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Sec. It. DISEASES IffiNTIONED IN MEMORANDA TO PORT INSPECTORS. 
Unnumbered memoranda to inspectors in charge at maritime 
ports, or at Mexican Border ports, or at both, were issued from time 
to time over a period of several years. A few of these unnumbered 
memoranda were based on plant diseases, the pathogens being as 
follows: Aphelenchus avenae and k^, parietinus (now Aphelenchoides 
parietinus ) in potatoes (Memo, of Dec. 11, 1930); Aplanobacte|r 
michiganense on tomatoes (Feb. 6, 1931) J Elsinoe canavaliae (now 
E. phase oil ) on lima beans (Mar. 26 and Nov. 5* 1930» Jan« ^ht Mar. 
T6, and Mar. 18, 1931) J Neotylenchus abulbosus in potatoes (Dec. 11, 
1930); Puccinia spp. (reference being made to the 8 listed in 
Stevenson's manual as occurring on Salvia in Mexico - P. badia, 
P. delicatulum , ^. diutinum , _P. gentilis , P. infrequens , ^. mitrata, 
"p. nivea , and P. prospera )' on sage (Feb. 21, 1928) ; P. omithogali - 
thyrsoides on Ornithogalum thyrsoides (Nov. 28, 19307; Sphaceloma sp. 
(now known as Elsinoe ( Sphacelcgna ) pyri ) on apples and pears (July 3* 
1930, Feb. 20, 1931 ); £. perseae on avocado (Mar. 25 and July 3, 
1930); Tylenchus dipsaci (now Ditylenchus dipsaci ) in Narcissus and 
potatoes (Aug. 1, 1923 » Dec. 11, 1930); T. pratensis (now Pratylenchus 
pratensis ), in potatoes (Dec. 11, 1930) ;""Us tilago sp. on Omithogaliom " 
thyrsoides (Nov. 28, 1930). 
Of the present' numbered F.P.Q. series No. 83 concerns downy 
mildews of maize ( Sclerospora graminicola , S. macrospora , S. maydis ^ 
S. philippinens is , S_. sacohari , S_. sorghi , S_. spontanea and undetermined 
species; Nos. 102 and IO3 cover the import restrictions on hosts ( Rib^a , 
Grossularia , and Pinus ) of white pine blister rust ( Cronartium 
ribicola, also known as Peridennium strobi ) under Quar. 37; and No. I38 
removes restrictions on account of an unnamed nema fovind in 
Ornithogalum bulbs from South Africa. 
Sec. 5. QUARANTINE ACTION BASED ON DISEASES NOT COVERED IN SECS. l-U. 
Many foreign plant diseases not mentioned in any of the fore- 
going sections are of considerable interest to this division and have 
received more or less attention at some time. Some of these have been 
discussed during the course of hearings preceding issuance of the 
quarantines in which no pests are named specifically. Others have been 
the subject of correspondence with inspectors, with state quarantine 
officials, or with others in interest. Permits for several hosts have 
been refused administratively at times on account of diseases reported 
as occurring on them. There is no ready means of assembling a list 
of these diseases quickly but information regarding some of them at 
least will be prepared and issued from time to time. 
