Questions tagged [trees]

Common classification for perennial plants with woody, elongated stems.

38 questions with no upvoted or accepted answers
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68 views

Tree identification in the Caribbean

I live in Puerto Rico and I'm trying to identify this tree and if possible how to kill it since it is infested with termites. https://imgur.com/gallery/Xbmq0g8 Tree Closer view of flowers and leaves. ...
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100 views

Why do quaking aspens quake?

I've just finished reading The Hidden Lives of Trees by Peter Wohlleben, which I thoroughly enjoyed. According to the author, the advantage of shaking the leaves is that both sides of the leaf are ...
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What is the name of this South India plant?

Location: South India. Month: June. Branches of the tree: Lower part of the Plant: Plant's leaf: Whole plant:
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210 views

Can someone identify this tree?

It appears to be a kind of fig tree (perhaps similar to the fiddle leaf fig tree but without the fiddle?), although the leaf shape doesn't match. It didn't seem very appealing to eat (!), it was ...
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Do ginko trees grow well in Eastern North America (specifically Ontario,Canada)

I have recently noticed many Ginko (Ginko biloba) saplings planted in my Eastern Ontario city (in Canada), and they are looking a bit sickly, with yellow leaves. They seem to be a popular choice in ...
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Identify this tree from Nepal

This is a picture of a tree in Nepal. Can somebody identify it?
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50 views

Please help ID this plant

Can anyone please identify this plant and confirm if the species is Synsepalum dulcificum (Miracle fruit)? Pics were taken near my house in Bangalore. Because the miracle fruit plant is not native to ...
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201 views

How did fig tree take root in trunk of palm tree?

Please see pictures below. I never saw anything like this. Do the roots of the fig tree penetrate the trunk of the palm tree? Is there a symbiotic relationship between the two?
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Names for the degrees for symptoms from drought (or other damage) done to trees

Looking out my window, I see trees suffering from drought. I once knew the name for the degrees visible, but I have forgotten and can't find it on the net. Attempt at describing "level of dryness" ...
3
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1answer
414 views

Identifying a weird Texas tree

I recently saw this tree in Texas, with many bees on it. I think it attracts bees. However it didn't have any specific smell, so I don't know why there were so many bees (they were bee for sure). I ...
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49 views

Folded stem on apples - does it have a name?

I have some Newton Wonder apple trees. One feature of the apples it bears is that the flesh around the stalk is occasionally elongated out of the calyx. Below is a picture that shows this on the near ...
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40 views

Winter is getting shorter and warmer. Does this mean deciduous trees can photosynthesise for longer and thus absorb more carbon dioxide?

As springtime is starting earlier this year, I wondered if that would mean deciduous trees had more time to photosynthesise and, therefore, they could absorb more CO2 or have longer periods to grow, ...
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20 views

Why do autumn leaves on the eastern sides of trees change and fall before the western leaves?

I've noticed that for the autumn leaves in my area (Great Lakes region of United States), if a tree's leaves are changing or falling asymmetrically, they almost always change first on the East-facing ...
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49 views

Are trees still carrying their leaves more likely to be felled by an autumn storm?

Is there evidence that trees still carrying their leaves are more likely to be felled by an autumn storm than trees already having lost their leaves? At first sight this seems plausible (and might be ...
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108 views

Flora of Ice Age Europe

I'm trying to get a very in-depth idea of the ecosystem of Pleistocene Europe, somewhere around 40,000 years ago, and I can't seem to find what types of foliage (other than the obvious grasses and ...
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49 views

What species of tree is this?

We have this cute little tree in our front yard (Denver CO): Unfortunately we have to get our water main replaced and this tree lies right in the path of destruction. Anybody know what species it is? ...
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325 views

What is the difference between stomata in evergreen broadleaf trees and deciduous broadleaf trees?

They must have some difference in their stomatal density /whether they are hypostomatous or amphistomatous/whatever, mustn't they?
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304 views

Do evergreen trees have higher densities of stomata to compensate for retaining leaves?

