76 FLORA OF THE UPPER SUSQUEHANNA. 



■Phlox pamculata, the Sweet William of the gardens, is 



occasionally found as an escape. It does not persist. 



POLEMONIUM L. 



P. reptans L. Jacob's Ladder. Found sparingly throughout 

 our range. Frequent, Lucy. Found on river banks. A hand- 

 some plant frequently cultivated. 



P. Van-Bruntiae Britton. Jacob's Ladder. Greek Valerian. 

 Coville; Hoy. " Swamps about the source of the Susquehanna, 

 N. Y." — Grays Manual, 5th ed. {P. cccruleum L. ) 



HYDROPHYLLACE/E. 



HYDROPHYLLUM L. 



H. Virginicum L. Water-leaf. Burr-flower. Common in 

 shades, along roadsides and river banks. Corollas varying from 

 white to blue. June. 



H. Canadense L. Water-leaf. Rather rare. Reported from 

 their localities by Coville, Fenno and Lucy. 



BORRAQINACE/C. 



CYNOGLOSSUM L. 



C. officinale L. Hound's-tongue. Common along roadsides and 

 in waste places. Corolla a peculiar dull red, occasionally white. 

 A well-known weed. June. 



C. Virginicum L. Wild Comfrev. Somewhat rare. Found in 

 open woods. Flowers pale blue. 



LAPPULA M(KNCH. 

 L. Virginiana (L.) Greene. Stick-seed. Blrr-seed. Beggar's 

 Lice. Not uncommon in thickets and waste places. Flowers 

 small, white; fruit covered with many barbed prickles. 

 {Echinospeimum Virginicum Lehm.) 



MERTENSIA Roth. 

 M. Virginica (L.) DC. Blce bells. Smooth Lungwort. Vir- 

 (;in'ia Cowslii'. Common along the banks of riversand streams. 

 Plant a foot or more high; leaves large, obovate; flowers many, 



