Observation 168013: Melanohalea O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch
When: 2014-06-21
No herbarium specimen

Notes: Lichen a mass of brown or brown-green sorelia (perhaps) that rises 1/2" from the surrounding bark (1.2cm). Thallus in contrast is concolorous widely lobed and perhaps appressed to bark. Thallus reverse is white and gray, no rhizimes noted, with some fruiting structures present on interior lobes.

Proposed Names

-29% (1)
Recognized by sight
29% (1)
Eye3 Eyes3
Recognized by sight: Based on Melanophalea ID’d by Jason Hollinger, based on the lobed portion of the thallus.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
I do both
By: Jason Hollinger (jason)
2014-06-21 14:16:45 CDT (-0500)

For field shots I have a small tripod. That makes a huge difference in low light conditions, of course. But in bright sunny places there’s just nothing you can do. Except have a friend stand in the sun to cast the subject in shadow! But even then it will usually totally mess up the colors, making it way too blue, or god forbid, if you happen to be wearing orange or some other bright color, the reflection of the sun off your jacket will make things even worse. The best field photos are definitely taken on a nice bright overcast day. Wet is also bad, that really messes up lichen colors. Dry with diffuse colorless light is ideal. Another option is to get an external flash and take photos in low light. (That’s how the Sharnoffs got all those spectacular photos in Lichens of North America.) That gives you a nice dark or even black background, and good consistent bright colors.

But the most important thing you can do is just to set your camera to take higher quality images (both higher jpeg quality and greater resolution). I realize bandwidth can be a problem, but it’d be worth it. I personally think it’d be better to post half as many photos that are twice as good quality. We’re past the limit of what I can help you with by squinting at thumbnail photos!

As for focus: Does your camera beep or flash lights or anything if you are too close to the subject? Mine beeps when it gets a good lock. That way I can half-press the shutter release over and over, getting closer and closer to the subject, until it stops beeping, then back off a hair and take the photo. This guarantees — assuming it’s focusing on the correct thing! — the closest-up photo with the maximum amount of detail my camera can manage.

Also causing eye sore!
By: Daniel B. Wheeler (Tuberale)
2014-06-21 13:59:04 CDT (-0500)

It’s nearly impossible to focus on the brown lichens I find with my equipment, hold the camera still enough, and have some semblance of scale.

Do you take photos in situ, or in lab, Jason?

I’m sorry Daniel
By: Jason Hollinger (jason)
2014-06-21 13:43:36 CDT (-0500)

But this is becoming an exercize in frustration without better resolution photos! This could be a Collema, which would be very interesting in an urban setting, but it could also be a Melanohalea, completely unrelated and uninteresting.

Created: 2014-06-21 13:23:38 CDT (-0500)
Last modified: 2014-06-24 11:27:13 CDT (-0500)
Viewed: 26 times, last viewed: 2016-10-24 05:07:57 CDT (-0500)
Show Log