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Questions tagged [botany]

The study of plant life; e.g. angiosperms, gymnosperms, bryophytes, pteridophytes, and algae.

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Pre-linnaean names, where can I ask about current IDs?

I run a large website with lots of historical herb books. For the older ones, finding out current botanical names is very difficult. Can I ask here? If not, does anybody know where I could ask what ...
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Definitions of assimilatory and dissimilatory nitrate reduction

Regarding assimilatory and dissimilatory nitrate reduction, this Wikipedia article states that dissimilatory nitrate reduction involves conversion of $\ce{NO_3^-}$ to $\ce{NH^+_4}$ but this Springer ...
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1answer
30 views

Is this plant lantana camara? If not what is it?

I was in a botanical garden recently and wasn't able to find the tag on this plant. The diameter of the entire flower tended to be around 5cm. Google seems to suggest its lantana camara but I'm not ...
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17 views

Life history data about plants

I am looking for life history data about plant species (i.e maximum lifespan, average lifespan, generation time). But I am searching for a trustworthy source. Any help would be appreciated.
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Berries ID - Can someone help us identify this plant?

Found it in the hilly areas of Meghalaya - a state of India. Not sure if is edible or not, we haven't tried it but it gives a beautiful blue color when used for dying. The seeds are big and there ...
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1answer
22 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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1answer
36 views

Why is “VOLVOX” not considered to be in PROTOZA?

Volovox is an Algae, but it moves with the help of Flagella. Protozoa has members that move by Flagella. Why is Volovox taxonomically in the Algae instead of Protozoa?
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23 views

Can Tajima's D and other population genetic tools be used to copare Arabidopsis ecotypes?

I am currently investigating 2 genes in Arabidopsis taliana that are a product of a recent duplication even (observable from synteny and phylogenetic analysis). In addition to the molecular and ...
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0answers
16 views

Looking for realistic representation of angiosperm sperm cells during pollination

I've scoured Youtube, google, and a handful of my botany textbooks for a cellular-scale photo, animation, or video illustrating an angiosperm sperm cell during pollination/fertilization. ...
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1answer
35 views

Do green algae form obligate symbioses with fungi?

I understand that obligate symbioses means that the two organisms cannot live without each other and are in a symbiotic relationship, but do green algae from this with fungi?
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Is the allopolyploid cotton a fixed heterozygote?

I have been reading some scientific papers (with dubious comprehension of the material) about cotton. They say cotton is a allopolyploid and that it is thought to result from a genome doubling of a ...
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1answer
41 views

ID large-thorned plant growing in Turkey

Can anyone identify this plant which is growing in a friend's garden in the Uzumlu area of Turkey. It has very large spikes/thorns. I'm told it doesn't have flowers or seeds so we are wondering how it ...
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1answer
26 views

What is an accessible book about plant evolution for a non-biologist? [closed]

I have an acquaintance interested in learning about the evolution history of plants. This person has a wide knowledge on botanics, from personal reading and taking care of plants, but E is neither a ...
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1answer
31 views

How to tell petiole apart from stem?

How to tell petiole apart from stem? Is it by the rule that there is usually a pair of stipules at the base of a petiole?
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0answers
51 views

What species is this aromatic plant found in a mountainous region of Greece?

This plant was found in the Taygetos mountains, Greece, and had a lemony smell. Small plant about a foot high. The shiny recurved leaves are reminiscent of rosemary, and the dry seed-heads seem ...
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0answers
10 views

Is there a citrus variety whose main consumed part is flavedo rather than pulp or albedo?

In oranges, lemons, limes, mandarins, pomelo, grapefruits the main consumed part is pulp. In citron it is albedo. Kumkwat is eaten entirely but still the main part is pulp, I think. Is there a ...
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0answers
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How does heat stress kill plants?

It is known that many plants typically die when exposed to temperatures of 40 to 50°C (I believe, these figures relate to exposure times of ~1–2 hours). When a plant is heated, what is the mode of ...
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0answers
22 views

Are small peppers inside others twins?

This happens frequently enough that we've probably all seen it at some point - you buy a pepper, and when you cut it open you find another small pepper inside it. There's plenty of pictures out there ...
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1answer
22 views

plant dormancy in different locations

Say plant x has a dormancy period of y in location z, for instance in Sweden. We bring this plant to another location z', say France. Are there any results with respect to if/how the dormancy period ...
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44 views

Is this some kind of moss?

Found this on the branch of a fruit tree. It is tiny and orange in colour.
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1answer
50 views

Is dandelion a sporophyte or gametophyte?

My text book claims all land plants undergo alternation of generation. However, I don't see how it could be with dandelion. The flower head gets pollinated and then turn back on itself. After a while ...
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0answers
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Is evolution of gametangia in land plants and charophyceae convergent?

Is the presence of gametangia in both land plants and charophyceae a result of convergent evolution or are they of the same origin (and have been lost in other types of algea)?
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1answer
33 views

Are the seeds in a single capsicum fruit genetically identical?

Hopefully not a too-basic question for the venue. I'm a chile pepper growing hobbyist and have spent some time searching around and reading up on pepper (angiosperm) reproduction, but I'm not getting ...
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3answers
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Why does photosynthesis occur even in blue light when the photocentres are activated in red light

From Engelmann's experiment Engelmann used this device to illuminate a strand of Cladophora (not Spirogyra) with light from the visible spectrum, exposing different sections to different ...
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0answers
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Garden plant in south of France

When visiting the south of France (around St Tropez) I had a plant in the garden which I initially mistook for mint but the aroma of the leaves (when rubbed) was distinctly different (I cannot put a ...
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1answer
38 views

Hominidae is to hominid as Poaceae is to what?

