Questions tagged [flowers]

Reproductive structures of angiosperm (flowering) plants.

22 questions with no upvoted or accepted answers
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Is the number of stamens always 9 for geranium?

We are studing in class the reproduction of plants. We start the lesson by observing some components of flowers, it was the Géranium. First of all we start counting the number of sepals , petals and ...
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1answer
45 views

Different flowers have same colour

I notice that certain (wild) flowers have the same colour, although they are not closely related. For example, the yellow of the dandelion (Taraxacum) and the buttercup (Ranunculus) are, at least to ...
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44 views

Has anyone confirmed Darwin's theory that nectar began as something “injurious” to sap?

In "Origin of Species", Darwin says (I have added bold for emphasis): Certain plants excrete sweet juice, apparently for the sake of eliminating something injurious from the sap: this is effected,...
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Ideal examples of Magnoliophyta Lilianae

What are the ideal examples of Magnoliophyta (Lilianae-to be precise) for a teacher to show students? And, does anybody know exact name of this flower? Picture
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Does hybridizing a specific flower affect the offspring?

If among several flowers within a plant, there is a specific flower that is slightly larger or brighter or has an extra petal, will this trait be possibly passed on to the offspring? In other words, ...
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33 views

Can anybody identify this flower for me?

One single flower on small 2 year old tree with alternate leaf arrangement
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29 views

What is a 1-flowered raceme?

PlantNET describes the inflorescences of Daviesia acicularis as: Racemes reduced to 1 flower How is a 1-flowered raceme different from a single flower?
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35 views

What was the first known flower meant for a flying pollinator insect?

I think flower ancestors were colorless and sugarless. The first flower then chanced upon using insects by attracting them. Has this flower been discovered and from what ancestors did it evolve from?
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77 views

Why does abnormal mitosis takes place in the cells of tapetum?

I know that the tapetal cells present in the anther are binucleate. I also know this means that after karyokinesis the cell does not divide itself and instead form a syncytium. This occurs due to ...
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56 views

Which species of Agave are known to have inedible flowers?

It is well documented that many species of Agave have edible flowers, however I keep coming across statements to the effect that "most species" of Agave have edible flowers. This implies that it is ...
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76 views

What makes the flowers glow?

I had learnt in a plant biology course that, all the flowers are actually originating from leaves, with several mutations. I wonder what makes a flower sparkly like this. Photos belong to a ...
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27 views

What is this strange flower which I found on an upheaval in Rhodes (Greece) in July?

It looks like it carries berries instead of blossoms. Is it actually a flower or rather a baby tree? I found it in a Google image search (see here: https://goo.gl/images/vfBDSP), but there was no ...
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36 views

Flower Identification: Pyrenees, France

I'm trying to identify the white flowers in this photo. Location is in the Pyrenees mountains near Luz-Saint-Saveur in France. The image was shot in early September of this year. Any help is greatly ...
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21 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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23 views

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 ...
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27 views

Can someone identify this Brazilian flower?

The photo was taken in january 2004, at Parque Estadual do Rio Preto (Black River State Park), in the Cerrado (savanna-like) of northeastern-central Minas Gerais, Brazil. The plant was herbaceous/...
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Why Japanese cherry trees blossom so early in spring?

My understanding is that flowers' main benefit are the insects which attracted to the shape/taste of these and facilitate cross pollination. Yet the Japanese cherry trees start (and end) to blossom (...
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15 views

Of Autogamy, Geitonogamy and Xenogamy

Ok, so I know whats the difference between the three terms in botany. Autogamy is pollination within the same flower, Geitonogamy is pollination from the anther of one flower to the stigma of another ...
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48 views

Help identifying a part of a flower

I researched about floral diagrams and this is what I found:- This is floral diagram of Theobroma cacao. I managed to identify others but this part near the stamens was not found anywhere. Also the ...
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Biochemical Mechanism behind red hibiscus flower on a cream hibiscus plant

I have two 3-4 yrs old cream hibiscus shrubs in my garden. The shrubs seemed normal enough, giving cream colored petals with a red center. But soon I noticed that there are specific branches, which ...
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31 views

Do four-leaf clovers have some disadvantage in reproduction?

As far as I understand, four-leaf clovers are caused by genetics, so when reproducing, they should produce four-leaved children. I haven't found any disadvantages of four-lead clovers (e.g., ...
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74 views

What is wrong with this flower?

Today morning I was surprised to see this flower as it has four normal pale orange coloured petals and one bright red one. This is a flower of Hibiscus and all the flowers of this plant have the ...