1200 



MANUAL OF DETERMINATIVE BACTERIOLOGY 



Laubert, Gartenwelt, 31, 1927, 391 ; Pape, 

 ibid., 26, 1927, 329-331 ; 32, 1928, 116-117; 

 Pethybridge and Smith, Gard. Chron., 

 92, 1932, 378-379; Schmidt, Gartenwelt, 

 81, 1932, 40; Seeliger, Nachrichtenbl. 

 Deutsch. Pflanzenschutzdienst, 6, 1926, 

 63-64; Tuimann, Gartenwelt, 31, 1927, 

 375-376; Verplancke, Bui. 01. Sci. Acad. 

 Roy. de Belgique, Ser. 5, 18, 1932, 269- 

 281 (Rev. Appl. Mycol., 11, 1932, 649- 

 650). 



62. Marmor angliae H. {loc. cit., 48). 

 From Latin Anglia, England. 



Common name : Potato-paracrinkle 

 virus. 



Hosts: SOLA N ACE AE—Solanum tu- 

 berosum L., potato. Experimentally, 

 also Datura stramonium L., .Timson weed. 



Insusceptible species: SOLAN A- 

 CEAE — Nicotiana iabacum L., tobacco. 



Geographical distribution : England. 



Induced disease : In potato, masked in 

 all plants of the variety King Edward. 

 Chlorotic mottling with some necrosis in 

 the varieties Arran Victory and Arran 

 Chief. Chlorotic mottling only in Arran 

 Comrade, Majestic, and Great Scot pota- 

 toes. Two varieties, Sharpe's Express 

 and Epicure, are said to be resistant. 



Transmission: By grafts. Not by in- 

 oculation of expressed juice. No insect 

 vector is known. 



Literature: Dykstra, Phytopath., 26, 

 1936, 597-606; Salaman and Le Pelley, 

 Proc. Roy. Soc. London, Ser. B, 106, 

 1930, 140-175. 



63. Marmor aevi spec. nov. From 

 Latin aevum, old age, in reference to the 

 obvious involvement of old, but not of 

 young, delphinium leaves. 



Common name : Celery-calico virus. 



Hosts: CUCURBIT ACE AE—Ciict(- 

 mis sativus L., cucumber; C. melo L., 

 cantaloupe; Cucurbita pepo L., summer 

 crookneck squash. RANUNCULA- 

 CEAE — Delphinium chinensis ; D.formo- 

 sum, hardj" larkspur; D. grandiflorum; D. 

 parryi; D. zaliL SOLAN ACE AE—Ly- 

 copersicon esculentum. Mill., tomato. 



UM BELLI FERAE— Apium graveolens 

 L., celery. Experimentally, also SOLA- 

 NACEAE — Nicotiana tabacum L., to- 

 bacco; Petunia hybrida Vilm., petunia. 

 V lOL ACE AE— Viola cornuta L. 



Geographical distribution : United 

 States. 



Induced disease : In celery, clearing of 

 veins, puckering and downward cupping 

 of younger leaves, green islands of tissue 

 in lemon-yellow areas of outer leaves, 

 green and yellow zigzag bands on leaflets. 

 In delphinium, basal and middle leaves 

 with pale-orange, amber, or lemon-yellow 

 areas; younger leaves normal green; 

 chlorotic ring and line patterns. 



Transmission : By inoculation of ex- 

 pressed juice in the presence of finely 

 jiowdered carborundum. By aphids : 

 Aphis apigraveolcns Essig, celery leaf 

 aphid; A. apii Theob., celery aphid; A. 

 ferruginea-striala Essig, rusty-banded 

 aphid; A. gossypii Glov., cotton aphid; 



A. middletonii Thomas, erigeron root 

 aphid; Myzus circumflexus (Buckt.), lily 

 aphid; M. convolvidi (Kalt.), foxglove 

 aphid; M. persicae (Sulz.), green peach 

 aphid; Rhopalosiphum melliferum (Hot- 

 les), lioneysucklc aphid (APHIDI- 

 DAE). 



Literature : Severin, Hilgardia, IJ^, 

 1942, 441-464 ; Severin and Freitag, Phy- 

 topath., 25, 1935, 891 (Abst.); Hilgardia, 

 n, 1938, 493-558. 



64. Marmor raphani spec. nov. From 

 Latin raphanus, radish. 



Common name : Radish-mosaic virus. 



Hosts : CR UC I FERAE— Raphanus 

 sativus L., radish. Experimentally, also 

 CRUCIFERAE—Brassica oleracea L.; 



B. nigra (L.) Koch; B. alba (L.) Boiss; 

 B. arvensis (L.) Ktze. ; B. pe-tsai Bailey; 

 B. juncea (L.) Coss; B. rapa L.; B. ad- 

 pressa Boiss ; Capsclla bursa-pastoris (L.) 

 Medic; Malcomia maritima R. Br.; M. 

 bicornis DC. CHENOPODIACEAE— 

 Chenopodium album L.; C. murale L. ; 

 Spinacia oleracea L. RANUNCULA- 

 CEAE — Delphinium ajacis L. SOLA- 

 N ACE A E— Nicotiana glntinosa L. ; A'. 



