Chaetospermum artocarpi
Chaetospermum artocarpi (Nag Raj) Nag Raj, Coelomycetous Anamorphs with Appendage-bearing Conidia: 194 (1993)
≡ Chaetospermum elasticae var. artocarpi Nag Raj, Proc. Indian Acad. Sci., Sect. B 59: 50 (1964)
Saprobic on dead rotting leaves of Artocarpus integrifolia (Moraceae). Sexual morph: undetermined. Asexual morph: Conidiomata 300–600 µm diam., 150–300 µm high, salmon pink or fresh coloured to yellowish brown and waxy when dry, off white or pearl white and gelatinous when moist, pycnidial, solitary to gregarious or confluent, subepidermal in origin, globose to subglobose, unilocular, initially closed, ultimately opening by an iregular split in the apical wall, glabrous, thick-walled (Nag Raj 1993). Conidiomatal wall composed of thick-walled, hyaline to dark brown cells of textura intricata to textura oblita. Conidiophores arising from the innermost wall of conidiomata, hyaline, loosely aggregated, branched, septate at the base, invested in gel. Conidiogenous cells hyaline, subcylindrical to narrowly conic or irregular, discrete, bearing an apical cluster of up to 4 conidia resulting from holoblastic- sympodial proliferations. Conidia 16–22 × 4–7 µm (x = 18 × 6 µm; n = 20), hyaline, ellipsoidal to oblong ellipsoidal, or cylindrical, rounded at both ends, straight or slightly curved, smooth, bearing appendages, appendages 8–18 µm long, polar, mostly 3 at each end, occasionally 2, tubular, attenuated, branched, flexuous.
Material examined: India, Kamataka state, Balehonnur, Coffee Research Station, on dead rotting leaves of Artocarpus integrifolia (Moraceae), T.R. Nag Raj, 27 September 1962 (IMI 99088, type).
Chaetospermum artocarpi (IMI 99088, type) a–d Herbarium specimen note d additional slide. e, f Conidiophores. g–j Conidia. Scale bars e = 50 µm, f = 20 µm, g–j = 10 µm.
References:
Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.
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