Questions tagged [flowering]

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18
votes
2answers
8k views

Why do pink rain lilies flower only after rains, and not from being watered?

We have pink rain lilies (Zephyranthes carinata) in the garden. In my personal experience, I've found that they always flower, without exception, shortly after rains. However, there are roughly ten ...
8
votes
1answer
522 views

Rosette formation: in which order are leafs created

From the picture below, it seems that new leaves are formed something like this (if you imagine the plant as a regular, 12 hour clock): new leaf at 12 o'clock, then at 7 o'clock, then at 2 o'clock, ...
5
votes
2answers
2k views

Where is pollenkitt secreted?

Where is the pollenkitt material secreted? I think the tapetum would be a good candidate, since it provides nutrition to the pollen grains.
2
votes
0answers
47 views

Is (are) there any crucial gene(s) for the formation of flower in flowering plants? [closed]

I am interested in qualitative (flowers of some plants have petal or sepal, but some plants have not) and quantitative (number of flowers of plants) differences between flowers of different plants. ...
1
vote
2answers
158 views

Do you know of ways that help a plant to produce more flowers?

In Crocus sativus, or saffron crocus, the most commercially important part is the stigma of flowers. Each plant produces one flower (so there is more than one plant in this picture) and each flower ...
1
vote
1answer
62 views

Flower/Plant Identification

Could anyone please identify this flower/plant found on the semi-shaded banks of a river in East Ireland? It was located near Japanese Knotweed and looks quite similar to this.
1
vote
1answer
47 views

Name of this flower?

i'd like to know the name of this flower.
1
vote
0answers
13 views

Why do some trees flower year round, others only once

Depending on latitude, rains, and pollinator behavior, etc. some trees flower only once a year such as oak trees, others twice (such as pipe organ cati as a response to pollinating bats) and yet ...
0
votes
2answers
92 views

How do bees help flowering trees survive?

I have often heard a vague claim that bees help flowering tree populations survive. As far as I know, bees take nectar and pollen concentrations from the flowers of flowering trees and use at least ...
0
votes
1answer
107 views

short-day facultative plant, abrupt change to photo period

What happens biologically to a short-day facultative plant that is a few weeks into its short day (flowering) photo period and is suddenly given a 24 hour period of light? Does anything change ...