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Questions tagged [trees]

Common classification for perennial plants with woody, elongated stems.

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3answers
226 views

Spruce growing high up in a maple trunk: Can a partially rotted trunk completely sustain another tree?

I've come across a spruce tree that is growing 15ft up in the crotch of a sugar maple tree: According to Google StreetView, the spruce has been there since before 2007 (over 10 years ago!). I've ...
15
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2answers
712 views

Australian Tree Identification - maybe pine?

Can you help identify this species? (Link to imgur album with all images) It was growing next to the Yarra River (maybe 10 meters from the bank) in Melbourne. At first I thought it was a type of ...
13
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2answers
534 views

What is Growing on These Tree Leaves? (Image)

I found a seemingly diseased tree when I was out playing tennis yesterday... What is growing on this tree leaf? Is this a disease? If so, is it contagious? I have zero knowledge in botany, but I'm ...
12
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2answers
14k views

Are these birch or aspen trees?

I was just wondering if anybody could help me identify the trees in this image? I am confused as to whether they are aspen or birch, a mix of the two, or whether the brown/reddish trees are some other ...
12
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1answer
1k views

Help ID this South Indian fruit-bearing tree

So there's this fruit-bearing tree near my house in Kerala, South India. A senior neighbor of mine tells me that this fruit is edible. I tried it out, and it tastes alright. I want to ID this plant, ...
12
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1answer
469 views

Why do birches have a white bark?

Several species of the tree genres Betula have a white bark,especially when they are young. This is quite peculiar to trees - at least in central Europe; so I'm wondering if there is a ecological ...
12
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1answer
257 views

What is this small tree?

I found a dozen of these small trees in a local park that is just an overgrown homestead. The leaves look something like an elder but the flower clusters surrounded by white, four petaled false ...
12
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1answer
382 views

What tree is this?

Can you please help me to identify this mystery tree. I have been trying to identify it for four years (Leafsnap app didn't help). Here are a few things about the tree. All the leaf veins are ...
10
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1answer
315 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 ...
9
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1answer
131 views

At what temporal scales do forest structures change?

At which time scales do forest stand characteristics (i.e. stand density, species composition, & diameter distributions) change in a temperate European forest which is not managed? Ideally, I'd ...
8
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2answers
103 views

What is this species of tree?

In my city, there is a unique tree, with thorns all over it. I would like to know - what species is this?
8
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3answers
271 views

What type of tree is this?

This is a tree that I have been growing. I'm wondering if this is a mulberry, and if so, what kind? Location is Arizona.
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2answers
489 views

Why do some trees in California have dead brown leaves but also new green leaves?

It's Autumn 2015, and I just saw a tree that had mainly dead brown leaves but also some new small green leaves growing. Why didn't the tree just keep its old leaves? Does it think we are in spring ...
8
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1answer
142 views

Is the chemical composition of urine detrimental or beneficial for a tree?

Seeing as a lot of people around the world urinate against trees it came to mind that I never thought about how the tree responds to this. Is it detrimental for a tree if people urinate against them? ...
8
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1answer
177 views

What type of tree is this?

I photographed this group of trees a couple of years ago at the northern tip of Prudence Island in Narragansett Bay. Any idea what species these are?
7
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1answer
401 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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1answer
72 views

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 ...
7
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2answers
96 views

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 ...
7
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1answer
143 views

Tree ID request

We have a small tree (more like a shrub) in our village in North Eastern Anatolia, and it is known for its local name which is not Turkish. Even worse, I don't know which language it is, but most ...
7
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1answer
737 views

Squirrel nest construction

I've often wondered how squirrels -- specifically, eastern grey squirrels (Sciurus carolinensis) make their nests. Specifically, I've been curious about how they "weave" everything together to make ...
6
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1answer
82 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 ...
6
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1answer
98 views

Identification of an unusual tree

Location : Lyon, France I think it's one of the laziest trees I've ever seen XD
6
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1answer
68 views

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 ...
6
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1answer
152 views

What sort of seed pod is this?

My son found this floating in a stream in Massachusetts, in the northeastern US. It was intact when he found it, but he cracked it open to see what was inside. I did some Google image searching, but ...
6
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1answer
101 views

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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2answers
176 views

Australian Tree Identification Help

I am looking at identifying a tree for a friend who lives outside of Melbourne. Being from Tennessee in the US, we don't have anything very similar to this at all and it doesn't look like any of the ...
6
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1answer
108 views

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 ...
5
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2answers
180 views

What kind of tree is this?

