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A new lichenicolous Arthonia species (Arthoniaceae) on Diorygma from India

Published online by Cambridge University Press:  07 May 2013

Santosh JOSHI ,
Dalip K. UPRETI  and
Sanjeeva NAYAKA
Santosh JOSHI
Affiliation:
Lichenology Laboratory, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow (UP)-226001, India. Email: upretidk@rediffmail.com
Dalip K. UPRETI*
Affiliation:
Lichenology Laboratory, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow (UP)-226001, India. Email: upretidk@rediffmail.com
Sanjeeva NAYAKA
Affiliation:
Lichenology Laboratory, CSIR-National Botanical Research Institute, Rana Pratap Marg, Lucknow (UP)-226001, India. Email: upretidk@rediffmail.com
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Abstract

A new lichenicolous ascomycete, Arthonia diorygmae, is described from the thallus and ascomata of Diorygma junghuhnii. The new species is characterized by rounded to irregular, applanate to convex ascomata up to 0·3 mm in diameter, a slightly whitish pruinose disc, transversely 1-septate, hyaline to greyish ascospores (13–)14–15(–21)×5–7 µm, and its lichenicolous habitat. It is known from the subtropical region of the Western Ghats in India and appears to be widespread due to the large distribution of the host species.

Keywords

GraphidaceaelichenparasitetaxonomyWestern Ghats
Type
Articles
Information
The Lichenologist , Volume 45 , Issue 3 , May 2013 , pp. 323 - 327
Copyright
Copyright © British Lichen Society 2013

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