Id needed ...

[SheffieldLass]

These look very familiar .... but they aren't Xylaria hypoxylon as these have basidia ...

Found on very wet branches in a log jam in a stream, very probably sycamore. (I pulled the branch in the first one onto the bank as I didn't have wellies. Second one taken in situ.)



Basidia are single spored.

Spores hyaline, pip shaped, 6.9-8.6 x 4.2-4.9um, qav=1.7

I'm sure I ought to know what these are.

Melanie

[Chris Yeates]

Originally Posted by SheffieldLass

These look very familiar .... but they aren't Xylaria hypoxylon as these have basidia ...

hi

I really don't see basidia here - could those not be conidiohgenous cells and conidia of an imperfect state?

best

Chris

[SheffieldLass]

Originally Posted by Chris Yeates

hi

I really don't see basidia here - could those not be conidiohgenous cells and conidia of an imperfect state?

best

Chris

You are probably right, though the spores/conidia don't match those shown on Bioimages for Xylaria hypoxylon (the only place that I've found that shows the microscopic details of the asexual stage) ... his are the typical cylindrical ones, 10 x3 um, these were pip shaped, averaging 7.8 x 4.6um. It was also because they seem to grow on a stalk off the top of the 'basidia' in the manner that sexual spores do that got me confused.

Melanie