I considered asking this on English.SE, but decided against it, since it strictly applies to biological nomenclature, which not many of them will know about - particularly that of plants. So, in ...
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Identify plant from genus *Solanum*

This spring we have recieved from a local Botanical garden in Southern Germany a pack of seeds with the label "surprise". We could grow one plant from the seeds, the seeds looked like "pepper" = ...
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0answers
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What type of wildflower is this?

I live in Utah and I'm wanting to plant some Utah native plants in my backyard. There is this wildflower everywhere in the mountains of Utah and I really want to know the name. It looks like some sort ...
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0answers
42 views

Do flower ovules contain haploid or diploid genetic material?

Are the ovules in flowers haploid or diploid? When I look this up online I get some crazy scientific answer that is impossible to understand and all I need is "Haploid or diploid".
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0answers
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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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0answers
17 views

How does peanut pollination work?

I got curious about peanuts and when I found some photos on the internet, I could see they have flowers. However peanut fruit is underground. How does pollination of peanut flowers affect the fruit ...
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1answer
69 views

Is pith a ground tissue with no specialized function?

Here is a question from the book My Max Score SAT Biology E/M Subject Test (where the SAT is the exam taken by American high school students): Ground tissue with no specialized function A. Xylem ...
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0answers
10 views

Hypanthial disc

Can anyone illustrate what the hypanthial disc is? It is descriped throughout the key to Rosa in the Flora of North America. I think that I understand that the hypanthium is the hip which is formed ...
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0answers
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Why plant tissues end in -enchyma?

Many plant tissue types end in the affix -enchyma. Etymology: enkhyma "infusion," from en- "in" + khein "to pour" Examples are parenchyma, collenchyma, and sclerenchyma (meaning "to pour beside," ...
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What is a section in botany based upon?

I am a bioinformatician working with plant data. Therefore my formation on plant biology and botany is "ok" but not very strong. When people talk about sections, I know that they talk about a ...
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0answers
53 views

Do plants produce more anthocyanins if they are stressed in comparison to if they receive signals suggesting neighbors are stressed?

Plants produce anthocyanins, tannins and phenols in response to a variety of stressors that they experience. Is there any evidence that in response to indications that neighbors are stressed, plants ...
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1answer
70 views

What is this strange-shaped fruit?

The fruit has form of a cube or icosaheder. It is green but quickly becomes black. The meat of ripe fruit is easily separated from the seed, is sweet and tastes as dried plum. The seed has strange ...
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0answers
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Should the infraspecific epithet agree in gender with the genus name?

Let's take the following plant name Gymnocalycium mihanovichii So we were to designate the yellow form of the plant, would it be Gymnocalycium mihanovichii f. aurea because forma is ...
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1answer
89 views

Why is amylose insoluble in water?

In a handout the following is stated: Amylose is insoluble in water, therefore a good storage compound e.g. in stroma of chloroplasts This is with regard to the chemical structure of the molecule. ...
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0answers
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Is flowers nectar secreation influenced by bees/pollinators?

Nectar secretion by flowers is influenced by many environmental factors e.g. water supply and air temperature [1]. My question is: do bees (or any other pollinator) influence it too? I can imagine ...
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0answers
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Polycotyledonous seedlings and how these plants look like when they grow up

Occasionally, seeds I germinate may show three or even four cotyledons instead of the usual two (for the dicotyledonous clade). It is angiosperms I am talking about, and not gymnosperms which may ...
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2answers
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Confused about plant phyla

My kids and I are doing a fun project collecting pictures of life in parks and national parks around us. We are trying to classify what we find down to genus and species. However, I'm confused about ...
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0answers
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Recording of the hissing sound a banana plant makes?

I have heard that a banana plant will make a hissing sound when the fruit pops out by breaking the layers that it grew in (like a husk). Is this true? If it is can someone provide a recording from a ...
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0answers
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What's this growing out of my squash?

This weird bubble filled with liquid was growing out of my butternut squash. Can anyone tell me what it is?
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5answers
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Examples of plant families that contain species that are safe for human consumption and species that are poisonous to humans?

I am trying to make a point to someone that just because two plants share a family and one plant is safe for human consumption, it does not follow that the other plant also is safe for human ...
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0answers
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Can fruit be affected by antifreeze in soil?

Due to an accident about 2L of car antifreeze (ethylene glycol & corrosion inhibitors) was spilled around the soil at the base of a fig tree. I am wondering if there is any way the antifreeze can ...
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1answer
40 views

Regarding plant stress

I have to plan a bioinformatic study on a plant. Microarray data is available for various stress treatments (drought, cold, osmotic and flood stress) on root and shoot tissues. I am a bit confused as ...
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1answer
69 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 ...
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1answer
125 views

What is the function of Xylem parenchyma?

why xylem need parenchyma cells ihave read these cells are connected with xylem by plasmodesma i know that plasmodesma is to connect between cytoplasm of two cells and xylem is dead so what is the ...
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Determine planar phyllotaxis characteristics

Is there any method to fast and precise count the number of spiral and the divergence angle on a planar phyllotaxis pattern? The example of spiral phyllotactic arrangement of emerging flowers on ...