©CTANDRiA monogynia. Clarckia. 2@l 
Flores ex axillis superioribus, solitarii, subsessiles, 
magni, amoene purpurei. Calyx cenotherae. Petala 
unguiculata, 3-partita, laciniis lateralibus divaricatis. 
Stamina 4 antheris linearibus, involutis : altera 4. 
duplo breviora: antheris castratis, subrotundis. Stylus 
longitudine fere petalorum. Stigma pallide luteum» 
4-partitum : laciniis subrotundis. 
338. OENOTHERA. Gen. pl. 637. 
1.0. caule villoso scabro, foliis ovato-lanceolatis planis Hermis. 
dentatis, Roribus terminalibus subspicatis sessilibus, 
staminibus corolla brevioribus. — IVilld. sp. pl. 2. 
p. 306. 
Icon. FI. dan. 4 46. Jlp. exot. t. 324. 
Common in old fields : New England to Carolina. $ . 
June, July. v. v. 
I have frequently observed a singularity in this plant, 
and it might be interesting to make further inquiry 
into its cause ; it is, that in a dark night, when no 
objects can be distinguished at an inconsiderable di- 
stance, this plant when in full flower can be seen at 
a great distance, having a bright white appearance, 
which probably may arise from some phosphoric pro- 
perties of the flowers. 
2. O. caule purpurascente muricato, foliis ianceolatis planis, muricata . 
staminibus longitudine corollae. IVilld. sp. pl. 2. 
p. 80 7. 
Icon. Murray com. gcett. 7. t 1. 
In old fields and along fences : Pensylvania to Carolina. 
$ . July, Aug. v. v. Flowers smaller than the first 
species. 
3. O. caule laevi subvilloso, foliis ovato-lanceolatis planis, parviflora . 
staminibus corolla longioribus. IVilld. sp. pl. 2. 
p. 306. 
Icon. Mill . ic. I89. f. 1. Meerb. ic. 34. 
In fields and woods: Canada to Virginia j rare. <£. 
July. v. v. 
4. O. caule glabriusculo ramoso, foliis ovato-lanceolatis grandijiora. 
glabris, staminibus declinatis. IVilld. sp. pl. 2. p. 306. 
In woods and fields of Carolina. Bartram. <^. July. 
v. v. Flowers larger than any other of the North 
American species, and of an agreeable scent. 
5. O. caule diffuso molliter pubescente, foliis ovalhoblon- 
sinuata . 
