Cronartium flaccidum. [Descriptions of Fungi and Bacteria].

Author(s):  
J. E. M. Mordue

Abstract A description is provided for Cronartium flaccidum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Pinus spp. including P. sylvestris, P. pinaster, P. pinea, P. halepensis, P. wallichiana and most hard pines. Alternate hosts include species of Asclepias, Impatiens, Loasa, Melampyrum, Nemesia, Paeonia, Pedicularis, Ruellia, Schizanthus, Tropaeolum, Verbena, Vincetoxicum; Vincetoxicum officinale is an important alternate host in Europe. DISEASE: Scotch pine blister rust, resin canker. GEOGRAPHICAL DISTRIBUTION: Throughout Europe and Asia to the Far East, wherever susceptible hosts occur. TRANSMISSION: Pycniospores by insects attracted by sugary exudate; other spores are directly air-borne.

1993 ◽  
Vol 71 (3) ◽  
pp. 519-521 ◽  
Author(s):  
B. J. van der Kamp

Records of uredinia and telia production on the alternate hosts of Cronartium coleosporioides in British Columbia and inoculation of Castilleja miniata with aeciospores collected from various locations showed that rust isolates from dry areas of the interior of British Columbia do not produce uredinia and may have lost the ability to do so. Collections from somewhat wetter areas produced uredinia or mixtures of uredinia and telia immediately following aeciospore inoculations, and field collections from such areas in June commonly had mixtures of uredinia and telia. Loss of the uredinial stage may be a response to climates that are often unsuitable for the spread or survival of the rust on the alternate host. Key words: stalactiform rust, uredinia, telia, rust life cycle.


Hydrobiologia ◽  
1995 ◽  
Vol 305 (1-3) ◽  
pp. 63-70
Author(s):  
Masaharu Kawakatsu ◽  
Oleg A. Timoshkin ◽  
Nina A. Porfirjeva ◽  
Masayuki Takai

Hydrobiologia ◽  
1995 ◽  
Vol 305 (1-3) ◽  
pp. 55-61 ◽  
Author(s):  
Masaharu Kawakatsu ◽  
Iwashiro Oki ◽  
Sachiko Tamura

1940 ◽  
Vol 18c (9) ◽  
pp. 469-488 ◽  
Author(s):  
Ivan H. Crowell

This study of geographical distribution shows that species of the genus Gymnosporangium are found in the northern hemisphere only and occur most abundantly in the temperate portion. Each of the three major continents contains a distinctive Gymnosporangium flora and, with the exception of three species called the "tricontinental species", species occur naturally in one continent only. The genus contains about 48 species; 33 occur in North America, 15 in Asia and 6 in Europe (including the three tricontinental species in each case). Explanations of the types of geographical distribution of the North American species are given under four categories: (i) species that occupy all potential territory covered by the coincident ranges of their alternate hosts, (ii) species that are confined by the range of their "primary" telial host, (iii) localized species that are confined within a portion of the coincident ranges of their alternate host, and (iv) widely distributed species that are not limited in their range by either alternate host group.


Zootaxa ◽  
2011 ◽  
Vol 3112 (1) ◽  
pp. 1 ◽  
Author(s):  
TATIANA G. ROMANKOVA ◽  
YULIA V. ASTAFUROVA

The genus Panurginus Nylander of the Asian part of Palearctic is revised for the first time. 14 species are listed for Siberia, the Far East of Russia, Kazakhstan, Mongolia, and Northern China. Lectotypes for P. alticolus F. Morawitz, 1876, P. herzi F. Morawitz, 1891 and P. labiatus Eversmann, 1852 are designated. Panurginus niger Nylander, 1848, the type species of the genus, was studied for the first time after it was described. Panurginus dubius Osytchnjuk, 1995 is a junior synonym of P. niger Nylander, 1848. Panurginus alticolus, P. crawfordi Cockerell, 1914, P. herzi F. Morawitz, P. labiatus, P. romani Aurivillius, 1914, P. niger and P. nigripes F. Morawitz, 1880, are redescribed and seven new species are described: P. alpotanini, P. arsenievi, P. kozlovi, P. kropotkini, P. mikhno, P. muraviovi, P. obruchevi. In Russia, P. alticolus and P. labiatus are first recorded for Siberia; P. alticolus is a new record, and one species is newly described from Kazakhstan; P. niger and P. herzi are first recorded, and two species described from Mongolia. A key to the 14 species with 118 illustrations, and annotated list along with data on types, synonymies, general geographical distribution, the material examined and descriptions for all species is presented.


1935 ◽  
Vol 26 (4) ◽  
pp. 475-486 ◽  
Author(s):  
W. J. Hall

Such knowledge as we have of the family Lacciferidae is very largely embodied in an excellent monograph published in 1923 and 1925 by J. C. Chamberlin (Bull. Ent. Res. 14, pp. 147–212 and 16, pp. 31–41). The comparatively speaking limited geographical distribution of the various generic groups is well brought out in this monograph. Thus, for instance, the genera Tachardiella and Austrotachardiella are apparently confined to North and South America, Metatachardia to Ceylon, Austrotachardia to Australia, Tachardia to India and the Far East. Chamberlin further states (p. 149) “ in general it may be said that the species of this group are tropical or sub-tropical, apparently reaching their greatest abundance in regions of limited rainfall.” How far this comparatively limited and well-defined zonal distribution of the various genera will hold good as further material is collected will prove of the greatest interest.


Author(s):  
Masaharu Kawakatsu ◽  
Oleg A. Timoshkin ◽  
Nina A. Porfirjeva ◽  
Masayuki Takai

Author(s):  
G. C. Ainsworth

Abstract A description is provided for Tilletia barclayana. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Oryza sativa (rice) and species of Brachiaria, Digitaria, Eriochloa, Panicunr and Pennisetum. DISEASE: Rice smut (black smut, kernel smut, bunt of rice). A disease of variable incidence but at times responsible for economically important losses. GEOGRAPHICAL DISTRIBUTION: Africa (Sierra Leone), Asia (widespread in India and the Far East), N. (Mexico), C. (Trinidad) and S. (British Guiana, Venezuela, British Honduras) America, Pacific (Fiji, Norfolk lsl.); see CMI Map 75, 1945 (as N. horrida). TRANSMISSION: Infection occurs via the opening flowers and the disease is seed borne (Noble et al., An annotated list of seed-borne diseases, 1958, p. 54). It can survive for several years in soil or seed (40: 465).


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