524 Davis: LAMARCK’S EVENING PRIMROSE 
Muséum d’Histoire Naturelle. First, however, it should be noted 
that Buchet (1912) in a recent paper gives his opinion that this 
sheet agrees with Oenothera suaveolens Desfontaines, which he 
recognizes as synonymous with Oenothera grandiflora Solander, 
an older name. Buchet also regards the sheet shown on PLATE 38 
from the collection of Abbé Pourret as the same form as Lamarck’s 
plant and identifies it also with O. suaveolens. On this point I 
cannot agree, since, as will be shown later, the specimen of Abbé 
Pourret has important characters that distinguish it both from 
Lamarck’s plant (O. suaveolens Desfontaines = O. grandiflora 
Solander) and from the material in the cultures of De Vries. 
In the following account of the sheet which stands for the 
type of Oenothera Lamarckiana Seringe, are included not only the 
characters shown by the photograph (PLATE 37) but also others 
of equal or perhaps greater importance from the notes of Miss 
Eastwood and M. Gagnepain. In order to obtain direct com- 
parisons with respect to the pubescence I f urnished M. Gagnepain 
with specimens of stems and buds from both grandiflora and the 
Lamarckiana of De Vries’s cultures, asking him to compare the 
specimens with Lamarck’s plant but not informing him of their 
source. 
1. STEM AND FOLIAGE. The specimen of Lamarck’ 
(PLATE 37) exhibits the rather dense branching characteristic 
of certain forms of grandiflora in sharp contrast to the long sparsely 
branched stems of De Vries’s Lamarckiana. The stem, according 
to M. Gagnepain, does not have long hairs from red papillae, as sf 
so characteristic of De Vries’s Lamarckiana; the pubescence 
short and the stem subglabrous. The leaves are broadly elliptical 
or lanceolate with serrulate margins and with short but distinct 
petioles as in grandiflora; they are not sessile or almost sessile nof 
so broad as are the leaves of the Lamarckiana of De Vries. This 
herbarium sheet may be readily matched in the form of the 
branching and in the foliage by numerous specimens of gn 
collected in Alabama; it represents neither the broader- ait ‘ ; 
narrower-leaved forms in the range of variation in this species bu 
is nearest to the intermediate condition. 
2. INFLORESCENCE. The inflorescence does 
close spike with broad-based, sessile bracts, which 
s plant 
. 
not present the 
are so character 
