Observation 12811: Candelaria

When: 2008-10-17

Collection location: Vista House, Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

Greenish to yellowish crustose lichen found growing on basalt railings and stonework at Vista House.

[admin – Sat Aug 14 02:07:20 +0000 2010]: Changed location name from ‘Vista House, Multnomah County, Oregon’ to ‘Vista House, Multnomah Co., Oregon, USA’


Call it a blatant plug for Oregon scenery, this view is available less than 20 miles from the Portland International Airport, and I-84 is visible … way down below.

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Add Comment
Make sure Candelaria has minute lobes…
By: Jason Hollinger (jason)
2008-10-18 14:42:30 MDT (-0600)

There are several other granular crustose lichens of the same color. Generally I can make out a few intact lobes in your photo, strongly suggesting Candelaria (even that can be an incorrect deduction), but the one in this photo look purely powdery. Other possibilities are: Chrysothrix (purely powdery or “leprose”), Candelariella efflorescens (only bark, so we can rule it out for this specimen), and Caloplaca (reacts K+ red and is typically oranger).