Freshwater Ascomycetes - Species Monograph

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Genus	Species	Author
Luttrellia	guttulata	A. Ferrer & Shearer
Class	Order	Family
Sordariomycetes	Halosphaeriales	Halosphaeriaceae

MycoBank ID: 504785

Synonymy:

Description

Habit:

Ascomata on wood partially immersed to immersed.

Ascomata:

Ascomata on wood 380–425 x 490–670 mm, partially immersed to immersed in the substrate, globose to subglobose, membranous, black, ostiolate.

Peridium:

Peridium 12–20 mm thick, composed of 8–10 cell layers, outer region of dark, elongated cells, inner region of hyaline, elongated to isodiametric cells.

Beak:

Neck 100–170 x 70–80 mm, cylindrical, dark brown.

Hamathecium:

Hamathecium of catenophyses, 10–14 mm wide, septate, hyaline.

Ascus:

Asci 320–350 x 24 mm, unitunicate, cylindrical, thin walled, lacking an apical pore and apical structures, 8-spored, uniseriate to overlapping uniseriate, early deliquescent, asci elongating in water.

Ascospore:

Ascospores 36–48 x 20–25 mm (mean = 39.95 x 20.69 mm, n = 30), broadly ellipsoidal-fusiform to ellipsoidal, hyaline, 3-septate, occasionally 5-septate, not constricted at septa, thick-walled (2.0–2.5 mm), surrounded by a gelatinous sheath about 6–10 mm wide. Ascospores accumulate as a mass at tip of the neck after discharge.

Sheath:

gelatinous; about 6–10 mm wide.

Appendage:

Not observed.

Culture:

Anamorph:

Not observed.

Other info

Type & Location:

PANAMA: COLON, Barro Colorado National Monument, Wheeler Stream, 9°10ÕN, 79°51ÕW, water temperature 26 C, pH 6, on submerged decorticated wood, 18 August 2004, AF, AF181-1. (ILL). HOLOTYPE.

Other Specimens:

Substratum:

Decorticated woody debris.

Habitat:

Lotic.

Distribution:

Panama.

Pertinent Literature:

Ferrer & Shearer 2007.

Comments:

Additional Pictures

Ascospore stained with azure A.

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