Portraits of Wildflowers

Perspectives on Nature Photography

Posts Tagged ‘colonies

Nueces coreopsis alone and in combination

with 31 comments

On March 29th in Colorado County I photographed mixed colonies of Nueces coreopsis (Coreopsis nuecensis) and sandyland bluebonnets (Lupinus subcarnosus). I also got on the ground and aimed upward so I could get a different blue overhead and use it to isolate one of the Nueces coreopsis flower heads.

In the last post I noted that it’s common to hear politicians and activists bandy about the phrase “common sense.” I said it’s a loaded and misleading term because some or even many things that a majority of people believe to be common sense are easily shown to be untrue. The first example came from arithmetic, and now here’s one from chemistry.

Suppose that you have an empty one-quart clear glass container with markings on the sides so you can tell how much liquid is in the container. Now pour a measuring cup’s worth of water and then a measuring cup’s worth of alcohol into the container. How much liquid will you have in the container? “Common sense” will tell most people that 1 cup plus 1 cup equals 2 cups, but that’s not correct here. Water molecules and alcohol molecules interpenetrate somewhat, so the volume in the container will fall short of the 2-cup mark on the glass container. You’re welcome to watch a couple of cheerful kids perform the experiment.

© 2021 Steven Schwartzman

Written by Steve Schwartzman

April 9, 2021 at 4:39 AM

Following leads to the southeast

with 47 comments

After I published a post last week entitled “Not a good year for bluebonnets,” three people locally gave me reports on places where wildflowers are currently looking good. In “Bluebonnets redeem themselves” you saw the results of following Agnes Plutino’s lead to the northeast. Craig78681 and Betty Wilkins mentioned places to the southeast, and yesterday I headed that way. The picture above confirms that their leads panned out. I took the photograph on the north side of FM 1327 just west of US 183 in Creedmoor*. By now you recognize the bluebonnets (Lupinus texensis). Mixed in with them are pink evening primroses (Oenothera speciosa), not fully open because of the persistent breeze. The yellow spots are Texas dandelions (Pyrrhopappus pauciflorus). This is how Texas is supposed to do spring wildflowers.

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* Having grown up on Long Island, I always think of Creedmoor as a mental hospital.

© 2018 Steven Schwartzman

Written by Steve Schwartzman

April 11, 2018 at 4:44 AM

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