Schiffnerula hoddurensis, Hosagoudar & Thimmaiah & Jayashankara, 2011

Hosagoudar, V. B., Thimmaiah, C. Jagath & Jayashankara, M., 2011, Schiffnerulaceous fungi of Kodagu, Karnataka, India, Journal of Threatened Taxa 3 (12), pp. 2268-2671 : 2270-2271

Schiffnerula hoddurensis sp. nov.

( Image 4 )

Material examined: 16.xi.2009, on leaves of Vitex negundo L. ( Vitaceae ), Hoddur, Kodagu, Karnataka, C. Jagath Thimmaiah TBGT 5698 (holotype), (MycoBank 564012).

Coloniae epiphyllae,densae, ad 7mm diam. Hyphae flexuosae, suboppositae vel alternatae acuteque vel subacuteque ramosae, arte vel laxe reticulatae, cellulae 23–28 x 4–6 µm. Appressoria dispersa,

a - Appressoriate mycelium; b - Questieriella conidia on conidiophores; c - Conidiophore; d - Thyriothecia;

e - Ascospore

substraight, branching alternate to opposite at acute to wide angles, loosely reticulate, cells 16–20 x 5–8 µm. Appressoria unilateral, alternate to rarely opposite, ovate, globose, mammiform, broad based, entire, 10-15 x 7-10 µm. Conidiophores of Questieriella produced lateral to the hyphae, simple, straight, micronematous, mononematous, 0–2-septate, 20–25 x 4–6 µm; conidiogenous cells terminal, monoblastic, integrated, solitary, ellipsoidal; conidia straight to curved, pale brown, 3-septate, mostly scattered in the colonies, 20–25 x 4–6 µm. Thyriothecia numerous, orbicular, central portion dissolved by exposing asci but the marginal cells remain intact and radiating, up to 50µm in diameter; asci oval, globose, octosporous, up

a - Appressoriate mycelium; b - Colony formed from the Questieriella conidia ; c - Initial state of thyriothecium;

d - Totally opened thyriothecium with the remnants of marginal cells; e - Germinating Questieriella conidia ;

f - Ascospore; g-h - Germinating ascospores

unilateralis vel alternata, raro opposita, unicellularis, globosa, mammiformes, crassa posita, integra, raro angularis, 5–10 x 6–11 µm. Conidia Questieriella pauca, dispersa, 3-septata, leniter constrictus ad septata, recta vel curvula, attenuatae ad ambi apicem, cellulae terminalis acutae vel subacutae, 17–36 x 8–10 µm. Thyriothecia dispersa, orbicularis, nigra ad initio, portionio centralis dissolutus ad maturitatus; asci globosi vel ovati, 15–18 µm diam.; ascosporae brunneae, conglobatae, uniseptatae, 23–26 x 11–13 µm.

Colonies epiphyllous, dense, up to 7mm in diameter. Hyphae flexuous, branching subopposite to alternate at acute to subacute angles, closely to loosely reticulate, cells 23–28 x 4–6 µm. Appressoria scattered, unilateral to alternate, rarely opposite, unicellular, globose, mammiform, broad based, entire, rarely angular, 5–10 x 6–11 µm. Questieriella conidia few, scattered, 3-septate, slightly constricted at the septa, straight to curved, taper towards both ends, end cells acute to subacute, 17–36 x 8–10 µm. Thyriothecia scattered, orbicular, initially charcoal black, central portion dissolved at the centre at maturity; asci globose to ovate, 15–18 µm in dia.; ascospores brown, conglobate, uniseptate, 23–26 x 11–13 µm.

Sarcinella jabalpurensis R.C. Rajak & Soni is known on this host from Jabalpur, Madhya Pradesh ( Rajak & Soni 1981). Since the Sarcinella state is not known in the present collection, it is not worth to state that both the taxa are the same. Hence, the present collection has been placed under a new species of its teleomorph.

This species was associated with Asteridiella depokensis .

Etyomology: The species is named after its collection locality.

Figures

Image 4. Schiffnerula hoddurensis sp. nov.