THE CAMPHOR SCALE 



year after infestation. The scale carried over on quince and plum, 

 although during the 3 years these trees were under test they did not 

 become heavily infested. On peach the scale never reproduced, 

 although several attempts were made to establish an infestation. 



A list of the plants on which the camphor scale has been found 

 in the New Orleans area is given below. 4 In the different classes they 

 are arranged in the order of susceptibility to the scale; those plants 

 that have been observed to be heavily infested are marked with an 

 asterisk (*). 



Small fruits : 



Muscadine grape (Vitis rotundi- 



folia) 

 Concord X Moore Early grape 

 (Vitis sp.) 

 Orchard fruits : 



*K a k i persimmon (Diospyros 



kaki) 

 *Satsuma orange (Citi^us noMlis 

 unshiu) 



* Seville orange {Citrus auran- 



tium ) 

 *Celeste fig (Ficus carica hort. 



var. ) 

 *Pecan (Hicoria pecan) 

 Ponderosa lemon (Citrus Union in 



hort. var.) 

 Orange (Citrus sinensis hort. 



var.) 

 Grapefruit (Citrus grandis) 

 Kumquat (Fortunella japonica) 

 Common pear (Pyrus communis) 

 Loquat (Eriobotrya japonica) 

 Mandarin orange (Citrus nobilis 



deliciosa) 

 Peach (Amygdalus persica) 

 Sand pear (Pyrus serotina) 

 Brunswick fig (Ficus carica hort. 



var.) 

 Mission fig (Ficus carica var.) 

 Brown Turkey fig (Ficus carica 



var.) 

 Myrobalan plum (Prunus cerasi- 



fcra) 

 Avocado (Persea americana) 

 Filbert (Corylus avellana) 

 Truck crops : 



Common string bean (Phaseolus 



vulgaris) 

 Okra (Hibiscus esculentus) 

 Lima bean (Phaseolus lunatus 



macrocarpus) 

 Field crops: 



Kudzu-bean (Pueraria tliunber- 



giana) 

 Flax (Linum sp.) 

 Johnson grass (Sorghum halepen- 



sis) 

 Ornamental plants: 



* Sweet osmanthus (Osmanthus 

 fragrans) 



Ornamental plants — Continued. 



Confederate-jasmine ( Trachelos- 



permum jasminoides) 

 Common camellia (Camellia ja- 

 ponica) 

 Japanese honeysuckle ( Lonicera 



japonica) 

 Rose (Rosa sp.) (Infestations 



have been found on 25 varieties. ) 

 Green rose (Rosa chinensis viri- 



diflora) 

 Banksian rose (Rosa banksiae) 

 Japanese privet (Ligustrum ja- 



ponicum ) 

 Hardy orange (Poncirus trifoli- 



ata) 

 India azalea (Azalea simsi) 

 Arabian jasmine (Jasminam sam- 



bac) 

 Common crapemyrtle (Lagerstroe- 



mia indica) 

 Chinese privet (Ligustrum si- 



nense) 

 Grecian laurel (Laurus nobilis) 

 Southern waxmyrtle (Myrica ceri- 



fera ) 

 Roughleaf dogwood (Cornus as- 



perifolia) 

 Flowering quince (Chaenomelcs 



lagenaria) 

 Golden California privet (Ligus- 

 trum ovalifoUum hort. var.) 

 Chinese lilac (Syringa chinensis) 

 Climbing fig (Ficus pumila) 

 Windmill palm (Tracliycarpus ex- 



celsa ) 

 Canary hair palm (Chamaerops 



hum His hort. var.) 

 Moreton bay fig (Ficus macro- 



phylla ) 

 Saucer magnolia (Magnolia sou- 



langeana) 

 Fiddleleaf fig (Ficus pandurata) 

 Sprenger asparagus (Asparagus 



sprengeri) 

 American beautyberry (Callicarpa 



americana) 

 Primrose jasmine (Jasminum pri- 



mulinum) 

 American wisteria (Kraunhia fru- 



tescens ) 



4 The writers acknowledge the assistance of R. S. Cocks, late Richardson professor of 

 botany at Tulane University, in the determination of these plants. 