I live in Denmark, Europe and was going for a walk on a beautiful cemetary in the city. I saw this tree and would like to know what species it is. Unfortunately i have no photos of the tree from a ...
5
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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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1answer
74 views

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 ...
5
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1answer
1k views

How to correctly and accurately identify a few species of trees from their leaves?

I want to identify a tree from one of the 12 species listed based on observing their branch and leaves. Is there quick and neat way to do it? Red Oak, White Oak, Red Maple, Striped Maple, Tulip ...
5
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2answers
163 views

Can anyone ID this flower plant by the photo?

Can someone identify this plant? It has big red flowers when it flowers! Not sure if it is native, but it is in my grandmothers garden in Vancouver, British Columbia, Canada.
5
votes
1answer
832 views

What kind of (cinnamon?) tree is this?

This tree was found in the rainforest on subtropical Japanese islands. At first I thought that it was a camphor tree, which are indeed common in Japan. However, the leaves are slightly different and ...
5
votes
1answer
245 views

What is this (seed/berry)-like object and where is it coming from?

I've been finding these little green (seed/berry) like objects in my garden for three years now. This picture shows either a large variant or simply a later lifecycle stage of development. At ...
5
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1answer
176 views

Why are the genomes of some trees so large?

For example, the current largest known genome belongs to a tree: http://motherboard.vice.com/read/the-largest-genome-ever-sequenced-belongs-to-a-tree I have heard that this could potentially be ...
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1answer
105 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.
5
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1answer
618 views

Does the bending of a tree's trunk in the wind stimulate and strengthen root growth?

Recently Southern California experienced extreme wind velocities and afterwards the news reported over 300 trees had fallen in San Diego County. I had either heard or read somewhere that the action of ...
5
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1answer
473 views

What is the name of this big tree with look of banyan branches?

Location is India, Tree is so huge & some branches are hanging like Banyan. Its Hanging Branches look: & Finally its leaf: So what is it then?
5
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1answer
927 views

Mesophytic Climax community in succession?

My textbook says that in all cases of ecological succession (xerarch, hydrarch, etc.), the ultimate climax community, assuming constancy of environment, is a mesic community. Xeric or hydric pioneers ...
4
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1answer
61 views

Can someone help me to identify what kind of pear is this?

I went to my local groceries supermarket (in Lima, Peru) and found this cheerful looking pear named locally as "pera canela". But I found it weird as the only variety which I'm aware of is Packham's ...
4
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2answers
245 views

Why do pine stands exist?

I live in the midwestern United States. I cycle to work, sometimes on heavily wooded roads, and I can't help but notice that in most places within the surrounding deciduous forests Pine and evergreen ...
4
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2answers
4k views

Do trees grow from the bottom or the top, or is that oversimplifying?

I was wondering how trees grow. I wonder if it was similar to hair growth which occurs from the follicle. but clearly branches grow from the trunk so there is definitely a difference with hair growth. ...
4
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1answer
781 views

Fruit-bearing tree identification

Just moved into a new house in Puerto Rico and I found this tree in the back garden. Can anyone tell me what tree this is, and whether its fruit is edible?
4
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1answer
53 views

Tree identification from dried branch

I found a very interesting branch last week, and have been trying to identify it but cannot seem to find the answer. If anyone has any suggestion, I would be grateful. I found it near the forest, ...
4
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2answers
150 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 ...
4
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1answer
102 views

Jamaican/Caribbean insect, plant identification keys/field guides

Where can I find plant and insect identification keys and Field guides for Jamaica specifically, or for the Caribbean as a whole? I've searched Amazon and google for Jamaican and Caribbean ...
4
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2answers
177 views

Can you identify this phyllanthus tree?

I have this tiny tree in my garden in Cancun, Q.Roo Mexico. (More photos available here.) The little tree started to grow in a planter. I did not pay any attention to it until it grew to 10 cm. It ...
4
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1answer
63 views

Fruit identification - What is this green long fruit?

I found this fruit in the South of France, but I have no Idea what it is. It's a green, hard fruit. I tried to cut it to see the inside (on the following pictures). It fell from a big tree, but I don'...
4
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1answer
7k views

What is the difference between a species tree, a gene tree and a phylogenetic tree?

I have found websites and text books disagreeing over this. For example, Phylogenies are also known as “species trees”... http://biologos.org/blogs/dennis-venema-letters-to-the-duchess/evolution-...
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1answer
77 views

Biological data source of trees

I need some biological data for many types of trees, but I can not find good source of this on internet. Where can I find following type of biological data of any tree: Biological Profile Taxonomy ...