According to literature (Walls-Thumma), evergreen trees have less stomata on their leaves (than deciduous trees) to limit water evaporation. Does this mean they have less less stomata in total, or do ...
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33 views

Function of the 'double' leaf on a pomelo tree

What is the function of the 'double leaf' (I'm unsure what the technical name is...) on a pomelo tree leaf? Furthermore, what evolutionary 'problem' is this structure solving? See image with arrows ...
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Tree-pest coevolution

Many trees first reproduce decades after germination. Many pests of trees reproduce in under a year. It would seem that the pests have an advantage in the evolutionary arms-race, as they can evolve ...
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39 views

Identification and odd leaf anomaly

We're in the process of welcoming sheep, thus setting up the fences, now inside on of the areas, there is a small tree. Never seen leafs like this before. I suspect this to be some sort of anomaly/...
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33 views

Spatial sequence of autumn leave colouring: top to bottom

Leave colours on trees seem to vary on the same tree from top to bottom. Leaves higher up are already further ahead in the shedding process. What's the reason for this tempero-spatial gradient?
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35 views

How many plants or trees should one plant to take carbon dioxide from atmosphere?

I'm interested on computing things. I know that some biologists have done mathematical modelling. Has anyone took any calculations on the following? How many trees or plants should one plant such ...
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38 views

Are there any evolutionary reasons for the different tree shapes? If so, What are they?

So we know there are a thousand types of trees with different shapes. We have Columnar shaped trees: Pyramidal or Conical shaped trees: Weeping shaped trees: And we also have Round, Vased, Open-...
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22 views

Near-zero water loss in a closed hydroponics system?

I know there are a lot of factors that would impact this... Plant type. Plant neediness (i.e., even sibling plants will possess different needs, defects, etc). Automation efficiency. Water & ...
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55 views

Fruiting of trees — environmental stimuli and biochemical cascades

My question concerns fruiting of trees in general. However, I live in a tropical country (Philippines) where mango trees are ubiquitous, so I'll use it in stating my question. The question is about >...
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How long does it take to extract a tree core for dendrochronological analysis

I'm going to do research in the tropics and am considering using tree cores for part of my analysis. However, for my planning: How long does it take on average to extract a tree core of a tree with ...
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763 views

What is the name of this green berry tree?

Location: South India Month: May Location: Outside, Metropolitan. Tree with berry fruits (poisonous or not, I don't know): Its leaves:
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What is this plant & it looks like USA tree “ Carya ovata”?

I saw this tree in India. It was so fascinating because its leaf looks like Carya ovata, which only grows in the USA & Canada according to Wikipedia: Carya ovata, the shagbark hickory, is a ...
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60 views

Which is better adapted for global warming: deciduous or evergreen trees?

Evergreen photosynthesise for longer and don't lose their leaves all at once, whereas deciduous plants do and enter periods of hibernation during winter, among other differences (correct me if I am ...
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52 views

Calculating the canopy size (crown) of a newly planted tree at a future date

Assuming that one knows the maximum area of the canopy and the age of the tree when it achieves this. And given an initial canopy size from the nursery. How would I calculate the canopy size at a ...
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1answer
37 views

What causes the yellow and brown spots on our sour cherry tree?

So at the end of spring (maybe at the beginning of summer) our sour cherry tree started producing these yellowish/brownish spots on its leaves. Can you help me identify the couse of this? What can we ...
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32 views

Tree with red samaras

This tree has red samaras. Location: Toronto Size: medium-sized tree Date: July 26th, 2020 What is it?
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What are the differences between how latewood and earlywood forms and how does this effect it's properties?

In trees the earlywood forms a somewhat abrupt transitions to the darker latewoods that happen during the summer months. What are the chemical differences that arise in this wood at the cellular and ...
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21 views

What is the total mass of leaves on an 'average' mid-latitude deciduous tree?

I know that this is a broad question as there are a very large number of different species of tree with all manner of profiles, height, leaf sizes, etc. My ultimate goal is to estimate the total mass ...
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60 views

Why oldest trees are all around 4k years old?

In christianity stackexchange I saw someone discussing young earth creationism. One of the evidence they show is that the oldest tree, if measured by ring counts, are around 4k years. Which, ...
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53 views

Few deciduous trees in old forest

There is an old forest near me that has lain untouched for at least 150 years and possibly longer. The forest is on a big hill which is surrounded by a marsh. The great majority of trees in the ...
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64 views

Does anybody know what kind of tree is this?

I saw this tree yesterday and I liked it. It is around 1.5 m. I did some search on internet and thought it might be Holly, but I'm not an expert on trees. So I wanted to ask you, does anyone know what ...