A GUIDE TO THE WILD FLOWERS 139 



leafy spike, night-flowering, yellow, about i in. wide, petals 

 4. Sepals united into a tube. Fruit a stout pod, longer than 

 the small leaves, among which it grows. In dry places, Labra- 

 dor to Florida and westward. June to Sept. Fig. 408. Com- 

 mon as a weed, as are also several of its closely related forms. 

 See Nos. 379, 380, 434, 445. 



409. SuNDROPS. Kneiffia frutkosa. {Oenothera fruticosa.) 

 (Onagraceae.) Erect or sometimes weak herbs, 1-3 ft. tall 

 with alternate lance-shaped essentially stalkless leaves, 1-3 

 in. long. Flowers in a sparse open cluster, few-flowered. 

 Petals 4, yellow, opening in sunlight. Sepals united into a 

 tube. Fruit a stalked or stalkless pod, usually largest towards 

 its tip, not over ^ in. long. In dry places. New Brunswick to 

 Georgia, and westward. July. Fig. 409. There are several 

 closely related forms. 



410. Leaves all opposite, or with more than 2 at each joint. 

 (Nos. 411-482.) 



Flowers yellow no. 465 



Flowers white (rarely greenish or pinkish) no. 439 



Flowers neither yellow nor white 

 Petals, or petal-like sepals, 4, (sometimes 5 in Viorna ochro- 



Icuca No. 430) no. 429 



Petals, or petal-like sepals 5 or more 



Leaves cut, or lobed, or divided, or toothed 



Geraniums no. 425 



Leaves not cut, or divided or toothed 



Plants with distinctly swollen joints 



Pink Family no. 420 



Joints not swollen, or if so, only slightly 



Essentially prostrate plant of dry sand; juice milky .. 



Wild Ipecac no. 419 



Plants erect or sprawling; juice not milky 



Stamens about the same number as the petals 



Sabbatias no. 415 



Stamens more numerous than the petals, usually much 

 more 

 Leaves distinctly stalked 



Leaf-stalks ^ in. long ; growing in dry places . . 

 Tar-weed no. 41 1 



