Questions tagged [trees]

Common classification for perennial plants with woody, elongated stems.

Filter by
Sorted by
Tagged with
15
votes
3answers
261 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 ...
1
vote
1answer
417 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
5
votes
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
12
votes
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, ...
2
votes
2answers
2k 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 ...
-1
votes
1answer
564 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 ...
8
votes
2answers
218 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 ...
0
votes
0answers
59 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, ...
11
votes
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 ...
4
votes
1answer
141 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
votes
1answer
1k 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 ...
15
votes
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 ...
11
votes
1answer
752 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 ...
1
vote
1answer
332 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 ...
1
vote
1answer
676 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,...
2
votes
1answer
98 views

What type of tree is this? (Coyote Hills)

I found this in Coyote Hills, Los Angeles, USA. Please provide the common name.
0
votes
0answers
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 ...
2
votes
1answer
99 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 ...
4
votes
1answer
10k 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-...
1
vote
1answer
360 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 ...
3
votes
1answer
141 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!
4
votes
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. ...
2
votes
1answer
126 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 ...
4
votes
1answer
87 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 ...
2
votes
1answer
96 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 ...
5
votes
1answer
309 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 ...
4
votes
0answers
205 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 ...
3
votes
1answer
75 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 ...
3
votes
2answers
303 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 ...
4
votes
1answer
44 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 ...
1
vote
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 ...
7
votes
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 ...
3
votes
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" ...
1
vote
1answer
398 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'...
4
votes
2answers
202 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 ...
8
votes
3answers
376 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.
5
votes
1answer
416 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 ...
11
votes
2answers
18k 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 ...
5
votes
1answer
939 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 ...
3
votes
1answer
82 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 ...
1
vote
1answer
796 views

What nocturnal animal sound am I hearing in the trees in Maine?

Every year, during late summer nights (usually around 9:00 pm) in Maine, I hear a noise coming from high up in the trees. The trees I hear it from are mostly maple or conifer, but where I live there ...
1
vote
0answers
59 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 ...
2
votes
0answers
324 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?
2
votes
0answers
296 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 ...
7
votes
2answers
104 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?
4
votes
1answer
109 views

Santa Fe xeric indigenous tree

The hills around Santa Fe are covered in a particular xeric tree which is quite small and looks like some kind of juniper which I have been unable to identify: What is this species?
9
votes
1answer
184 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?
8
votes
2answers
584 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 ...
5
votes
1answer
3k views

How does one calculate the amount of oxygen produced by trees?

I'm currently working on a project to measure the impact of tree planting. Calculating the amount of oxygen seems harder than I imagined. Of-course there's the type and size of the tree and the ...
2
votes
4answers
5k views

Doubly-compound leaf examples?

I've got a project where we collect leaves, classify them, etc. There are some required classifications. One of the requirements is to get a doubly-compound leaf. What are some trees that are doubly-...