Pleosporales » Phaeosphaeriaceae » Dlhawksworthia

Dlhawksworthia alliariae

Dlhawksworthia alliariae (Thambug., Camporesi & K.D. Hyde) Wanas. & K.D. Hyde, in Wanasinghe et al., Index Fungorum 357: 1 (2018)

Replaced synonym: Hawksworthiana alliariae (Thambug., Camporesi & K.D. Hyde) Wanas. & K.D. Hyde, in Wanasinghe et al., Fungal Diversity: 10.1007/s13225-018-0395-7, [121] (2018)

Basionym: Dematiopleospora alliariae Thambug., Camporesi & K.D. Hyde, in Hyde et al., Fungal Diversity 2015: [89] (2015) [2016]

Index Fungorum number: IF 554391; Facesofungi number: FoF 04022

Etymology: The specific epithet alliariae refers to the host genus on which the fungus occurs.

Holotype: MFLU 15-0545. (taken from Hyde et al. 2016)

Saprobic on Alliaria petiolata. Sexual morph: Ascomata 210–350 μm high 9 175–300 μm diam. (x̄ = 270 × 224 μm, n = 6), solitary to gregarious, scattered, immersed, slightly erumpent, coriaceous, dark brown to black, subglobose to pyriform, thickened at the apex, ostiolate. Ostiole central, papillate, with a pore-like opening. Peridium up to 60 μm wide, thin at the sides, broad at the apex, comprising two strata, outer stratum composed of small, brown to dark brown, somewhat flattened, thick-walled cells of textura angularis, fusing and indistinguishable from the host tissues, inner stratum composed of few layers of lightly pigmented to hyaline cells of textura angularis. Hamathecium comprising 1–2 μm wide, septate, cellular pseudoparaphyses, embedded in a gelatinous matrix. Asci 100–125 × 10–12 μm (x̄ = 110 × 10.9 μm, n = 15), 8-spored, bitunicate, fissitunicate, cylindrical, pedicellate, rounded at the apex, with a distinct ocular chamber. Ascospores 14–17.5 × 6.4–8.4 μm (x̄ = 15.5 × 7.5 μm, n = 35), uniseriate, partially overlapping, initially hyaline, becoming yellowish-brown at maturity, ellipsoidal to fusiform, muriform, transversely 3-septate, with 0–3(–4) vertical septa, slightly curved, deeply constricted at the central septum, rounded at the ends, smooth-walled, lacking a mucilaginous sheath. Asexual morph: Undetermined.

Culture characteristics: Ascospores germinating on PDA within 24 h and producing germ tubes from several cells. Colonies on PDA, reaching 10–12 mm diam. after 7 days at 25 °C, surface dirty white to buff, spreading with moderate aerial mycelium, and even, smooth and entire margins.

Material examined: ITALY, Forlı`-Cesena [FC] Province, Ridracoli—Bagno di Romagna, on dead stem of Alliaria petiolata (Brassicaceae), 18 November 2012, Erio Camporesi IT 915 (MFLU 15-0545, holotype); ex-type living culture, MFLUCC 13-0070, ICMP.


Notes: Dematiopleospora alliariae is introduced by Hyde et al. (2016) and further analyses conducted by Wanasinghe et al. (2018), they have synonymized D. alliariae as Hawksworthiana alliariae and introduce it as the type species for Hawksworthiana. Currently a nomenclatural change was applied to Hawksworthiana alliariae as Dlhawksworthia alliariae.