Davis: LAMARCK’S EVENING PRIMROSE §23 
presents so much variation as to have no taxonomic value. The 
leaves of these species are not strictly entire but serrulate, the 
teeth being small and in dried material inconspicuous: the teeth 
are, however, shown on some of the leaves on Lamarck’s plant 
(PLATE 37). The glabrous fruits agree best with the seed capsules 
of grandiflora, which are almost smooth, while those of De Vries’s 
Lamarckiana are decidedly puberulent and pilose. Mature cap- 
sules are not shown on the specimen of Lamarck’s plant, and no 
importance can be attached to their description as short. The 
teddish brown stem with occasional hairs agrees with grandiflora; 
there is no mention of numerous hairs arising from red papillae, a 
striking characteristic of the plants in the cultures of De Vries. 
The description of the leaves as glabrous is not strictly true either 
of grandiflora or of De Vries’s Lamarckiana, both having a minute 
pubescence, which is more evident in the latter form. Mr. Bart- 
lett has called my attention to the word ‘“‘sétacé” in Lamarck’s 
description of the sepal tips; this has been translated by De Vries 
(1901, Pp. 317) as ‘‘dicke.’’ The French is, however, from the late 
Latin word ““setaceus,’’ derived from “seta,” a stiff hair or bristle- 
The meaning is, then, exactly the opposite of that given by De 
Vries and refers to the much attenuated sepal tips, as shown in 
PLATE 37, a striking characteristic of grandiflora; the sepal tips 
of De Vries’s Lamarckiana are in contrast much shorter and 
thicker. 
It is surprising how little information is contained in the 
descriptions of Lamarck and Seringe that is of value in a com- 
Parison of Lamarck’s original plant with O. grandiflora Solander 
and “O. Lamarckiana De Vries.” The most important points in 
the writer’s opinion are the description of the attenuated sepal 
tips and the absence of all reference to the remarkable stem 
Coloration which is characteristic of the material of De Vries’s 
cultures. De Vries’s Lamarckiana invariably, so far as I am aware, 
Presents a green stem punctate with red papillae from which long 
airs arise among a short glandular pubescence. This is not 
noted by Lamarck, who describes the stem in agreement with 
Srandiflora as reddish brown with occasional hairs. 
€ may now take up the consideration of the herbarium sheet 
of Lamarck’s plant (PLATE 37) preserved in the herbarium of the 
