Portraits of Wildflowers

Perspectives on Nature Photography

Posts Tagged ‘geometry

Bug nymph on four-nerve daisy

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In contrast to the willful four-nerve daisy flower head (Tetraneuris linearifolia) you saw last time, the flatness of this one that I found on the same April 1st outing had me aiming straight down at it.

You’ll remember that each “petal” of a daisy is actually an independent flower known as a ray flower. The rays (14 in this case) ray-diate out from the flower head’s center, which is made up of many smaller individual flowers of a different type, known as disk flowers. It’s common in daisies for the disk flowers to form overlapping spirals, some of which go out from the center in a clockwise sense, and others in a counter-clockwise sense. If you count the number of disk-flower spirals in each direction, you typically get consecutive Fibonacci numbers. There’s a confirmation of that in the following enlargements of this four-nerve daisy’s disk. Go ahead, count the number of spirals going each way and you’ll see:

In the unlikely event that anyone ever asks you if daisies know how to count, you can confidently and Fibonaccily say yes.

© 2018 Steven Schwartzman

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Written by Steve Schwartzman

April 13, 2018 at 4:35 AM

A different metamorphosis

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This morning I received a message from Judy Baumann saying she’d finished a quilt based on a monarch butterfly photograph that appeared here last fall and that you see repeated above. My reaction to Judy’s quilt was: Geometry meets lepidoptery. To see that happy geometric metamorphosis, click here and then on the picture of the quilt to enlarge it. Nice going, Judy.

© 2018 Steven Schwartzman

Written by Steve Schwartzman

April 8, 2018 at 10:15 AM

New Zealand: Hooker’s mountain daisy

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At the Orokonui Ecosanctuary northeast of Dunedin on February 27th we saw some Hooker’s mountain daisies (Celmisia hookeri), a species classified as being at risk. Notice the white-margined leaves.

As with many other plants in the sunflower family, this one’s flower heads give way to puffball-type seed heads.

After the seeds fall away, the remains are rather sculptural:

© 2017 Steven Schwartzman

Written by Steve Schwartzman

May 15, 2017 at 4:28 AM

Spider and polygons in the morning

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Spider and Nonagons of Light 8737

Another thing I saw on the grounds of the Crystal Bridges Museum in Bentonville, Arkansas, on June 20 was this tiny spider, the main part of which my 100mm macro lens resolved quite nicely. The morning sun in front of me lit up some strands of silk in the web while also causing the lens to create polygonal artifacts of light. Those nonagons have better definition than the red ones I showed you in 2013.

© 2016 Steven Schwartzman

Written by Steve Schwartzman

August 26, 2016 at 4:30 AM

Milkweed flower globe

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Antelope Horns Flower Globe 0643

The last thing I’ll show in this series from my visit to the Doeskin Ranch in Burnet County on April 8 is a flower globe of antelope-horns milkweed, Asclepias asperula, the most common milkweed species in central Texas.

© 2016 Steven Schwartzman

Written by Steve Schwartzman

May 2, 2016 at 5:14 AM

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