Authors:
Y. Joshi Department of Botany, University of Rajasthan, Jaipur - 302004, Rajasthan, India

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P. Bansal Department of Botany, University of Rajasthan, Jaipur - 302004, Rajasthan, India

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A new parasitic lichenicolous fungus Knudsenia, with the type species, K. flavoparmeliarum, growing on the thallus of the corticolous lichen Flavoparmelia caperata in subalpine and alpine regions of Central Himalaya (Uttarakhand, India) is described, illustrated, and compared with other morphologically similar lichenicolous fungi. It is characterised by having inconspicuous galls; stromatic ascomata with sterile brownish black to black tissue which is K+ majenta, N–, I–; hymenial gel K/I–; exciple evident; paraphyses simple to sparsely branched, apically not pigmented; asci bitunicate, elongate, clavate to subcylindrical with an indistinct ocular chamber with a very short stalk, 8-spored, K/I+ reddish brown; ascospores hyaline, spherical to ellipsoid at maturity, simple to rarely 1-pseudoseptate [(9.0–)9.5–10.5–11.5(–12.0) × (1.0–)1.2–1.5–2.0(–2.5) µm], I–, perispore absent. Since the species lacks molecular data, hence, it was tentatively placed in the family Planistromellaceae pending further studies.

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2023  
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