 
Fig. 1. Sheet in the Gray Herbarium of Harvard University. An (Enotliera 
grown by Dr. Asa Gray at Cambridge, Massachusetts, in 1862 and probably 
derived directly or indirectly from the cultures of Carter and Company, of 
London, which were distributed under the name Lamarckiana. This plant 
differed'from Oenothera Lamarckiana De Vries in the longer internodes of the 
inflorescence, in the larger and more leaf-like bracts, in the more slender form 
of the buds, in the more attenuated sepal tips, and in the longer seed-capsules. 
The sheet in the Gray Herbarium (Fig. 1) holds specimens of 
a plant “ Oe. Lamarckiana” grown in Cambridge, Massachusetts, in 
1862 by Dr. Asa Gray. From records upon the sheet 1 it appears 
quite certain that Dr. Gray received seeds from William Thompson 
1 See Davis, American Naturalist, vol. 46, p. 417, 1912. 
