Questions tagged [trees]
Common classification for perennial plants with woody, elongated stems.
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Why Populus Nigra does not grow in Israel?
What are the obstacles for Populus Nigra? It, especially the pyramidalis (Italian) variety is considered quite Southern plant in Russia.
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Ficus benjamina variegated has all white leaves on a branch [migrated]
One of my ficus developped an almost fully white branch with leaves.
I found about "starlight ficus" which are similar but have more green on their leaves and bark.
Is it common?
What keywords can I ...
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1answer
62 views
Less oxygen in winter?
Since Oxygen is produced by photosynthesis, would there be less oxygen in the air in winter, where the trees shed their leaves and the sun generally shines a lot less? If yes, would that be a ...
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2answers
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Is there any relationship between the height of a tree and the number of branches emerging from the main stem?
Is there any relationship between the height of a tree and the number of branches emerging from the main stem?
I am particular interested in spruce or fir.
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1answer
23 views
How to promote acorn maturation
I have acorns from an oak tree. They look like:
but I would like to speed up their maturation so they split and I can separate the caps:
How can I speed up this maturation process?
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0answers
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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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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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0answers
36 views
Why does a lightsource postpone the time it takes for the leaves falling from a birch?
It is autumn and the leaves have already left their trees on all birch and other trees that has leaves, except one. This birch has a spotlight pointed to the tree and it is on 24/7. I have recognized ...
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1answer
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Identifying a shrub with unusual “many shoots” growth behavior
While recently hiking in the southern mountains of New Hampshire, we came across a plant, and some of them were exhibiting what we interpreted to be a disease, or least unusual growth. On some of the ...
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1answer
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What is this fruit?
There is a hairy hard shell (looking like a small kiwi), which naturally breaks, and under it there is brain-shaped red sweet flesh, half-covering the smooth black seed.
Picture taken in the ...
3
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1answer
106 views
Are turkish hazelnuts edible?
The title of this question is Google suggestion verbatim, when I tried to write it. Yet, I found no answer specifically for Turkish hazelnuts.
Turkish hazelnut is a tree and it's fruit looks ...
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1answer
25 views
Stained chestnut tree leaves
The leaves of the chestnut tree in our back yard have, for a while, developed these stains on them:
..which don't appear to be a normal feature of this tree's leaves, at least according to the ...
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1answer
239 views
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130 views
If it weren't for animals, insects, or people, would plants that produce seeds (nuts, fruit, etc) cease to exist?
I gather that some would or could in theory still be successful, but don't most depend on takers to flourish?
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2answers
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Palm Tree Identification
I need help identifying this particular palm tree. Unfortunately, I don’t have many details to give, and I’m by no means one to say I’m even an amateur at plant identification. We are unsure of its ...
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0answers
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Identification of a young tree in the alpine region of southeastern France
I have a young tree growing in my backyard (in Grenoble, France), and I was not able to identify it, despite searching with many identifier tools.
It's 2 years old now and must be 2 meters high. It ...
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1answer
64 views
Would salt cause a pistachio nut not to be able to germinate?
If I buy a bag of pistachio nuts that have been hand picked off the tree when ripe, then salted in a (light) saltwater solution, then vacuum-sealed, and stored in a refrigerator, then will they ...
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Is Black mulberry always deciduous?
I have a black mulberry (Morus sp.) in my garden (or 2 actually). According to the information I could find it is a deciduous tree. The trees in my garden do indeed lose their leaves. However, as most ...
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1answer
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Do squirrels and blue jays play a role in oak tree distribution?
White oak (Quercas alba) acorns have lower tannin levels than red oak (Quercas rubra) acorns, therefore animals tend to eat the white oak acorns before red oak acorns. Animals such as squirrels and ...
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1answer
505 views
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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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1answer
26 views
Why do some trees hold their leaves through fall and winter?
Why do some species of oak (Quercus spp.) retain their leaves through fall and winter? I've found that these leaves are called marcescent leaves. There must be some benefit that the tree gains from ...
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1answer
292 views
What kind of tree is this — why do its huge leaves change shape and “grow fingers”?
Edit 2: Confirmation that it's one tree!
