phoenicis

Kirschsteiniothelia D. Hawksw., Bot J Linn Soc 91: 182 (1985).

Type species:
Kirschsteiniothelia aethiops (Saccardo) D. Hawksworth, Bot J Linn Soc 91: 185 (1985).

Marine species:
Kirschsteiniothelia phoenicis S.N. Zhang & K.D. Hyde, Mycosphere 9(2): 357 (2018).

MycoBank: MB554239                                                                                         Facesoffungi: FoF04093

Saprobic on Phoenix paludosa Roxb. Sexual morph Ascomata 135–160 μm high, 183–235 μm diameter (x ̅ = 143.8 × 201.7 µm, n = 10), black, scattered, subglobose to globose or slightly conical in appearance, superficial with apical papilla or plane, base remaining immersed, usually flattened. Peridium laterally 24–34 µm wide, composed of 5-6 layers of textura angularis, with dark brown outer layer cells and inner layers pale brown, cells around the ostiole with small lumina, reduced at the base, of 1–2 layers of cells. Pseudoparaphyses 0.8–1.5 µm wide, branched, embedded in a gelatinous matrix. Asci 70–112 × 14–24 µm (x ̅ = 84.7 × 19.4 µm, n = 15), 8-spored, bi-or tri- seriate in the middle of the ascus, cylindrical-clavate, straight or slightly curved, apically rounded, with a short pedicellate up to 5 µm long. Ascospores 18–27 × 5–7.5 µm (x ̅ = 21.3 × 6.6 µm, n = 36), brown, ellipsoid, rounded or slightly pointed at the ends, 1-septate, septum submedian and constricted, upper cell broader than the lower cell, each cell containing a distinct large guttule, smooth-walled, with a mucilaginous sheath. Asexual morph: undetermined.The description was based on Hyde et al. (2018).

Key to marine species in the genus:
No other marine Kirschsteiniothelia species are known

Key references:
Hyde KD, Chaiwan N, Norphanphoun C, Boonmee S, Camporesi E, Chethana KWT, Dayarathne MC, de Silva NI, Dissanayake AJ, Ekanayaka AH, Hongsanan S, Huang SK, Jayasiri SC, Jayawardena RS, Jiang HB, Karunarathna A, Lin CG Liu JK, Liu NG, Lu YZ, Luo ZL, Maharachchimbura SSN, Manawasinghe IS, Pem D, Perera RH, Phukhamsakda C, Samarakoon MC, Senwanna C, Shang QJ, Tennakoon DS, Thambugala KM, Tibpromma S, Wanasinghe DN, Xiao YP, Yang J, Zeng XY, Zhang JF, Zhang SN, Bulgakov TS, Bhat DJ, Cheewangkoon R, Goh TK, Jones EBG, Kang JC, Jeewon R, Liu ZY, Lumyong S, Kuo CH, McKenzie EHC, Wen TC, Yan JY, Zhao Q (2018). Mycosphere notes 169–224. Mycosphere 9(2): 271-430.

Hawksworth DL (1985). Kirschsteiniothelia, a new genus for the Microthelia incrustans-group (Dothideales). Bot J Linn Soc 91:181-202.

Chen CY, Wang CL, Huang JW (2006). Two new species of Kirschsteiniothelia from Taiwan. Mycotaxon 98:153-158.

Boonmee S, Ko Ko TW, Chukeatirote E, Hyde KD, Chen H, Cai L, McKenzie EHC, Jones EBG, Kodsueb R, Hassan BA (2012). Two new Kirschsteiniothelia species with Dendryphiopsis anamorphs cluster in Kirschsteiniotheliaceae fam. nov. Mycologia 104(3): 698-714.

Image:
Kirschsteiniothelia phoenicis (MFLU 18-0153, holotype). a Appearance of ascomata on host surface with ostiole. b Vertical section through the ascoma. c, d Structure of peridium. e Pseudoparaphyses. f, g Asci. h–k Ascospores. l Ascospore in India ink showing sheath. m-p Colony and mycelia growing on PDA. Scale bars: a = 100 μm, b = 50 μm, c, d, f, g, o, p = 20 μm, e, h–l = 10 μm, n = 1 mm.
The figure was taken from Hyde et al. (2018).

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  Fig 1