Friday, July 29, 2011


Taken from our Octupus cactus at El Presidio.  The areolas are clearly defined on this plant.

Ever wonder what those clusters of spines are called on a cactus?  Well wonder no the title suggests, they are called areoles.  Here is the definition...
 A small, specialized, cushionlike area on a cactus from which hairs, glochids, spines, branches, or flowers may arise. 
All I can say is....ouch!
The glochids story is coming.....a very painful lesson to be learned:(


  1. "Don't steal my water" says the cactus! :-))

  2. That's a great shot! They look like tiny harmless stars from this vantage point.
    David/ Tropical Texana/ Houston

    BTW: I realy appreciated all your Astronomy posts these past weeks. I'm teaching a unit on Space Exploration and will be using your posts as part of our discussions...especially the methane discovery on Mars. Wow!

  3. Hi David!
    I'm so glad that someone will be able to use them. Teaching Spanish has its limitations at times:) All I can say is that it was exciting to be in a room full of space people talking about some exciting stuff. Sometimes I take it for granted, but Arizona has so many wonderful scientists that work for NASA because of our telescopes located on top of our mountains. In the Tucson area alone, I can think of 3 major telescopes within an hours drive. School starts next week Friday for me. Summer went by fast!


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