Observation 60030: Ascobolus immersus

When: 2010-11-30

Seen at: Stueben, Maine, USA [Click for map]

Who: Jason Karakehian (Jason Karakehian)

No specimen available

Fruiting body was about 1mm, pale yellow-green, pulvinate with a large gelatinous glob at the apex? I think these were a little immature as there was only one ascus that ejected it’s spores in my water mount and these looked dark and mature. The others looked lighter in color or hyaline. I’ll check on these again in a few days and see if I can get some more mature specimens. (actually, I just read in Van Brummelen that the FB only produces a few mature asci at a time and not all the ascospores are mature at a time, so these FB’s were mature). This one was cool because the asci and ascospores were so huge you could see them nicely at 10x!!! Lovely spore color.
This dung was collected in mid August, dried, and rehydrated on November 13th and I worked this up today on Nov. 30th.

[admin – Tue Feb 08 12:34:50 +0000 2011]: Changed location name from ‘goat dung collected from goat farm in Stueben, Maine’ to ‘Stueben, Maine, USA

Species Lists


fruiting body on goat dung
asci in water crush mount
ascus tip
operculi to the left of the red arrows.
Ascospore with gelatinous sheath. Note the fissures.

Proposed Names

80% (1)
Eye3 Eyes3
Used references: Ann Bell Coprophilous Ascomycetes of Australia 2005
Van Brummelen A World Monograph of the Genera Ascobolus and Saccobolus 1967
Based on microscopic features: SPORES: Wine red-purple in color with fissures, elliptical, smooth, with gelatinous sheath. 62.7 × 36 micrometers.
PARAPHYSES: Filiform, septate.
ASCI: Clavate 8-spored, operculate.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: damon brunette (damonbrunette)
2010-12-01 09:31:01 EST (-0500)

photos are turning out excellent! Are you just shooting through with a digi cam?

Very Cool
By: John Plischke (John Plischke)
2010-12-01 00:03:13 EST (-0500)

Very Cool, now you got me excited. I have collected deer,rabbit, horse and cow dung in the winter months when there was nothing else to do. I have never tried Goat. I will be on the lookout for some. Hopefully it is more common on the goa dung since I have never found that species before.

Created: 2010-11-30 20:38:44 EST (-0500)
Last modified: 2011-09-30 13:08:45 EDT (-0400)
Viewed: 153 times, last viewed: 2017-11-04 13:46:17 EDT (-0400)
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