Rhexia 



Onagraceae 



699 



o 5o 



Map 1472 



Jussiaea decurrens (Walt.) DC. 



o 50 



Map 1473 



Jussiaea diffusa Forsk 



Neck of capsule shorter than the body; stem and branches usually only sparsely 

 pubescent; seed muricate, 0.65-0.8 mm long 1. R. virginica. 



Neck of capsule as long as or longer than the body; stem and branches usually copi- 

 ously spreading-pubescent; seed 0.5-0.6 mm long, the papillae depressed 



2. R. via/riana var. leiosperma. 



1. Rhexia virginica L. Common Meadowbeauty. Map 1470. In north- 

 ern Indiana found in moist, slightly acid, black, sandy loam soil in 

 treeless areas in black and white oak woods, prairies, chokeberry thickets, 

 and borders of marshes and lakes. It is local, but where it is found it may 

 be very abundant over acres. In the southern part of the state it is very 

 local and found in the "flats" in fallow fields which were wooded with 

 beech and sweet gum or in low, open, flat, sweet gum, red maple, and pin 

 oak woods. 



Along the coast from N. S. to Fla. ; inland from sw. Ont. to se. Iowa, 

 southw. to La. and Mo. 



2. Rhexia mariana L. var. leiosperma Fern. & Grisc. (Rhodora 37 : 171- 

 172. 1935.) Maryland Meadowbeauty. Map 1471. Restricted to a few 

 southern counties and found in moist and usually rather sandy soil in road- 

 side ditches and hayfields and along railroads. 



Ind., 111., Ky., Tenn., Mo., Ark., and Tex. 



224. ONAGRACEAE Dumort. Evening-primrose Family 



Parts of the flower in fours or more numerous. 

 Calyx tube not prolonged beyond the ovary. 



Calyx persistent on the fruit; seeds without a tuft of hairs at the summit. 



Capsules mostly 10-20 mm long; stamens twice as many as the petals 



5791. Jussiaea, p. 700. 



Capsules less than 10 mm long; stamens 4 5793. Ludwigia, p. 700. 



Calyx deciduous; seeds with a tuft of hairs at the summit 



5795. Epilobium, p. 702. 



Calyx tube prolonged beyond the ovary. 



