FAMILY MARMORACEAE 



1201 



langsdorffii Weinm. ; .V. riistica L.; N. 

 tahacum L. 



Geographical distribution : United 

 States (California). 



Induced disease : In radish, systemic 

 chlorotic spotting followed by chlorotic 

 mottling of foliage; little or no leaf dis- 

 tortion; plants not stunted. 



Transmission : Bj' inoculation of ex- 

 pressed juice. No insect vector is 

 known ; not by the cabbage aphid, Brevi- 

 coryne brass icac (L.);the false cabbage 

 aphid, Lipaphis pseudobrassicae (Davis) ; 

 or the green peach aphid, Myzus persicac 

 (Sulz.) (APHIDIDAE). Not through 

 seeds from diseased radish plants. 



Thermal inactivation : At 65 to 68° C 

 in 10 minutes. 



Literature : Tompkins, Jour. Agr. Res., 

 58, 1939, 119-130. 



65. Marmor primulae spec. nov. From 

 New Latin Primula, generic name of 

 primrose. 



Common name : Primrose -mosaic virus. 



Hosts: PRIM UL ACE AE— Primula 

 obconica Hance. Experimentally, also 

 P. malacoides Franch. and P. sinensis 

 Lindl. 



Insusceptible species: BEGONIA- 

 CEAE — Begonia semper flor ens Link and 

 Otto. BORAGINACEAE—Mijosotis 

 alpestris Schmidt. CAMPANULA- 

 CEAE — Campanula medium L. CARY- 

 OPHYLLACEAE—Dianthus barbatus 

 L. CHENOPODIACEAE—Spinacia 

 oleracea L. COMPOSITAE—Bellis 

 perennis L. ; Callistephus chinensis Nees ; 

 Gerbera jamesonit Hook. ; Lactuca saliva 

 L. ; Senecio cruentus DC; Tagetes patula 

 L. CRUCIFERAE—Brassica oleracea 

 L. ; B. pe-tsai Bailey ; B. rapa L. ; Matthi- 

 ola incana R. Br.; Raphanus saiivus L. 

 CUCURBI TA CEA E~Cucu m is saiiv us 

 L.; Cucurbita pepo L. EUPHORBIA- 

 CEAE — Ricinus communis L. GR AM- 

 INE AE—Zea mays L. LEGUMINO- 

 SAE — Pisum sativum. L.; Vicia faba L. ; 

 Vigna sinensis (Torner) Savi. LO- 

 BEL I ACE A E— Lobelia hybrida Hort. 

 P AP AVER ACE AE—Papaver orientale 



L. PRIM UL ACE AE—Anagallis ar- 

 vensis L. ; Cyclamen indicum L. ; Primula 

 auricula L. ; P. veris L. RANUNCU- 

 LACEAE — Anemone coronaria L. ; Del- 

 phinium cultorum Voss; Ranunculus 

 asiaticus L. RESEDACEAE—Reseda 

 odorata L. ROSACEAE — Geum chiloense 

 Balb. SCROPHULARI ACE AE— An- 

 tirrhinum majus L. ; Pentstemon barbatus 

 Nutt. SOLA N ACE AE— Capsicum, fru- 

 tescens L. ; Datura stramonium L. ; Lyco- 

 persicon esculentum Mill.; Nicotiana 

 glutinosa L. ; N . tabacum L. ; Solanum 

 tuberosum L. TROPAEOLACEAE— 

 Tropaeolum majus L. UMBELLI- 

 FERAE — Apium graveolens L. VER- 

 BE N ACE A E— Verbena hybrida Voss. 

 V lOL ACE AE— Viola tricolor L. 



Geographical distribution : United 

 States (California). 



Induced disease : In Primula obconica, 

 chlorosis, stunting, rugosity with upward, 

 or occasionally downward, cupping of 

 leaves. Petioles and peduncles short- 

 ened; flowers reduced in size, broken in 

 color (white-streaked). Leaves coarsely 

 mottled with yellow-green, leaving green 

 islands ; tips of leaves sometimes nar- 

 rowed. 



Transmission : By inoculation of ex- 

 pressed juice, in the presence of 600-mesh 

 powdered carborundum. Not by aphids, 

 Myzus persicae (Sulz.) and M. circum- 

 flexus (Buckt.) {APHIDIDAE). No 

 insect vector is known. Probably not 

 through seeds. 



Thermal inactivation : At 50° C, not 

 48° C, in 10 minutes. 



Other properties : Infective after 24, 

 not 48, hours in vitro. Infective after 

 1:10 dilution. 



Literature : Tompkins and Middleton, 

 Jour. Agr. Res., 63, 1941, 671-679. 



66. Marmor caricae (Condit and 

 Home) comb. nov. {Ficivir caricae 

 Condit and Home, Phytopath., 81, 1941, 

 563.) From Latin carica, a kind of dried 

 fig. 



Common name : Fig-mosaic virus. 



Hosts : MORACEAE—Ficus carica L., 



