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Based on the new International Code of Nomenclature for algae, fungi, and plants, specifically the effective deletion of Article 59, we provide a list of the revised scientific names of species in the genus Hemileia (Pucciniales). Five new combinations are proposed.
Coffee rust, International Code of Nomenclature for algae, fungi, and plants, rust fungi, unit nomenclature
At the 18th International Botanical Congress in Melbourne, July 2011, the members agreed to fundamental changes concerning the naming of fungi. Of particular interest is the ending of the dual nomenclature system for fungi as previously governed by Article 59 of the outdated International Code of Botanical Nomenclature (
The taxonomy of rust fungi has been confused partly because of the difficulty in determining sexual and asexual states and connecting the various states for an individual species. Many genera were defined based on the presence of teliospores that produce basidia. Also serving as the resting or overwintering stage, teliospores are produced on dikaryotic hyphae with meiosis taking place in the basidia that develop from germinating teliospores. Asexual states usually bearing aeciospores or urediniospores were placed in genera such as Aecidium and Uredo that generally lacked phylogenetic meaning i.e. these genera did not unite related species. Some rust species that lacked known teliospores were described using scientific names in the appropriate genus but these were considered invalid names because of the lack of teliospores as dictated by Article 59 of the International Codes of Botanical Nomenclature such as
The objective of this paper is to provide a list of scientific names of species in the rust genus Hemileia that brings the scientific names into accordance with the ICN. The genus Hemileia was recently revised by
This account is based on the
Mycobank: MB 801490
http://species-id.net/wiki/Hemileia_africana
The name Uredo africana 1889 has priority over the other basionym, Uredo ancylanthi 1903, thus Uredo africana is transferred to the genus Hemileia.
Mycobank: MB 801491
http://species-id.net/wiki/Hemileia_alafiae
Only the uredinial stage is known for this species that is herein placed in the genus Hemileia based on the comments in
Uredo aureospora 1960 has priority but it cannot be moved to Hemileia because that name already exists in the genus. For this reason the next oldest name Hemileia aureospora is the accepted scientific name for this species of which Uredo aureospora is a taxonomic synonym. Although the name Hemileia aureospora was previously considered to be not validly published because the type specimen lacked teliospores and thus violated Article 59 of the now outdated International Code of Botanical Nomenclature (ICBN) (
Based on the principle of priority, Hemileia deightonii is the correct name for this species. This name had been placed in Uredo because of the lack of teliospores as dictated by the ICBN in effect at that time but is now allowed by the ICN.
Uredo dioscoreae-aculeatae serves as the basionym for this species.
Because the presence of teliospores on the type material of Hemileia evansii could not be confirmed as required at that time,
Hemileia fadogiae is the correct name for this species because transferring the epithet having priority, Uredo fadogiae, into Hemileia would result in a later homonym. Because of this, it is necessary to use the next available epithet, in this case Hemileia fadogiae.
Because
The name Hemileia hansfordii Syd. has priority but was not used previously because of the lack of teliospores on the type specimen.
The names Uredo holstii and Uredo psychotriae-volkensii were both published on the same page and thus are considered equal in priority. Because Uredo holstii had already been placed in Hemileia, this basionym is considered to have priority.
Mycobank: MB 801492
http://species-id.net/wiki/Hemileia_kilimanjarensis
When
Mycobank: MB 801493
http://species-id.net/wiki/Hemileia_kumasensis
When
Prohibited from recognizing this epithet in Hemileia by the ICBN in effect at the time,
Because the type specimen of Uredo mildbraedii lacked teliospores,
Hemileia mussaendae Vienn.-Bourg. was the first name published for this species. Because the type specimen lacked teliospores,
Following the new ICN, Hemileia oxyanthi (1941) is the correct name for this species.
With the new ICN, Uredo phaji serves as the basionym for this species recognized in Hemileia.
Because Hemileia rhois is based on urediniospores,
When
Following the new ICN, Hemileia scitula is the correct name for this species.
With the new ICN, Hemileia secamones can be resurrected as the correct name for this species.
Following the new ICN, Hemileia smallii has priority even though the type specimen includes only the asexual stage of this species.
Mycobank: MB 801494
http://species-id.net/wiki/Hemileia_solaninum
Based on the comments in
Considering the new ICN and comments by
Because of the lack of teliospores on the type specimen of Hemileia thomasii,
Dr. Andrew Minnis, Center for Forest Mycology Research, Northern Research Station, U.S. Forest Service, Madison, Wisconsin, is acknowledged for helpful comments on an early draft of this paper based on his extensive knowledge of the various codes of nomenclature as they pertain to fungi.