Asterinales » Asterinaceae » Asterostomella

Astrosphaeriella neostellata

Astrosphaeriella neostellata D.Q. Dai, Phookamsak & K.D. Hyde, Fungal Diversity 74: 172 (2015)

Facesoffungi number: FoF 01226

 

Sexual morph: Ascomata 300–700 μm diameter, 250–500 μm high, black, scattered, solitary, 2–3-gregarious, erumpent to superficial, breaking the host tissue, conical, uni-loculate, glabrous, carbonaceous, with centrally ostiole. Peridium 40–50 μm wide, of unequal thickness, poorly developed at the base, composed of dark brown to black pseudoparenchymatous cells arranged in textura angularis. Hamathecium comprising dense, 1–1.5 μm wide, branched, filamentous pseudoparaphyses, anastomosing at the top, embedded in gelatinous matrix. Asci 130–200 × 10–14 μm ( = 165 × 12 μm, n = 20), 8-spored, bitunicate, fissitunicate, cylindrical to clavate, with a long furcate pedicel, apically rounded with an indistinct ocular chamber. Ascospores 40–50 × 4.5–5.5 μm ( = 45 × 5 μm, n = 20), overlapping 1–2-seriate, hyaline to subhyaline, fusiform, tapering at both ends, rarely aseptate, normally 1-septate, constricted at the septum, smooth-walled, guttulate, surrounded by a thin gelatinous sheath. Asexual morph: Undetermined.

 

Culture characteristics: Ascospores germinating on PDA within 48 h, at 23–28 . Colonies growing on PDA, reaching 15 mm diameter in 2 weeks at 23–28 , cottony, circular, umbonate, pale brown at the middle, dark brown at the margin from above; dark brown from below. Mycelium superficial to immersed in media, with dark brown, branched, septate, smooth hyphae.

 

Host and habitat: on dead culms of bamboo (Phookamsak et al. 2015, Hyde et al. 2020).

 

Known distribution: Thailand, Chiang Rai Province (Phookamsak et al. 2015), China, Yunnan Province (Hyde et al. 2020).

 

Material examined: China, Yunnan Province, Chuxiong Yi Autonomous Prefecture, Chuxiong City, Biji Village, on dead bamboo culms, 5 February 2019, H.B. Jiang, CX003 (KUN-HKAS 101775, new geographic record), living culture (KUMCC 19–0218).

 

GenBank Accession No: ITS: MN629351, LSU: MN629352, SSU: MN629353, tef1: MN635787.