Surrounding trees on either side along the sidewalk are completely different, and the ones on the other side of the fence are short and have rounded but far ...
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1answer
99 views
More informative phylogenetic trees
In the presentation of phylogenetic trees, the geometric shape of the trees often seems somehow arbitrary and is more driven by aesthetics than by informative reasons.
But wouldn't it make sense to ...
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1answer
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What might a supposed “tree enzyme” be — injected into a Morton Bay Fig tree?
I was recently visiting Fremantle in Western Australia and noticed a large Morton Bay Fig tree in Kings square in the centre. Apparently the health of this tree had been declining, but they hope that ...
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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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0answers
77 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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1answer
77 views
What is this tree in Sydney?
My family snapped this picture around Sydney, Australia. Could someone please advise what this tree is? Help! We are smittened with it :)
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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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1answer
391 views
What is this tree that displays sycamore like characteristics but appears to be too small?
I have been wondering about this tree:
It's bark/leaves make me think it's a sycamore, but it seems too puny. I don't think they'd plant a sycamore there... What is it?
The tree is in a park/...
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0answers
173 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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2answers
132 views
Species I.D. hardwood tree
There are two of these trees, growing in old fence rows, along my yard, in central VA, Augusta County, Shenandoah Valley. They have smooth, leathery leaves, pale wood, quite hard to cut, and tough to ...
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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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1answer
319 views
what is the poison in chinaberry?
I was trying to look up what the poison in Chinaberry is, however, with the exception of a couple related compounds was able to find no information on the poison. What chemical makes up the Chinaberry ...
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1answer
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Did the eclipse make the leaves fall?
I live in Pittsburgh PA, the eclipse on Monday August 21 was only about 80% coverage here. It was notably darker, but less dark then an overcast day. The night of August 21, had a low temp of about ...
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1answer
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Oregon - Tree Identification
Western cascade forest, definitely was planted. In a clearing in the forest along with some western red cedars. I couldn't find anything that would match it when looking for native Oregon trees.
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1answer
100 views
Can you help identify this tree from my garden?
The picture is that of an evergreen tree. I have seen very similar trees in Northern Italy. I would appreciate any help. Thanks in advance.
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3answers
400 views
Strange white strings on cherry tree leaves
What could be the cause of these white strings on the leaves of our sour cherry tree? Is it some kind of fungus or an insect?
Also, i don't know if it's related or not, but on the other side of the ...
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0answers
108 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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1answer
365 views
What is the name of this tree with compound leaves?
Can anyone tell me what is the name of this tree?
It was found in Northern US.
(click on image to enlarge it)
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2answers
65 views
Is this an eastern hemlock (Tsuga canadensis) seedling?
I recently planted a few seeds gathered from a Tsuga canadensis cone in soil gathered from a garden full of weeds. I can't tell if what I have growing is a hemlock seedling or just another weed. See ...
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1answer
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Tree identification - Oregon
A bit west of Portland. It doesn't look native to me, and we didn't plant it. This is the first year it flowered, so I decided to see if I can get it identified. If it matters, the flowers are ...
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1answer
62 views
Are there any trees that prefer to grow on the floor of water bodies but protrude to the air?
Are there any trees that prefer to grow on the floor of water bodies but protrude to the air? Specifically, those that prefer salt water or grow on shallow sea.
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356 views
What is the name of this whorled-leaf tree in India?
Location: South India
Month: June
Season: Rainy
Branch Distribution:
Leaf of the tree:
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0answers
105 views
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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1answer
343 views
How can tree branches grow upwards against gravity?
I saw this tree in front of my room with those branches, and I asked myself why they didn’t grow downward in the direction of gravity since that would be easy for them? And I came to the conclusion ...
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1answer
357 views
Which nucleotide as start point for maximum parsimony?
Background
Maximum parsimony is used to build an evolutionary tree by choosing the "simplest" one. I see a lot of examples about how this should be done. For example:
Question
However it's not clear ...
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1answer
114 views
What kind of tree is this (Seattle, WA)?
This tree is a volunteer and I am hoping to find out what kind of tree it is.
Young tree
Leaf sample
Below is a more recent photo showing flowering.
