JANUARY 6. 1921 



The Florists'^ Review 



47 



Flowers will be scarce 



We are offering 



Wax Roses, per 100, $1.50, $2.00, 



Wax Carnations, per 100 



Wax Easter LUies, per 100 - 



Wax Orchids, per 100 - 



Wax Peas, per 1000 



Wax Callas, small, per gross 



Wax Callas, large, per gross 



Crepe Mums, per 100 



Crepe Dahlias, per 100 



Crepe Carnations, per 100 - 



Crepe Roses, per 100 - - 



Crepe Orchids, per 100 



Crepe Lilies, per 100 - 



Crepe Callas, per 100 - - - 



Crepe Summer Roses, per 100 



Crepe Snow Balls, per 100 - 



$2.50, $3.00 

 2.00 

 5.00 

 6.00 

 6.00 

 5.00 

 6.00 

 3.50 

 3.50 

 2.00 

 2.50 

 4.00 

 3.50 

 4.00 

 .90 

 1.75 



OTHER GOODS USED: 



Statice, $1.50 per lb. Green Ruscus, 75c per lb. 



H. Bayersdorf er & Co, 



1129-1133 Arch Street PHILADELPHIA, PA. 



Branch Factory, 709 First Ave., Ntw York City. Telephone Vanderbilt 4976 



and shoots. Frequently the unopened 

 buds are white with mildew before the 

 leaves are affected to any great extent. 

 These spots quickly enlarge, a felt-like 

 coating of a white, powdery appearance 

 being commonly found on the stems and 

 thorns. Later the mildew appearance 

 is less conspicuous or entirely lost, the 

 affected areas turning black. 



Dwarfing, curling and various defor- 

 mations of young leaves, stems and buds 

 occur. Injured leaves may fall and the 

 leaf surface of the plant may be great- 

 ly reduced. Growth and flower produc- 

 tion are materially interfered with, 

 young buds being frequently attacked 

 and rendered entirely worthless. 



Powdery mildew is caused by the fun- 

 gus Sphserotheca pannosa (Wallr.) L6v. 

 rosa? Wor. 



The fungus was first reported by Woll- 

 roth under the name of Alphitomorpha 

 pannosa. Subsequently the fungus was 

 called Eurotium rosarum by Greville, 

 Erysibe pannosa by Schlechtendahl and 

 Link, and Erysiphe pannosa by Fries. 

 Leveille transferred the fungus from the 

 genus erysiphe to sphaerotheca. 



Salmon states that roses in America 

 are attacked by two species of fungi, 

 viz., Sphaerotheca pannosa and 8. 

 humili, and that the American fungus 

 which has passed under the name of S. 

 pannosa is for the most part S. humili. 



He had seen only two specimens of true 

 8. pannos»a from America. Stewart re- 

 ports several cases of rose mildew in 

 which the fungus was unquestionably 8. 

 pannosa. 



As Seen Under a Microscope. 



Woronichin reports experiments with 

 the fur»gi causing powdery mildew of 

 the rose and peach in which negative re- 

 sults were obtained from inoculations 

 on the peach with the fungus causing 

 the disease of roses. He also states that 

 a study of the perithecia, asci and 

 spores of the fungi from the two hosts 

 •howed differences in their dimensions. 

 He concludes that the biological and 



