Koen G > 30-03-2019, 12:10 AM
-JKP- > 30-03-2019, 03:23 AM
(29-03-2019, 09:52 PM)Morten St. George Wrote: You are not allowed to view links. Register or Login to view....
The flower on You are not allowed to view links. Register or Login to view. has a large, round, flat head which looks like it would turn to face the sun for nourishment.
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-JKP- > 30-03-2019, 03:26 AM
(29-03-2019, 09:52 PM)Morten St. George Wrote: You are not allowed to view links. Register or Login to view....
The flower on You are not allowed to view links. Register or Login to view. has a large, round, flat head which looks like it would turn to face the sun for nourishment. I did not originate the idea that it is a sunflower.
The flower on You are not allowed to view links. Register or Login to view. was, many years ago, widely accepted as being a sunflower. In fact, back in the early days of VMS research (pre-radio carbon days), scholars who had dated the VMS to the 15th century or earlier were suddenly forced to change their mind.
Have you found a plant native to Europe that resembles the sunflower? If so, please point me to a picture of it.
Morten St. George > 30-03-2019, 05:07 AM
(30-03-2019, 12:10 AM)Koen G Wrote: You are not allowed to view links. Register or Login to view.Water lily lends support to nothing. In fact, it's one of the few places where the VM does touch known herbal traditions.
The supposed sunflower is most likely a cereal crop like millet. It's beyond me that actual botanists think it can be a sunflower with leaves like those.
Morten St. George > 30-03-2019, 05:10 AM
(30-03-2019, 03:23 AM)-JKP- Wrote: You are not allowed to view links. Register or Login to view.(29-03-2019, 09:52 PM)Morten St. George Wrote: You are not allowed to view links. Register or Login to view....
The flower on You are not allowed to view links. Register or Login to view. has a large, round, flat head which looks like it would turn to face the sun for nourishment.
...
I'm not sure where you got this idea, but the sunflower head does not face the sun, it faces east.
Quote:Sunflowers are fascinating little specimens of nature, and they allow us to see first-hand how plants are not the static beings we think them to be. These special flowers actually face the sun as it rises in the east and follow it across the sky until it sets in the west.
Morten St. George > 30-03-2019, 05:24 AM
(30-03-2019, 03:26 AM)-JKP- Wrote: You are not allowed to view links. Register or Login to view.Look at the third strip of pictures from the top. See that flower head in the bottom-left along with the other pictures of flower heads?
You are not allowed to view links. Register or Login to view.
-JKP- > 30-03-2019, 05:25 AM
Morten St. George > 30-03-2019, 06:49 AM
(30-03-2019, 05:25 AM)-JKP- Wrote: You are not allowed to view links. Register or Login to view.Yes, I know it's called heliotropism. I guess I was oversimplifying, but to oversimplify some more... sunflowers do not "follow" the sun. It's a circadian rhythm. They cycle at night, as well:
From recent experiments:
"...as she and her group detail in a recent Science paper, Harmer found that plants left in the dark would continue to make their rounds for a while, even without the sun to track."
So it's not as simple as saying they are heliotropic. They don't "follow" the sun. They are facing east before the sun comes up.
Also, it's the stem that orients (not the head, the head simply follows). The stem does it before there are any heads.
It might have something to do with pollination (they're not sure yet). Heads facing a certain way get more visits from pollinators than heads facing in other directions.
Don't get me on the subject of plants. I can talk about them indefinitely. Plants are endlessly fascinating and we don't know very much about them. They have discovered some that are genetically more complex than humans.
davidjackson > 30-03-2019, 07:03 AM
Quote:So it's not as simple as saying they are heliotropic. They don't "follow" the sun. They are facing east before the sun comes up.
-JKP- > 30-03-2019, 07:06 AM
(30-03-2019, 07:03 AM)davidjackson Wrote: You are not allowed to view links. Register or Login to view.Quote:So it's not as simple as saying they are heliotropic. They don't "follow" the sun. They are facing east before the sun comes up.
Don't look up the Spanish name jkp, that would really about you.
They are called girasoles - lit. Turners toward the sun.