106 



ELLWANGER & BARRY'S CATALOGUE. 



PHYSOSTEGIA. 



P. Virginia lia. Spikes of purplish red ; flowers all summer ; four feet. July. 



PLATYCODOX. (Campanula.) 



P. grandiflora, Large, fine blue flowers ; one to two feet. June and July. 

 P. grandiflora alba semi-pleno. White ; eighteen inches to two feet. 



POLEMONIUM CJERULEUM. 



Poa. 



P. australis. A perennial grass forming 

 feathery tufts 1J to 2 feet high ; fine. 



POLEMONIUM. Greek Valerian. 



P. cseruleuin. Jacob's Ladder. Blue; 

 in terminal panicles ; 1 foot. July. 



P. reptans. A low, spreading plant ; blue ; 

 6 inches. June. 



POLYGONUM. 



P. cuspi datum. Giant Knotweed. 

 Flowers white, in clusters late in summer, followed 

 by handsome pale rosy fruit, 3J to 8 feet. 



POTENT1LLA. Cinquefoil. 



P. insig'nis. Pale yellowish ; 18 inches. June. 

 P. O'-Briana. Blush and salmon ; fine; 2 feet. July and August 

 P. pyrenaica. Yellow; dwarf. May. 

 P. Russelliana. Deep red, shaded with maroon ; 

 2 feet. July and August. 



PRIMULA. Primrose. 



P. acaulis. Common European Primrose. A 

 fine collection. 



P. auricula. All colors, mixed. 



P. elatior. Ox-lip Primrose. 



P. veris. Cowslip. Flowers bright yellow in ter- 

 minal umbels, in spring and early summer. 



PULMONARiA. Lungwort. 



P. aDg'UStifolia. Fine violet flowers ; 1 foot. April. 



P. maculata. Distinct, blotched foliage ; very fine border plant. 



primula auricula. 



PYRETHRUM. 



Double quilled like an Aster. Flowering in May or June. 

 P. Beaute de Laken. Dark velvety scarlet. 

 P. delicatissima. Delicate blush. 

 P. Gustave Hietz. Dull brick. 

 P. Herman Stensrer. Eosv blush. 



