1914] DE VRIES—OENOTHERA LAMARCKIANA 355 
The plant which Pourret called O. grandiflora Lam. is repre- 
sented on our pl. XVIII. It agrees wholly with the present 
0. Lamarckiana Ser., and in all respects. It was fastened on its 
sheet by the clerk of Pourret and consists of two flowering spikes 
and two separate flowers. The stigma lobes are seen spread above 
the anthers in the normal way. The specimens were picked at 
the beginning of the flowering period and bear no fruits; obviously 
they were main spikes. They will be recognized at once as OQ. 
Lamarckiana by anyone who has seen living cultures of this species. 
As I have quoted in my Mutation theory (loc. cit.), SpacH has 
Written on this sheet “Onagra vulgaris grandiflora Spach,’ which 
remark also proves the identity with O. Lamarckiana Ser. The 
printed label says “Collection de ’Abbé Pourret, extraite de 
Vherbier légué par M. le Dr. Barrer en 1847.” The main spike 
measures about 40 cm., the smaller one about 20 cm. 
In my book I have also referred to a specimen of O. suaveolens 
Desf. At that time I did not know the Alabama species and 
believed that O. swaveolens Desf. and O. grandiflora Ait. were syn- 
onyms, as almost all authors did. Therefore I used the two names 
Promiscuously. Last summer, however, I cultivated, side by side, 
O. suaveolens Desf. from Fontainebleau, collected by Dr. BLARING- 
HEM, and O. grandiflora Ait. from Castleberry, Alabama, collected 
by myself with Mr. BARTLETT. They proved to be wholly different 
species. So far as I know, the large-flowered Oenotheras, which 
are now relatively common in the western departments of France, 
all belong to O. suaveolens Desf., at least all the specimens and 
cultures on which I based my opinion in 1901 did. The specimen 
of the Muséum d’Histoire Naturelle, which I referred to especially, 
has been described by Davis from a photograph which is repro- 
duced on i. 39 of his paper. Davis, who did not know the O. 
suaveolens as a separate species, called it the flotsam of the her- 
barium (p. 529); it is, on the contrary, the authentic specimen of 
Desrontaings, bearing on the label the name suaveolens written 
by Dersrontares himself. The smaller plant, fastened on the 
Same sheet, has another label, saying only O. grandiflora, and seems 
to me to have been fastened on this sheet subsequently. The 
*L’Oenothera grandiflora de Vherbier de LAMARCK, loc. cit. 
