opening entirely, only on one side to admit the expansion 
of the corolla, and standing out nearly horizontally. Petals 
four, placed upon the summit of the tube of the calyx, 
very large, obversely cordate, spreading, waved, pure white, 
yellow at the base, and sending upwards several yellowish- 
green, slightly diverging nerves, becoming rose-coloured 
previous to decay. Stamens eight, inserted just within the 
tube of the calyx. Filaments nearly equal in length to the 
corolla, erect, alternately shorter. Stamens long, linear, 
placed transversely, with their centre on the top of the fila- 
ment. Pollen yellow, cohering together, and hanging 
attached to the stamens, stigmas, and style, m great abund- 
ance, after the bursting of the cells. Germen inferior, 
subclavate, but slightly attenuated at both ends, and qua- 
drangular, pubescent. Style filiform, longer than the sta- 
mens. Stigmas four, spreading cross-wise, linear, afterwards 
pendent. 
As I suspected, when I first described this plant, ten years 
ago, in the Exotic Flora, this fine and fragrant species of 
Evening Primrose has proved perfectly hardy, producing 
its lovely cream-coloured blossoms, which change to rose- 
colour in decay, in the open border, during the months of 
July and August. It was discovered by the American 
Yotanst, Mr. Nurrat, on the plains of the Red River, in 
Arkansa territory of North America, and communicated 
to the Glasgow Botanic Garden by Mr. Dick, of Phila- 
delphia, who kindly transmitted some seeds, which had 
ripened under his own care. Like some other species of 
this Genus, the scent of the blossoms is most powerful in 
the evening. 
The flowers continue many days in perfection, and are 
most fully expanded at the approach of night. 
Fig. 1,2. Leaves: nat. size. 
