50 BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE [Jan.-March 
expeditions, foreign firms, and correspondents, whether by order or in ex- 
change. However, the following conditions must be strictly observed : 
(a) Such specimens must be entirely free from the foreign quarantined 
pests and diseases named in article 1 of this decree. This fact must be af- 
firmed on the face of the certificate issued by the plant quarantine or plant 
protection service of the country of origin. 
(h) The weight of individual samples must not exceed 5 kilograms, net. 
Note. — Other institutions and organizations may import potatoes from abroad 
for scientific research through the Bureau of Plant Introduction of the All- 
Union Institute of Plant Industry only. 
Art. 7. Irregular shipments returned or destroyed. — Potatoes and other plants 
arriving from abroad in violation of the provisions of this decree are returned 
or destroyed on the spot at the expense of the importer. 
Art. 8. Authorized port of entry. — The importation of potatoes and other 
plants of the family Solanaceae indicated in article 6 of this decree is per- 
mitted through Leningrad customs only. The customs may not allow the re- 
lease of such shipments without special certificates from the Quarantine 
Inspection Service. 
Art. 9. Imported materia} to he quarantined. — Imported specimens of potato 
tubers and planting material of other plants of the family Solanaceae, after 
having been examined at quarantine laboratories and determined to be free 
from quarantined articles, are sent to a quarantine nursery for a 2-year test 
in the ground. The period for such testing of cuttings and seed potatoes is 1 
year. 
In case the planting material appears to be infected with quarantined arti- 
cles while at the nursery, and the infection is of such a character that it 
cannot be disposed of by disinfection as prescribed by the Quarantine Inspec- 
tion Service, the AU-Union Institute of Plant Industry must destroy the in- 
fected material in the presence of a representative of the Quarantine Inspection 
Service and prepare a legal record of such action. 
Arts. 10 and 11 relate to the maintenance of quarantine nurseries and the 
procedure for the release of material from quarantine. 
QUARANTINE AGAINST WEEDS 
[Decree of Apr. 7, 1935] 
This quarantine applies to the following weeds: 
(a) Kinds not knoicn to exist in the Union of Soviet Socialist Rcpuhlies: 
Cenchrus trihuloides L. Eleusine aegyptiaca Desf. 
Cephalophora (Actinea) odorata A. Helianthus maximiliana Schrad. 
Gray. Manisuris granularis Sw. 
(&) Kinds not widely distributed in the Union of Soviet Socialist Re- 
publics: 
Ambrosia fnaritima (artemisiaefolia) Panicum latifolium 1^.= (Echinochloa 
L. macrocarpa). 
Centanria pieris Pall. Panicum orieola Hitchc. and Chase= 
Cephalaria syriaca Schrad. (Echinorhloa orizicola) . 
Cuscuta spp. Paspalum distichum L. 
Cynanehum ncutum L. Solanum heterodoxum Dun. 
Cynodon dactylon Pers. Solanum rostratnm Dun. 
Ci/perus rotundus L. Sophora alopecuroides L. 
Daythonia calycina Roem. and Schult. Sophora pachycarpa Schrenk. 
Tva xanthi folia 'Nutt. Sorghum halcpense L,.— (Andropogon 
Orabanrhe spp. halepensis) . 
Panicum capillare L. Thermopsis lanceolata Ait. 
In the event that inspection of imported plant material reveals the presence 
of weed seeds of quarantine importance, the material must be cleaned under 
the direction of the Quarantine Inspection Service. 
Tlie importation into the Union of Soviet Socialist Republics of species of 
weed plants, their seeds and other parts, is allowed for scientific research only 
and under a special permit of the Quarantine Inspection Service in each case. 
The importation of such material is allowed only through the Institute of 
Botany of the Academy of Sciences (B. I. N.) and the Bureau of Introduc- 
tion of the All-Union Institute of Plant Industry (V. I. R.). 
