I create new topic because landscapes topic is going to be one big mess. I advice to create topics like "Azura Coast - enviro", 'Balmora whatever" instead of xxx's doodles. Simply if most people create topic connected with person instead of subject it is very hard to navigate. I don't know if some of moderators can move from landscapes Molag Amur's content here. If they can I would be very grateful. 
I inspirated with Smitehammer's idea about bristlecone pine. I create various shapes proposition to choose.
Textures
1. Lizard skin type
2. Burned tree with some incandescent parts
3. Stripes type (I really don't know how to name it)
4. Ordinary one
"Leaves"
A. Ordinary leaves
B. Lichen type a
C. Lichen type b
D Tumbleweed type
Combining all of these above u get astonishing amount of concepts. I wait for feedback and questions. For a while I will be a bit busy but I will be answering your questions.
I like the coloring of 2. with the pattern of 1. Great work, I am loving the design.
Those look great! I must admit a fondness for the crazy-curly ones, but again they're all awesome!
We seem to have a serial down voter. These are constructive comments, I've counterbalance by upvoting. Basically whoever is down voting is just a douche.
@HappyChappy I don't care about karma ;P
@Smitehammer We have to choose sth. Combining all of these is quite a lot :P
1 and 4 are my favorite shapes. I like both burnt and normal (maybe stripes, I'd need to see texture) and for leaves, normal or absent (for burnt out ones).
This time in a bit more civilized form.
Vegetation -bigger size - http://lukkar.deviantart.com/art/Molag-Amur-vegetation-44515...
1, 2, 3, 4 - fossil bush
a, b, c, d, e, - dry grass
A, B, C, D, - lichen bush
1), 2) - crusty lichens
1# - magma mushroom
Trees types - bigger size http://lukkar.deviantart.com/art/Molag-Amur-trees-445162128?...
1, 2, 3, 4, 5 - shapes types
a, b, c, d, - textures types
A, B, C, D - leaves types
Lava tubes and connections - bigger size http://lukkar.deviantart.com/art/Molag-Amur-lava-tubes-and-c...
1, 2, 3, 4 - entrances type
a, b, c, d - '"skylights" cracks and holes
A, B - inside lava tubes
@ Smitehammer I think several models will be ok to create some variety. I will add stripes (normal leaves) one to area 1 on grazelands border. Burned (absent) to area 2 and normal (absent or lichen b type) to area 3.
Last supplement for Molag Amur
1, 2 - debris
a, b - cracked ground (hot, cold)
A, B - lava river (hot, cold)
1), 2) - lava geyzer
1# - lava tube skylight cold
2# -lava tube skylight hot (with: hot vibrating air, lava eruption, fire, smoke)
Bigger size http://lukkar.deviantart.com/art/Molag-Amur-ground-and-lava-...
1, 2 - portals
a, b - crystals in rock
A, B, C -crystals
1) rock bridge
2) cave connections
Bigger size http://lukkar.deviantart.com/art/Molag-Amur-rocks-and-crysta...
POS : I like plants concept and this design of images.
NEG : I hope that there will be no giant crystals on the surface/outdoors.
@alysander You are second person which doesn't like this idea :P I'm not oppose but it can be added like optional idea like in Morrowind overhauled. Ordinary Crystals like in Morro are not cool here but black ones like in my Molag Amur landscape are pretty cool, I think. But it's up to all.
@lukkar : They will be perfect placed in volcanical caves.
But when i see something like this outdoors - that will be weird/unnatural even in magrealistic world.
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Also i see that primarily artists made crystals violet. IMHO black or white will be much more natural.
@alysander I agree. Maybe it will be too much. And about colors it will be better black or white for caves on Molag Amur area but it can be improved in next updates.