Puccinia heliconiae onHeliconia sp. in Papua New Guinea
J. R. Liberato A
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B
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E
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J. D. Ray C
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T. Gunua D
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Spermogonia and aecia absent. Uredinia hypophyllous, corresponding to brown spots on the upper leaf surface, numerous, closely grouped, coalescent, cinnamon-brown, early exposed, pulverulent; urediniospores 20-31 18-30 mm, brown, rounded to pyriform, noticeably echinulate, pores obscure, wall 1-2.5 mm thick. Telia absent. Specimen examined: Papua New Guinea, DPI Complex, Aitape, Sanduan Province, 3 8
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E, on Heliconia sp., Nov 2006, J.D. Ray (BRIP 49824)
Puccinia heliconiae is reported for the first time from Papua New Guinea. A description of the rust fungus and host symptoms are provided. Heliconia (Heliconiaceae) contains ~180 species of medium to large erect banana-like plants from Central and South America and some islands in the South Pacific (Marcsik 2003). Many of these species are cultivated throughout the tropics and subtropics as ornamentals.
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under stereomicroscope (BRIP
Puccinia heliconiae on Heliconia
Prior to this report, the geographical distribution of Puccinia
heliconiae was thought to be restricted to the Americas, where it
has been reported in Brazil (Vigas 1945; Lins and Coelho 2004;
Hennen et al. 2005), Colombia (Pardo-Cardona 2006), Puerto
Rico, Panama and in the Martinique isle (Arthur 1918).
According to Hennen et al. (2005) this rust has also been
reported from Ecuador, Venezuela, Trinidad & Tobago and
Mexico. This discovery represents the first report of
P. heliconiae in PNG as it was not recorded by Shaw (1984)
and Hyde and Philemon (1994). Moreover, this is the first report
of P. heliconiae outside the Americas.
Albuquerque (1971) described Uredo rectangulata
F.C. Albuq. [as retangulata] on Heliconia psittacorum
[reported as pesittacorum] in Brazil. Uredo rectangulata
differs from P. heliconiae as the former has amphigenous
uredinia with thick-walled, smooth paraphyses, measuring up
to 55 mm. Buritic (1999) transferred U. rectangulata to
Physopella rectangulata (F.C. Albuq.) Buritic & Hennen and
considered it the anamorph of Cerotelium rectangulata Buritic
& Hennen, which was described on Ischnosiphon abciquus
(Ruage) Koernike (Marantaceae).
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