Pithomyces flavus Berk. & Broom. (1873:100)

J., Pratibha & Prabhugaonkar, Ashish, 2015, Multi-gene phylogeny of Pithomyces with the sexual morph of P. flavus Berk. & Broome, Phytotaxa 218 (1), pp. 84-90 : 86-89

Pithomyces flavus Berk. & Broom. (1873:100)

= Astrosphaeriella vesuvius (Berk. & Broome) D. Hawksw. (1986:122) syn. nov.

= Sphaeria vesuvius Berk. & Broome ) (1873:127)

Colonies on substrate in the form of ascomata arising in groups of singles, black, erumpent with broken plant parts protruding from sides about 1 mm high, conical, beaked, often intermixed with anamorphic colonies which are effuse, cottony with yellow thick mat of aerial mycelium. Colonies on MEA dark brown with yellow slightly verruculose mycelia, attaining a diameter of upto 4 cm in 10 days. Upon section, ascomata unilocular, conical with thick peridium. Trabeculae 1–2 μm often branched. Asci with ocular chamber, 8 spored, cylindrical pedicillate, 100–150 × 8–13 μm. Ascospores fusiform, light brown, 3-septate, constricted at middle septa, 35–45 × 4–6.5 μm.

Anamorphic stage: Conidiophores mononematous, micronematous, mostly intercalary, sometimes deticulate, aseptate. Conidiogenous cells mono or polyblastic, rhexolytic, light brown, smooth, with upto 3.3 μm broad conidial attachment. Conidia solitary, dry, dark brown to black, obovate to oblong, veruculose to spinolose, with 3–5 mostly 4 longitudinal dark septa, 24–38 × 14–24 μm.

INDIA, Goa, Sanguem, Dudhsagar, on dry leaf sheaths of Calamus thwaitesii Becc. & Hook. , 19 September 2013, Pratibha J, ( HCIO 51811 Epitype, designated here); Ex-type culture: MTCC 12224; INDIA, Goa, Sanguem, Netravali, on dry leaf sheaths of Calamus thwaitesii Becc. & Hook. , 22 August 2007, Prabhugaonkar A., Herb. No. GUBH 52AP01; Holotype of Pithomyces flavus (K-M000165869).