this post was submitted on 22 Jul 2024
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Science Memes

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[–] [email protected] 58 points 3 months ago (1 children)

"Tree" isn't a biological definition. It's a descriptive term for "a tall plant with at least one rigid central trunk." Which means that anything that looks like a tree is probably a tree, regardless of species.

[–] [email protected] 20 points 3 months ago (3 children)
[–] [email protected] 7 points 3 months ago (1 children)

Ayy, welcome to the tree club!

[–] [email protected] 1 points 3 months ago (1 children)
[–] [email protected] 2 points 3 months ago

TREEEEEESSSS THEY ARE UUUUSSSSSS

[–] [email protected] 6 points 3 months ago

We welcome you to tree-hood, my fellow arbor

[–] [email protected] 3 points 3 months ago (1 children)

Do you get pollinated by birds and bees?

[–] [email protected] 9 points 3 months ago

That's personal

[–] [email protected] 45 points 3 months ago* (last edited 3 months ago)

There's no widely-accepted scientific definition of a tree.

##PeopleCorrectingPeopleIncorrectly

[–] [email protected] 34 points 3 months ago (8 children)
[–] [email protected] 19 points 3 months ago

No such thing as a tree? So you mean all those binary trees I've been inverting have been a lie? My whole world is shattered.

[–] [email protected] 9 points 3 months ago

Of plants native to the Canary Islands, wood independently evolved at least 38 times!

[–] [email protected] 8 points 3 months ago (1 children)

Indeed, it simply is not a phylogenetic categorization but a physio-ecological one. Tree, like shrub, liana, herbaceous, woody/non-woody are all terms solely used to place plants into functional groups based on how they grow. None of these has to do with their taxonomy.

So the question is, what is a tree and is having secondary growth necessary to be one? Because monocots, like palms are, don't have secondary growth, they use some workarounds. But why should that matter in the definition of a tree? I don't know. So yeah, a coconut palm should be considered a tree. But it hasn't got to do with phylogenetics (like explained in the article you linked).

Also, millennia ago there have been vast forests of lycopods!! Just imagine huge trees that are actually spikemosses. So why shouldn't a palm not be a tree?

[–] [email protected] 2 points 3 months ago

my definition of a tree is basically "a plant consisting of a single pillar-like robust trunk".

most plants can be trees, especially ones that generally grow as bushes, if they are prodded into doing so by pruning and whatever other pressures, and there are some plants that seem to flip a coin to decide whether they grow into bushes or trees.

[–] [email protected] 6 points 3 months ago

Except that yes there is. It's just not a scientific term. Same with fish.

[–] [email protected] 4 points 3 months ago* (last edited 3 months ago)

You forgot about the myth of vegetables.

[–] [email protected] 2 points 3 months ago
[–] [email protected] 1 points 3 months ago (2 children)
[–] [email protected] 9 points 3 months ago

A local park ranger I know likes to remark that our state tree is a grass. (I'm in Florida.)

But I'd say that's also inaccurate. IMO, grasses are in the family Poaceae, and palms are in the family Arecaceae. I guess one could remark that our state tree is a commelinid...but I don't think tourists would get as much of a kick out of that.

[–] [email protected] 5 points 3 months ago

Typical trees belong to a group of plants called dicots

Whaaaat? Swiftly ignoring all gymnosperms? The temperate zones are full of trees that aren't dicots, or even angiosperms! Focusing on some biological traits that aren't crucial to the definition of a tree sounds like the author already likes their neat categories and wants to retroactively justify them...

[–] [email protected] 1 points 3 months ago

Neat read, thanks

[–] [email protected] 16 points 3 months ago (1 children)

it looks like a tree and quacks like a tree though.

[–] [email protected] 9 points 3 months ago

Ironically, in this case, that literally means it's a tree

[–] [email protected] 14 points 3 months ago

Trees are the plant version of crabs.

[–] [email protected] 13 points 3 months ago

Okay, and raspberries aren't technically berries at all, but aggregate fruits. In other words, so the fuck what? When you say 'coconut tree', everyone knows what plant you're referring to.

[–] [email protected] 4 points 3 months ago (7 children)

It's probably going to be political since it's wrong.

The coconut tree (Cocos nucifera) is a member of the palm tree family (Arecaceae) and the only living species of the genus Cocos. The term "coconut" (or the archaic "cocoanut") can refer to the whole coconut palm, the seed, or the fruit, which botanically is a drupe, not a nut. They are ubiquitous in coastal tropical regions and are a cultural icon of the tropics.

https://en.wikipedia.org/wiki/Coconut

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[–] [email protected] 3 points 3 months ago (1 children)

From the coco palm family!

[–] [email protected] 2 points 3 months ago

🎵 Ya ya ya ya ya 🎵

[–] [email protected] 2 points 3 months ago* (last edited 3 months ago)

Time to post one of my favorite songs:

https://youtu.be/PKQPey6L42M

("Da Coconut Nut", by Ryan Cayabyab. This version is probably the one performed by his group, Smokey Mountain.)

This song reminds us that the coconut is not a nut; it is the fruit of the cocopalm.

[–] [email protected] 1 points 3 months ago (1 children)
[–] [email protected] 7 points 3 months ago* (last edited 3 months ago) (4 children)
[–] [email protected] 15 points 3 months ago* (last edited 3 months ago)

Conifers aren't trees by this definition. It seems to completely ignore gymnosperms and even misclassified a couple as dicots like sequoias and junipers.

We need to stop looking for a scientifically coherent category for a tree and ,like fish, embrace the true, intuitive, childlike definition of it as just a form, a trunk with leaves at the top.

[–] [email protected] 3 points 3 months ago (2 children)

How many social credit points do I lose if I refer to bamboo products as "wood" outside of botany nerd circles?

[–] [email protected] 3 points 3 months ago (1 children)

If I remember correctly, wood consists mainly of cellulose, lignin, and hemi-cellulose. I don't know about bamboo, but I guess it's some kind of woody material.

[–] [email protected] 4 points 3 months ago (2 children)

It’s the lack of lignin (bamboo uses silica as a strengthener) that sets it apart.

But bamboo is a grass, anyways.

[–] [email protected] 2 points 3 months ago

Never doubted bamboo not being a grass. But I didn't know about the silica thing - that's really cool!! Thank you for telling this!

[–] [email protected] 1 points 3 months ago

It’s the lack of lignin (bamboo uses silica as a strengthener)

Oh I see

[–] [email protected] 1 points 3 months ago (1 children)
[–] [email protected] 2 points 3 months ago
[–] [email protected] 3 points 3 months ago* (last edited 3 months ago) (1 children)

"Trees" have secondary growth while "palms" have primary growth. At least that is what I have been told in dendrology lectures.

https://en.wikipedia.org/wiki/Secondary_growth

[–] [email protected] 2 points 3 months ago

true enough, that doesn't exclude them from being trees though.

[–] [email protected] 1 points 3 months ago

I have literature right here that says otherwise.

Ahem..

"A told B, and B told C, I'll beat you to the top of the coconut tree."

[–] [email protected] 1 points 3 months ago (1 children)

You can tell it's an Aspen from the way it is

[–] [email protected] 1 points 3 months ago

Thats pretty neat!

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