FALSE LOOSESTRIFE 159 



Jussiaea leptocarpa. Flowers less than 1 in. across. Petals 

 and sepals usually 6 each. Stems 2-6 ft. tall. Leaves 1-6 

 in. long. Capsule cylindric, about 2 in. long. Marshes. 

 Fla. to Ga., Texas, and Ark. 



Evening Primhose (Genus Oenothera) 



A true evening primrose, 0. laciniata, whose flowers 

 bloom by night, is common in dry soil. It is usually low 

 and spreading in growth, with light yellow flowers that 

 open in the late afternoon and change to copper-color or 

 reddish by the following morning. 



A beautiful western species, 0. speciosa {Hartmannm) , 

 whose white flowers, three to four inches across, open by 

 day and change to pink, has become naturalized on the 

 East Coast and elsewhere, as has the silky-leaved 0. Drunv- 

 mondii, an evening primrose whose night-blooming yellow 

 flowers are two to three inches broad. 



Oenothera laciniata. Flowers yellow, about 1 in. across, in 

 leaf-axils. Sepals 4, petals 4, stamens 8. Capsule 1 in. long. 

 Stems 6-24 in. long. Leaves alternate, 1-2 in. long, usually 

 deeply toothed or lobed. Dry soil. Blooming chiefly from 

 spring to fall. Fla. to N. J., Texas and Neb. 



Oenothera hmnifusa. Flowers 1 in. across. Leaves very 

 silky, toothed or entire, mostly about 1 in. long. On sea 

 beaches. Blooming from late winter to fall. Fla. to N. J. 



FALSE LOOSESTRIFE (Genus Ludwigia) 



Several of this genus grow in low grounds and bear 

 alternate leaves and inconspicuous axillary or terminal 

 flowers, which in some species lack petals. A short, some- 

 what square seedpod surmounted by four sepals is char- 

 acteristic of these plants. In L. suffruticosa the very 

 small flowers are in compact terminal heads, and lack 

 petals. L. data, also without petals, has angled or winged 



