Questions tagged [trees]

Common classification for perennial plants with woody, elongated stems.

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1answer
997 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
168 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.
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1answer
502 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 ...
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2answers
210 views

Can someone identify this tree from the Pacific Northwest?

A tree at my house in Seattle, Washington, USA has these leaves. Can someone tell me what it is?
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795 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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1answer
3k views

What is the name of this plant with mango type leaves?

Location: South India Leaves: Mango Type Indoor/Outdoor/Wild: Indoor Month: May
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1answer
843 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?
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57 views

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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1answer
165 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 ...
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1answer
374 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 ...
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3answers
269 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 ...
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1answer
420 views

What is the name of this tree with yellow flowers?

Location is South India, Tree is very large, but leaves are very small. Image: http://imgur.com/fgtFzVD
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1answer
102 views

Identification of an unusual tree

Location : Lyon, France I think it's one of the laziest trees I've ever seen XD
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1answer
2k 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, ...
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2answers
3k views

Identify this indoor plant with strange stem-like leaves

It appears that this plant branches multiple times from the base of its stem; however, I'm not sure if the base stems are from one organism. It becomes yellowish in color at the tip each stem-like ...
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1answer
622 views

What is the maximum height of a tree?

I know there exists a huge variation in the height of trees. But what is the maximum height a tree can reach? It must have something to do with the ability of the capillaries to transport life fluids ...
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2answers
246 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 ...
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63 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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2answers
1k 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 ...
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1answer
172 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 ...
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1answer
2k 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 ...
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2answers
1k 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 ...
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1answer
1k 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 ...
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1answer
442 views

Are "constraint trees" in phylogenetic analysis cheating? How can I correctly use them?

How do phylogenetic experts evaluate results which use constraint trees? Are there examples in the literature where phylogenetic experts detail how they use constraint trees? Here is my problem. I ...
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1answer
758 views

How to build a phylogenetic tree without an outgroup? [duplicate]

I have whole genome aligned sequences of four beetle populations of same species. I wish to construct a phylogenetic tree with the four. However, I am unable to find a suitable outgroup of the species,...
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1answer
101 views

What type of tree is this? (Coyote Hills)

I found this in Coyote Hills, Los Angeles, USA. Please provide the common name.
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54 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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1answer
100 views

Where can I find trees preserved for hundreds of years?

I assume there are climate conditions that cause trees to be preserved, since there are fossilized trees, however, it may be extremely rare to find a tree in a nascent state of fossilization. Is it ...
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1answer
12k 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
396 views

What is the identity of this fruit/tree found near Berkeley, California, USA?

Please help identify this fruit/tree found near Berkeley, California. The tree had no leaves. The fruit looked like a pear from far. It has no flesh. When the outer skin is peeled, the seed looks ...
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1answer
144 views

What plant/tree is this?

Found this in a rural area next to the road last month and I wonder what is it? From my searches I think it is a strawberry bush but I'm not sure and any help would be appreciated, thanks!
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2answers
7k 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. ...
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1answer
135 views

Is it possible for any impurities to get through the apple peel?

My parents always told me not to eat from the apple trees near the road, because some kind of bad toxic dirt might get through. This sounds to be physically possible but not really probable in my ...
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1answer
89 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 ...
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1answer
99 views

What is the name of this berry producing tree?

I live in Middle Tennessee (USA) and came across this tree while I was hiking through the woods. I'm curious as to what type of tree this is and if the berries have any uses or are poisonous. The ...
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1answer
337 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 ...
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0answers
214 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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1answer
84 views

Will the climate change help the trees to grow?

I've heard several contradictory views and I'm not sure which factor do climatologists count with. Counting with all the effects of the current climate change (including changes of biotopes on places ...
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2answers
355 views

epiphyte mats in tropical forests

I read in an ecology text book ("Ecology: Concepts and Applications" (7th edition) by Manuel Molles) that trees in tropical forests can be sustained despite the poor soil is because they extract ...
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1answer
45 views

Strategy for tree and shrub identification

I often find it difficult to identify trees and shrubs even though I have many handbooks and manuals on trees and shrubs in my area (New England). The typical problem is that the species is not in the ...
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1answer
2k views

Are a bonsai tree and its normal version the same species? [duplicate]

I would like to know if bonsai type of a tree is a separate species from its normal version. Do they differ by genes, or is it just a matter of different physical care? Can I grow a bonsai tree from ...
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1answer
150 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 ...
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0answers
52 views

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" ...
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1answer
440 views

Previously frozen papaya seeds sprouted. How will it affect the plants?

I thought about asking this on Gardening SE, but it seems to me as a technical subject which requires biological expertise to answer. This is not something that usually occurs for gardeners, so I don'...
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2answers
212 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 ...
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3answers
388 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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1answer
457 views

Best methodology to compare computed phylogeny tree with taxonomy?

I have computed a phylogenetic tree using an alignement of sequences, and I would like to : Compare it to the "known" taxonomy (uniprot/ncbi which I know is not the most up to date one) and extract a ...
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2answers
21k 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 ...
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1answer
1k 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 ...
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1answer
85 views

Why does the open tree of life have 2600 species of rose?

The open tree of life has 2754 species and subspecies with the prefix Rosa. Wiki says: There is significant disagreement over the number of true rose species. Some species are so similar that ...