Ectendomeliola otonephelii, Hosagoudar & Archana, 2010

Hosagoudar, V. B. & Archana, G. R., 2010, A new species of the genus Ectendomeliola (Meliolaceae) from Kerala, India, Journal of Threatened Taxa 2 (8), pp. 1092-1095 : 1093-1095

Ectendomeliola otonephelii sp. nov.

( Fig. 1 , Image 1 )

Materials examined: 14.xii.2007, on leaves of Otonephelium stipulaceum (Sapindaceae) , Moozhiyar forest, Patanamthitta, Kerala, India, coll. V. Gireesh Kumar et al TBGT 3941 (holotype), (MycoBank # 518657).

This species differs from E. walsurae in having longer mycelial setae and larger Perithecia.

Coloniae hypophyllae, subdensae, crustosae, ad 4mm diam., saepe confluentes. Hyphae subrectae vel anfractuae, irregulariter acuteque ramosae, formans irregulariter rete myceliales, laxe vel arte reticulatae, cellulae nodosae vel protuberentiae, 11-29 x 4-7 µm. Appressoria ectophytica vel endophytica, appressoria innata intra-epidermalis, saepe in cellulae mesophyllis, bicellulae, 11-24 µm longae; cellulae basilares cylindraceae vel cuneatae, 3-8 µm longae; cellulae apicales ovatae, globosae, oblongae, integrae vel angularis, 8-16 x 6-8 µm. Phialides paucae, mixtus appressoriis, oppositae, ampulliformes, 9-22 x 6-8 µm. Setae myceliales numerosae, simplices, rectae vel uncinatae, acutae, obtusae, dentatae vel furcatae ad apicem, ad 412µm longae. Perithecia superficialis, dispersa vel aggregata, globosa,ostiolata, ad 126µm diam.; ascosporae oblongae, cylindraceae, rectae vel leniter curvulae, 4-septatae, constrictus ad septatus, 35-42 x 11-15 µm.

Colonies hypophyllous, subdense, crustose, up to 4mm in diameter, often confluent. Hyphae substraight to crooked, branching irregular at acute angles, form irregular mycelial net, loosely to closely reticulate, cells

a - Appressorium; b - Phialide; c - Apical portion of the mycelial setae; d - Ascospores; e - Innate appressorium

1 - Hypophyllous colonies on the leaves; 2 - Crooked mycelium with appressoria with an intermitant mycelial knot; 3 - Perithecium; 4 - T.S. showing the arrangement of mycelium and appressoria;

5 - Subepidermal appressoria; 6 - Mycelium, appressorium and initials of perithecia; 7 - Phialides on the mycelium; 8 - Apical tip of mycelial setae; 9 - Ascospore

beaded to bulged, 11-29 x 4-7 µm. Appressoria ectophytic and endophytic, innate appressoria intra-epidermal, often in mesophyll cells, two celled, 11-24 µm long; stalk cells cylindrical to cuneate, 3-8 µm long; head cells ovate, globose, oblong, entire to angular, 8-16 x 6-8 µm. Phialides few, mixed with appressoria, opposite, ampulliform, 9-22 x 6-8 µm. Mycelial setae numerous, simple, straight to uncinate, acute, obtuse, dentate to furcate at the tip, up to 412µm long. Perithecia superficial, scattered to grouped, globose, ostiolate, up to 126µm in diameter; ascospores oblong, cylindrical, straight to slightly curved, 4-septate, constricted at the septa, 35-42 x 11-15 µm.

Figures

Figure 1. Ectendomeliola otonephelii sp. nov.

Image 1. Ectendomeliola otonephelii sp. nov.