Observation 103655: Pucciniastrum sparsum (G. Winter) E. Fisch.
When: 2012-05-27
Who: Byrain
No herbarium specimen

Notes: Growing on manzanita (Arctostaphylos) leaves.

Spores with 2 µ thick walls and minutely echinate.
Spore range = 26 – 33 x (16) 17 – 19 (20) µ
Average spore = 29.4 × 17.73 µ
Average Q = 1.67
15 spores measured.

Proposed Names

28% (1)
Recognized by sight
85% (1)
Eye3 Eyes3
Recognized by sight: On Arctostaphylos patula.
Used references: Manual of the Rusts in United States and Canada – Arthur
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Manzanita rust?
By: Byrain
2012-08-02 03:51:16 CDT (-0400)

I’ve searched hard on the internet and can find hardly any info on rusts on Arctostaphylos, especially on manzanita, does anyone have any leads?

Created: 2012-08-02 03:49:34 CDT (-0400)
Last modified: 2013-06-14 16:49:53 CDT (-0400)
Viewed: 58 times, last viewed: 2016-12-21 11:59:33 CST (-0500)
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