Questions tagged [botany]

The study of plants and plant life.

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1answer
36 views

What species of mulberry is this?

I have several mulberry seedlings that have popped up in my garden. What species (or hybrid-species) are they? Details: The location is Toronto, Ontario The date is July 18th, 2019 I have several ...
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1answer
23 views

Will plants accumulate toxins from soil contaminated by toxic substances like paint thinner/lead paint?

After my grandfather died, demolition crews dumped garbage from the house onto his huge vegetable garden, including lead-painted windows, aluminum, asbestos tiles and more. Much of it got burned in a ...
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13 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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9 views

Do plant root exudates help plants metabolize the minerals in native rocks the roots encounter?

Plants require a wide variety of minerals just as we do. They must get those minerals from the soil their roots are growing in. However, most minerals are not in what I would call 'bio-available'. (...
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1answer
42 views

Where does the carbon in new spring leaves of a deciduous tree come from?

When a leafless deciduous tree 'comes to life' in the spring and puts forth new leaves, where does the mass for these leaves come from? The tree has no leaves to make use of photosynthesis to get the ...
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1answer
39 views

Is there any biosafety level scale for plant pathogens?

Biosafety levels commonly defined on basis of human/animal pathogens, but what would be the biosafety levels for plant pathogens?
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30 views

What is this spiky fruit/cone?

I am trying to identify an unusual cone or fruit found today on Tayside in Scotland. Here is an image. Can you help?
3
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1answer
42 views

What is the identity of this flower found in Mavericks Beach in Half Moon Bay, California, USA?

Please help identify this flower I saw in Mavericks Beach in Half Moon Bay, California. It was smelling soooo good, you can feel from distance. I want to buy and plant in my garden. Thank you,
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25 views

Why doesn't the soil get depleted after repeated clearing of vegetation?

In my neighborhood, there is a hillside owned and maintained by the local municipality. The hillside is generally overgrown with vegetation. Work crews clear out the vegetation multiple times ...
3
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1answer
110 views

Unknown Lamiaceae plant identification

A while ago I received a pack of seeds described as Pycnanthemum Pilosum / Mountain mint. The seeds are small (below 1 millimeter) and brown: Plants grown out of these seeds are around 40 centimeters ...
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12 views

What is the difference between Flora, Manual, monograph, catalogue, periodicals [duplicate]

Pls suggest differences with reference to taxonomy and systematics
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16 views

Does Haworthiopsis attenuata plants gives oxygen when kept indore

Does this plant give fresh oxygen when kept indoor
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12 views

What is the accepted theory of root and shoot apical meristem organization?

I learned many theories of root and shoot apical organization. Histogen theory, Haberlandt's division of eumeristem, Tunica corpus theory and cyto histological zonnation theory. But which is the ...
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2answers
80 views

Can someone identify this plant I saw in NYC (might not be native idk)

I've never seen a plant with these type of leaves before and was wondering if anyone recognized/can figure out the species.
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13 views

Chemical inhibition of fertilization in plants

Are there any chemical compounds that inhibit fertilization in plants after gametogenesis? Simply put, I am talking about spermicide or emergency contraception for plants. Specifically, I am ...
4
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2answers
140 views

Why does this plum/apricot hybrid look like brains?

Why does this plum/apricot hybrid look like brains? Notes: Here's a photo of what a normal fruit on the tree looks like. Location is Zone 5, east of Toronto. There are about 20 other fruits on the ...
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1answer
27 views

Can I use a basic compound microscope to analyze the ploidy of plant chromosomes?

So, I'm not really any kind of trained botanist. But I do have two things: some dandelion seeds from France, and, collecting dust in my garage along with related accessories, this thing. Normally, ...
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1answer
25 views

Long brown needly things fallen from tree?

I was walking next to a row of trees (I think coniferous) and found many of these things on the ground: A parallel bundle of 2-4 medium-brown needly things, about 15 cm long and 1 mm in diameter, not ...
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28 views

Could somebody please tell what tree genus is this?

Leaves of a tree in south Asia: It is in Pakistan, found in flat land habitats.
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1answer
30 views

Limitations of the Self-Incompatibility Mechanism in Plants

For a given plant species, how many types of S-loci exists to prevent self-pollination? I would like to know how often a plant stops fertilization process by other plants, thinking the pollens belong ...
14
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1answer
2k views

If plants “alternate generations” between sporophytes and gametophytes, why don't we say the same of humans?

I've been reading on Wikipedia about how plants alternate generations between a diploid sporophyte (usually the dominant part) and haploid gametophyte (in flowering plants, the pollen and ovule sacs). ...
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2answers
129 views

What is it called when a dead flower is rotted away and only the veins remain?

I've spotted a flower that is dead: It looks like most of the tissue has rotted away and only the veins remain. (Sorry, I don't know the proper name for flower veins). What is the technical term ...
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22 views

Which flower is this?

Found it in a tree in south America.
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1answer
33 views

Can anyone identify this small shrub? Has white flowers

Small shrub in adelaide south australia garden.
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10 views

Why do hydrophytes lack endothecium

So I read that endothecium is a layer in the anther wall and it usually contains layers of alpha cellulosic fibrous bands that help in the dehiscence of anther Further hydrophytes lack this layer So ...
2
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1answer
69 views

Type of Tree With Somewhat Squarish Fruit

I live in the SF Bay Area and am trying to identify a tree on my street. It's the fruit that is confusing me -- does anyone know what this fruit is? It's not a rare tree -- there are at least several ...
2
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1answer
65 views

What’s the name of this tree?

