36 BULLETIN 1366, U. S. DEPARTMENT OF AGRICULTURE 



CITRUS — Continued. 



C. aurantium, sour, or Seville, orange — Continued. 

 Peniciliium glaucum Lk., blue-mold rot. La. 

 Phomopsis citri Fawc, stem-end rot, melanose. Fla., Ala. 

 Phytophthora terrestris Sherb., foot-rot. Fla. 



Sporotrichum citri Butl. (Sphaceloma fawcettii A. Jenkins), scab. Gulf States. 

 Chlorosis, undet. Calif. 

 Die-back, undet. Fla. 

 C. grandis, grapefruit. 



Bacterium citrarefaciens H. A. Lee (Phytomonas citrarefaciens (Lee) Com. 



S. A. B.), citrus blast. Calif. 

 B. citri (Hasse) Jehle {Phytomonas citri (Hasse) Com. S. A. B.), citrus 



canker. Fla., Ala., La., Miss. 

 Cephaleuros virescens Kze., algal leaf-spot. Fla. 

 Colletotrichum gloeosporioides Penz. (Glomerella cingulata (Ston.) Spauld. and 



Schrenk), associated with citrus wither-tip. Fla., Ala., Tex., Miss. 

 Diplodia natalensis Ev., stem-end rot. Fla. 



Phomopsis citri Fawc, stem-end rot, melanose. Fla., Tex., Ariz. 

 Pythiacystis citrophthora E. H. and R. E. Smith, brown-rot. Ariz. 

 Sclerotium rolfsii Sacc, seedling blight (greenhouse). Ala. 

 Sporotrichum citri Butl. (Sphaceloma fawcettii A. Jenkins), scab. Fla.. Ala. 

 Tylenchus semipenetrans Cobb, root nematode. Fla., Calif. 

 Die-back, undet. Fla. 

 Gummosis, undet. Fla. 

 <7. limonia, lemon. 



Alternaria sp., fruit-rot. Calif. 



Armillaria mellea (Vahl) Quel., root-rot. Calif. 



Bacterium citrarefaciens H. A. Lee (Phytomonas citrarefaciens ^Lee) Com. 



S. A. B.), citrus blast. Calif. 

 B. citri (Ha^'e) Jehle (Phytomonas citri (Hasse) Com. S. A. B.), citrus 



canker. Fla., Ala., La., Tex. 

 Botrytis cinerea Auct., gray-mold rot. Calif. 

 Colletotrichum gloeosporioides Penz. (Glomerella cingulata (Ston.) Spauld. 



and Schrenk), associated with citrus wither-tip. Fla., Tex. 

 Gloeosporium spegazzinii Sacc, leaf-scorch. Fla. 

 Oospora citri-aurantii C. O. Smith, sour-rot. Calif. 

 Peniciliium sp., blue-mold rot. Calif. 

 Phomopsis calif ornica Fawc, rot. Calif. 

 P. citri Fawc, stem-end rot, melanose. Fla. 



Phyllosticta hesperidearum (Catt.) Penz., leaf-spot. Colo, (greenhouse). 

 Phytophthora terrestris Sherb., foot-rot. Fla. 



Pythiacystis citrophthora E. H. and R. E. Smith, brown-rot. N. J. (green- 

 house), Calif. 

 Sclerotinia sclerotiorum (Lib.) Mass., cottony rot. Calif. 

 Sporotrichum citri Butl. (Sphaceloma fawcettii A. Jenkins), scab. Fla. 

 Die-back, undet. Fla. 

 Gummosis, undet. Calif. 

 Internal decline, nonpar. Calif. 

 C. nobilis i king orange, tangerine. 



Bacterium citri (Hasse) Jehle (Phytomonas citri (Hasse) Com. S. A. B.), 



citrus canker. Tex. 

 Colletotrichum gloeosporioides Penz. (Glomerella cingulata (Ston.) Spauld. 



and Schrenk), associated with citrus wither-tip. Miss., Calif. 

 Oidium tingitaninum C. N. Carter, powdery mildew. Calif. 

 Phomopsis citri Fawc, stem-end rot, melanose. Fla. 



Sporotrichum citri Butl. (Sphaceloma fawcettii A. Jenkins), scab. Fla., Miss. 

 Die-back, undet. Fla. 

 C. nobilis unshiu, Satsuma orange. 



Alternaria citri N. B. Pierce, black-rot. Ala., Calif. 



Bacterium citri (Hasse) Jehle (Phytomonas citri (Hasse) Com. S. A. B.), 



citrus canker. Fla. 

 Colletotrichum gloeosporioides Penz. (Glomerella cingulata (Ston.) Spauld. 



and Schrenk), associated with citrus wither-tip. Ala. 

 Diplodia natalensis Ev., stem-end rot. Ala., Miss. 

 Oospora sp., soft-rot. Ala., Miss. 



