Halodiatrype mangrovei (K.D.Hyde) Dayarathne & K.D.Hyde

Dayarathne, Monika C., Wanasinghe, Dhanushka N., Devadatha, B., Abeywickrama, Pranami, G, E. B., Jones, areth, Chomnunti, Putarak, Sarma, V. V., Hyde, Kevin D., Lumyong, Saisamorn, C., Eric H. & Mckenzie, 2020, Modern taxonomic approaches to identifying diatrypaceous fungi from marine habitats, with a novel genus Halocryptovalsa Dayarathne & K. D. Hyde, gen. nov., Cryptogamie, Mycologie 20 (3), pp. 21-67 : 54-56

Halodiatrype mangrovei (K.D.Hyde) Dayarathne & K.D.Hyde

( Fig. 16 )

Mycosphere 7 (5): 612-627 (2016).

Cryptosphaeria mangrovei K.D.Hyde, Transactions of the Mycological Society of Japan 34 (3): 311 (1993).

MYCOBANK. — MB 551350.

FACESOFFUNGI NUMBER. — FoF 04598.

MATERIAL EXAMINED. — Thailand, in intertidal mangrove on dead roots of Rhizophora apiculata, K.D.Hyde (holo-, BRIP[BRIP-19869]).

DISTRIBUTION. — Thailand.

.

DESCRIPTION

Sexual morph

Ascomata. 520-990 × 740-880 µm, dark brown to black, solitary to gregarious, immersed in the darken pseudostroma, globose to subglobose, uni-loculate, papillate, ostiolate.

Ostioles. Central, ostiolar canal filled with periphyses.

Peridium. 90-135 µm wide, composed of several layers of dark brown to black cells of textura angularis, outer cell layer fusing with the host cells.

Paraphyses. 1.5-3 µm wide, arising from base of perithecia, long, narrow, unbranched, septate, guttulate, narrowing and tapering towards the apex.

Asci. 70-90 × 10-12 µm (ẍ = 80 × 11 µm, n = 20), 8-spored, bior triseriate, clavate, unitunicate, extremely thin-walled with an indistinct apical thickening, somewhat slightly truncate, without any apical apparatus, apical oil globules in immature asci, J-.

Ascospores. 10-15.8 × 3-5 µm (ẍ = 14.5 × 4 µm, n = 20), allantoid or subinequilateral, 0-1 septate, hyaline when immature, yellowish to yellowish brown at maturity, side walls thickened, guttulate, without appendages.

Asexual morph

Undetermined.

NOTES

Cryptosphaeria mangrovei , which was reported from dead roots of Rhizophora apiculata in intertidal mangroves in Thailand ( Hyde 1993 ) is characterized by clavate, extremely thin-walled, slightly truncate asci, with an indistinct apical thickening, lacking an apical ring, and with allantoid or subinequilateral, one-celled guttulate ascospores. This species is similar to species of Halodiatrype in having allantoid or subinequilateral, light brown ascospores and was collected from intertidal mangrove on dead roots of Rhizophora apiculata (Rhizophoraceae) . Therefore, we make the new combination of Halodiatrype mangrovei .

Figures

FIG. 16. — Halodiatrype mangrovei (K.D.Hyde) Dayarathne & K.D.Hyde (BRIP 19869 – holotype); A, herbarium material; B, C, appearance of ascomata on host surface; D-F, vertical section through ascoma; G, vertical section through neck region; H, peridium; I, paraphyses; J-L, asci; M-P, ascospores. Scale bars: B, E, F, 500 μm; C, 1000 μm; D, 200 μm; G, 50 μm; H, K-L, 20 μm; M-P, 10 μm.