I’m trying to find information about this tree that I didn’t plant. Looking for information in terms of pruning, etc. It had white flowers on it this spring, but is now flower less and has very few ...
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0answers
8 views

Where to find data on different crops

Hello I'm not sure if this is the proper place for this question. If not, I am happy to move it. I'm trying to find a source of data on different crops, is there some governmental database that ...
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2answers
123 views

What is this fruit

What is this fruit? Is it edible? Found it in my backyard, in the Lehigh valley, eastern PA. Here's the photo:
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2answers
37 views

What can be the reason for yellow and dark marks on leaves?

The plant in our office started to have this strange marks, what can be the reason for that kind of marks? how can we cure the lovely plant?
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0answers
11 views

Determinants of color for viola tricolor

Two years ago, I bought a small pot of viola tricolor for a hanging pot in my yard. Last spring and this spring little viola tricolors have sprouted in my yard, the original died two years ago. I ...
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1answer
13 views

Where to download confier (pine) or A. thaliana annotated reference RNA transcriptomes in full .gbk (GeneBank) format?

Where to download confier (pine) or A. thaliana annotated reference RNA transcriptomes in full .gbk (GeneBank) format?
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18 views

Is there a LD50 for CO₂ for plants? [duplicate]

I frequently hear the argument when talking about climate change that high levels of CO₂ in the atmosphere is an advantage, not a problem, because it makes plants thrive. However, can't too much CO₂ ...
3
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1answer
71 views

Liquid that comes out raw mangoes

What is the composition of the liquid that comes out of a raw mango when you break it off from its stem? It oozes out some sort of juicy liquid. Any idea what that is? Also, is it edible?
2
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1answer
48 views

What kind of ribes is this?

I have a plant in my USDA zone 5 garden that appears to be in the ribes genus. Details: The location is east of Toronto (Ontario, Canada). The plant is currently flowering (today is May 18th, 2019)....
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0answers
13 views

Does the difference in the height of artificial lighting affects the height of the plants?

I have some plants living on artificial lighting. I've noticed the following in the following two plants of the same species: This one was grown with lamps very close to it (~10cm). This one ...
2
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1answer
77 views

What is this tree growing in my town?

Can anyone tell me what kind of tree this is? I took this picture today. It's in Iowa City, Iowa.
2
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1answer
55 views

Can two populations of the same species pollinate during different times?

My question comes from the Barron's SAT Subject Test Practice Test #1 question 2 It states: Two populations of rhododendron, R. ferrugineum, grow in the same region of Connecticut. Although ...
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1answer
49 views

Does anyone know what this purple plant is? (picture taken in Turkey)

Is anyone familiar with this plant species, picture taken in the Dalaman region of Turkey. It has large purple leaves.
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2answers
59 views

Which plant's part is this?

I found this plant in Rajasthan, India. This sample is 4-5 cm long. This is an ornamental plant. It was a potted plant. I put my fingertip in the photo to give an idea of size of the specimen. I can't ...
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1answer
40 views

What is the scientific name of this plant that is possibly called ogre ears?

I already did a reverse image search and came up with "ogre ears" as a name for this plant. However, this name is associated with other plants: Crassula argentea and Crassula ovata. What is the ...
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1answer
33 views

Growth on raspberry cane: What is it?

I have raspberries growing in my garden. One of the raspberry canes has some sort of growth on it. Size: Approximately 2 inches long Location: Zone 5; east of Toronto, Ontario, Canada Date: April 4, ...
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1answer
27 views

Plant identification and toxicity

What type of plant this is and is it poisonous (and, if so, in what quantities)? The pictures were taken at Gullane Bay, Scotland. The plant is widely present in that region.
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50 views

How many nutrients do trees process daily?

Is this tree fact below that I have found on social media sites true? I don't know the source of the quote. It's pretty amazing. I'll be glad if someone can provide the source too! Natural Wonders ...
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1answer
34 views

Do violet potatoes contain more or less solanine than normal potatoes?

What is the solanine content of the violet potatoes? Is it more or less than in the normal potatoes?
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1answer
64 views

Can anybody identify this kind of plant?

Location: Low Tatras, Slovakia, elevation: 1800 m. Can anybody identify this plant from Slovakia mountains?
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1answer
789 views

Identify This Plant (Flower)

I just bought this plant from flower shop, after it flowered it was very beautiful red flower, can anyone tell me what is this flower?
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21 views

The correlation between a leaf's age and its length in the initial stage of growth [closed]

I am building a machine learning algorithm which predicts the age of a leaf before its maturity period based on its measured length or area. I would like to know whether there is a mathematical ...
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0answers
37 views

How can I learn biology by myself? [duplicate]

I am only 15 years old,and my primary school education hasn't been that good,also I forgot a lot of things. I would like to start again,and I am asking for your advice. What are some of the good ...
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1answer
29 views

Is a flower having 12 petals trimerous or tetramerous?

Suppose if a flower has 12 petals. Then 12 is a multiple of both 3 and 4. So which category of flower is it? Is it trimerous or tetramerous?