The genus <i>Diorchidium</i> in the Neotropics

Hennen, Joe F.; Sotão, Helen Maria Pontes; Hennen, Mary M. Winkler

doi:10.1080/00275514.1998.12027008

Cited by 6 publications

(14 citation statements)

References 9 publications

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“…from West Africa, is morphologically very similar to D. copaiferae and parasitises a member of the same host family (D. welwitschii Baker f., Fabaceae). Though this has been noted by different authors (Hennen et al 1998;Cummins and Hiratsuka 2003), it has not been transferred to Diorchidium as yet. The Namibian rust shares with D. copaiferae and S. dalbergiellae morphological features such as urediniosori of the Malupa type, with basally united paraphyses (Fig.…”

Section: New Speciesmentioning

confidence: 72%

“…Hirats., and D. puiggarii Speg. (Hennen et al 1998). Three species are reported from Asia: D. koordersii Wurth from Java, Indonesia (Wurth 1908), D. taiwanensis Berndt from Taiwan (Berndt 1996), and D. polyalthiae Syd.…”

Section: New Speciesmentioning

confidence: 93%

“…However, conspicuous differences exist. The urediniospores of D. copaiferae are longer than in D. baphiae (28-42 μm up to 46 μm, according to Hennen et al 1998). The teliospores are shorter (30-42 μm up to 50 μm, according to Hennen et al 1998) and do not develop more than one apical papilla.…”

Section: New Speciesmentioning

confidence: 97%

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New observations of rust fungi (Uredinales) from northern Namibia

2007

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Three new rust species were collected in the northern part of Namibia: Diorchidium baphiae on Baphia massaiensis (Fabaceae), Phakopsora capriviensis on Bridelia cathartica (Euphorbiaceae), and Ravenelia acaciaenigrescentis on Acacia nigrescens (Fabaceae, Mimosoideae). For Newinia kigeliae, the uredinial stage is described for the first time. The following species are recorded for the first time from Namibia: Maravalia lonchocarpi, Puccinia magnusiana, P. xanthii, R. modesta, R. pretoriensis, Uromyces dactyloctenii, and U. pretoriensis. Furthermore, the new combination D. dalbergiellae is proposed, and the teleomorph name Ph. brideliae is validated by the description of the telial stage.

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Section: New Speciesmentioning

confidence: 72%

Section: New Speciesmentioning

confidence: 93%

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New observations of rust fungi (Uredinales) from northern Namibia

2007

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“…It is a macrocyclic rust that produces urediniospores with five equatorial germ pores, 26.3-36.8×19.3-33.3 μm, and teliospores with two probasidial cells, 29.8-38.5 × 18.9-33.3 μm, with smooth walls. Hennen et al (1998) considered Allotelium mirabile Syd. to belong to the genus Dicheirinia.…”

Section: Discussionmentioning

confidence: 99%

A new species, Dicheirinia panamensis, and new records of rust fungi from Panama

2007

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Based on a recent fieldwork in Panama, 25 species of rust fungi and several new hosts are reported for the first time from this country. Among the new records is one new species, Dicheirinia panamensis on Cojoba rufescens (Fabaceae). It differs from known species in the genus Dicheirinia by the presence of uredinia and telia without paraphyses, irregularly tuberculate urediniospores with two germ pores on the flattened sides, and tuberculate teliospores formed by three probasidial cells, subtended by a pedicel with three hyaline, apical cells.

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“…In addition to available monographs (dealing with rust taxa: e. g. Beenken et al 2012;Buriticá 1998Buriticá , 1999aBuriticá and Hennen 1980;Cummins 1940;Hennen and Pontes Sotão 1996;Hennen et al 1998;López-Franco and Hennen 1990;Salazar Yepes et al 2007; dealing with rusts of certain host taxa: e. g. Baxter 1973;Lindquist 1945Lindquist , 1955Lindquist , 1958, only those publications are cited that represent the most comprehensive and important works on the rust fungi of a given country. Admittedly, this selection is subjective but it will give the reader access to most of the remaining references.…”

Section: The Neotropical Rust Mycobiotamentioning

confidence: 99%

Species richness, taxonomy and peculiarities of the neotropical rust fungi: are they more diverse in the Neotropics?

Berndt

2012

Biodivers Conserv

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The species richness of rust fungi (Pucciniales or Uredinales) in the neotropics is reviewed. Species numbers are presented for all neotropical countries and rust-plantratios calculated. It is discussed whether the ratio for a given region can be explained by the species richness of vascular plants alone or whether it is caused by additional factors. In the first case, ratios should apply globally and vary only slightly; in the second case, more diverging ratios are expected. Observed ratios ranged between 1:16 and 1:124 in the neotropics. The large differences are certainly influenced by unequal levels of investigation, rendering interpretation difficult. Differences seem also to be influenced by the taxonomic composition of floras regarding the percentage of host families or genera bearing different numbers of rust species. This indicates that rust species richness is not driven solely by plant species richness. Ratios calculated for Switzerland, Austria and Japan are distinctly higher than for the neotropics indicating that certain temperate regions are proportionally richer in rust fungi than the neotropics. Uredinial states and short-cycled rust species prevail in the neotropics. The preponderance of uredinial states may be due to the heterogeneous spatial composition of certain vegetation types in the wet tropics. Shortcycled rusts may be adapted to a pronounced seasonality that can be encountered in many drier neotropical biomes. Future research needs to fill our knowledge gaps on the taxonomy and ecology of neotropical rust fungi are discussed.

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The genus Diorchidium in the Neotropics

Cited by 6 publications

References 9 publications

New observations of rust fungi (Uredinales) from northern Namibia

New observations of rust fungi (Uredinales) from northern Namibia

A new species, Dicheirinia panamensis, and new records of rust fungi from Panama

Species richness, taxonomy and peculiarities of the neotropical rust fungi: are they more diverse in the Neotropics?

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