Phacelia 



BORAGINACEAE 



787 



0" 50 



Map 1698 



Phacelia Covillei S.Wats. 



50 



Map 1699 



Phacelia Purshu Buckley 



~To 



Map 1700 



Helibtropium indicum L 



expanse of corolla 4 mm, light Wisteria Violet (Ridgway) ; filaments glab- 

 rous ; capsules about 4 mm wide and 3 mm long, 2- or 3-seeded ; surface of 

 seed not reticulated in lines. 



The area where the plant grows is usually inundated each year for weeks 

 at a time. It is associated with Carya laciniosa, Liquidambar, and Que reus 

 Prinus. 



Known only from Knox County, Ind., along the Potomac River above 

 Washington, D. C, and Arlington County, Va. 



3. Phacelia Purshii Buckley. Pursh Phacelia. Map 1699. Our records 

 indicate that this species is restricted to the alluvial flood plains, banks, 

 and slopes of the terraces of streams. Found in sandy soil in the locations 

 indicated, along roadsides, and in clover fields. It is the most abundant in 

 the White Water River Valley. I have seen it by the acre along this river in 

 Franklin and Union Counties. It has become so abundant in some places 

 that farmers have reported it as an obnoxious weed. It can not stand 

 competition but when once established it will persist if bare soil exists. 

 We have had it in our meadow along the Wabash River for 25 years. 

 Wood's Classbook of all editions except the first gives Miami Mist for its 

 common name. Fisher 1 says it was so called in western Ohio. 



Pa. to Minn., southw. to N. C, Ala., and Miss. 



252. BORAGINACEAE Lindl. Borage Family 



[Johnston. A synopsis of the American native and immigrant borages 

 of the subfamily Boraginoideae. Contr. Gray Herb. Harvard Univ. 70 : 

 1-55. 1924.] 



Flowers white or yellow. 

 Nutlets armed with prickles. 



Calyx lobes in anthesis about 1 mm long; flowers usually 2 mm long; seeds mostly 



3-5 mm long 7073A. Hackelia, p. 790. 



Calyx lobes in anthesis about 3 mm long; flowers more than 2 mm long; seed 

 mostly 5-6 mm long. White-flowered form of Cynoglossum officinale. . . .p. 789. 



l Torreya 23: 106. 1923. 



