Wednesday, January 2, 2019

[Fungi • 2019] Enterographa assamica (Roccellaceae sensu lato) • A New Species from North-East India

Enterographa assamica  Pooja Gupta, S. Joseph & G.P. Sinha

in Gupta, Joseph & Sinha, 2019. 

 A new species Enterographa assamica, in the family Roccellaceae sensu lato is described from Assam, India. It is characterized by whitish grey thallus, rounded to elongate ascomata with yellowish-white thalline margin and presence of lichexanthone and confluentic acid in the thallus. A key to all the known species of Enterographa in India is also provided.

 KEY WORDS: Arthoniales; Assam; India; Enterographa assamica; Lichenized Ascomycota; Roccellaceae s. l.; Taxonomy. 

Fig. 1. Enterographa assamica.
A. Thallus with ascomata; B & C. Asci with ascospores.
 Scale: A. 1 mm; B & C. 10 µm.

Enterographa assamica Pooja Gupta, S. Joseph & G.P. Sinha sp. nov. 

 Diagnosis: Thallus corticolous, epiperidermal; ascomata rounded to elongate; 0.25–0.55 mm diam., if rounded; 0.5–1(–1.2) × 0.2–0.5 mm, if lirelliform; asci clavate, 8˗spored, 60–80 × 15–19 μm; ascospores hyaline, acicular, transversely 7–11˗septate, slightly curved at the end, (39–)48–55(–60) × 2–3 μm; confluentic acid and lichexanthone present.  

Etymology: The specific epithet refers to the Indian state, Assam, where it was discovered.  

Pooja Gupta, Siljo Joseph and Gopal Prasad Sinha. 2019. Enterographa assamica, A New Species from North-East India. Taiwania. 64(1); 1-3. DOI: 10.6165/tai.2019.64.1