Quote:
Originally Posted by Shikitita
Thank you!
It just felt as if I had asked something wrong and some of the replies made me feel like an idiot. I know roots are roots, but when I said "type" I meant aerial or in the soil as that's how I understand them easier. I guess I should have asked, instead, where my orchid's roots would end up...
Thanks again.
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There really is no need to "feel like an idiot". It is better to view it as a learning process.
The answers you got were true and, as far as I know, nobody belittled you for not knowing.
The term "aerial roots" gets used quite frequently in the hobby, but it's not really used in the "correct" context all the time.
While I do understand that many people in the orchid hobby often refer to the term "aerial roots" as roots that are not in the pot and dangling in mid-air; this is actually not the definition of the term "aerial roots" used in botany.
To explain:
All epiphytic orchids have aerial roots. This is because they grow on trees in the wild and the roots are exposed to the air to some degree or another. This definition is far closer to the definition found in botany textbooks.
Notice that the context of the botanical definition is far broader in scope.
In terms of the cells of the roots and such, the cells of the roots that are attached to the tree trunk or tree branch are the same exact types of cells that make up the roots that are dangling in the middle of the air.
To be more specific...
Basically speaking, both the roots dangling in mid-air and the roots attached to the tree will have:
1. A group of living and non-living cells arranged to form the root's food and water transport system (aka vascular bundle system).
2. A group of cells that make up the root's fleshy parts (aka cortical layer, cortical tissue).
3. A group of cells that make up the root's skin layer, (aka epidermal layer/epidermal tissue).
4. A group of dead skin cells that have a spongy texture, called the velamin.
They both basically perform the same functions, which would be:
A) Water/moisture uptake.
B) Nutrient/mineral uptake.
C) Photosynthesis.
So when you ask "What type of roots is my Phal growing?", you're gonna get the answers you got - which, again, are true!
Reading your initial post, perhaps the better question would've been: "Phal roots growing in mid-air. What do I do?" - or something to this effect. It was what you really wanted to know in the first place, after all.