Observation 143627: Cronartiaceae Dietel
When: 2013-08-22
( 2400m)
No herbarium specimen

Notes: Makes a gall on pine that drops a lot of bright yellow / orange spores.

Spores 22 – 33 × 12 – 17 micrometers. Mean 28 × 15.

Spores ornamented and thick walled, with bright yellow contents.

Images

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360622
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361703
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361707
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Proposed Names

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
This is a three needle pine
By: Alan Rockefeller (Alan Rockefeller)
2013-08-27 20:26:43 BST (+0100)

There are quite a few three needle pines at moderate altitudes in Mexico.

damon (Edited)
By: Byrain
2013-08-27 19:41:12 BST (+0100)

How did you rule out Endocronartium harknessii?

Alan, what kind of pine? How many needles?

Edit: From this PDF here is one possible method…

“Isoenzyme and protein analysis of aeciospores can differentiate between Endocronartium harknessii and C. quercuum, and between the formae speciales of C. quercuum (Powers et al., 1989).”

Westcott’s Plant Disease book also mentions some other rusts on pine, but I’m not sure they share the same morphology. I still think specific host information could help.

alan,
By: damon brunette (damonbrunette)
2013-08-27 19:29:17 BST (+0100)

thanks for helping me learn a new name!

Created: 2013-08-23 22:42:52 BST (+0100)
Last modified: 2016-06-10 20:30:09 BST (+0100)
Viewed: 144 times, last viewed: 2016-11-23 12:57:55 GMT (+0000)
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