1 20 OXALIDACEAE 



19. STROPHOSTYLBS Ell. WILD BEAN. 

 Vines with pinnately 3-foliolate, stipellate leaves, and capitate flowers 

 at the end of long peduncles. Pods linear, bearing several oblong trun- 

 cate seeds. 



Leaflets ovate. 1. 8. helvola. 



Leaflets linear-oblong. 2. S. pauciflora. 



1. S. helvola (L.) Britton. Spreading annual, l-4 long: leaflets 

 strongly lobed, 1/-2' long : pods 2 / -3 / long : seeds 3" long, pubescent. 

 Sandy bottoms, especially along the Missouri River. Not common. July- 

 October. 



Var. Missouriensis (S. Wats. ) Britton. Climbing, often 10-25 high : 

 leaflets usually entire. Common in sandy woods, especially along the 

 Missouri River. 



2. S. pauciflora (Benth.) S. Wats. Spreading annual, l-3 long: 

 leaflets entire, G^-SO" long : pods 1 X -2 X long : seeds 1" long, glabrous. 

 Sandy bottoms near Courtney, along the Little Blue, near Lee's Sum- 

 mit and adventized along railroads. Uncommon. July-October. 



FAMILY 64. GERANIACEAE J. St. Hill. 



Herbs with palmately lobed stipulate leaves and perfect, regular, 5- 

 merous flowers. Ovary 5-lobed, 5-celled. 



1. GERANIUM L. 



Stamens usually 10. Ovary cells each with two ovules. Fruit long- 

 beaked. 



Flowers 12"-18" broad. 1. G. maculatum. 



Flowers 4 // -6 // broad. 2. G. CaroUnianum. 



1. G. maculatum L. WILD GERANIUM. Erect perennial, l-2 

 high, somewhat pubescent : leaves 3-5-parted, the segments toothed at 

 the apex and often lobed : petals rose-purple, woolly at base. Frequent 

 in woods throughout. April-May. 



2. G. Carolinanum L. CRANE'S BILL. Pubescent branching annual, 

 6 / -18 / high : leaves about 5-parted, the segments lobed : petals light pink. 

 Common in barren soils. April-June. 



FAMILY 65. OXALIDACEAE Lindl. 



Herbs with palmately 3-foliolate, obscurely stipulate leaves and perfect 

 regular, umbellate or cymose, 5-merous flowers. Ovules 2-many in each 

 cell. Fruit a loculicidal capsule. 



1. OXALIS L. WOOD SORREL. SOUR CLOVER. 

 Stamens ten, monadelphous at base, alternately shorter. Styles five, 

 separate. Leaflets usually obcordate. 



Flowers violet. 1. 0. violacea. 



Flowers yellow. 



