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Observation 133078: Puccinia monoica Arthur

When: 2013-05-05

Collection location: Leavitt Meadow, Mono Co., California, USA [Click for map]

Who: Richard Sullivan (enchplant)

No specimen available

Notes:
This Rust fungus was prominent on many plants of Arabis sp. At least 2 species were involved.
The fungus causes the flowers to abort but the stem glows with a strong yellow color which attracts insects, as does the floral scent it produces.

Images

Normal flower and “pseudo-flower” of Arabis?
10 x magnification of dry leaf surface
sporocarp when wet
600x of sporocarp (wet)

Proposed Names

85% (1)
Recognized by sight: Makes stems of Arabis sp. and other cruciferae turn golden
Based on chemical features: floral Scent

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= Observer’s choice
= Current consensus

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