• ES Picture of the Day 31 2023

    From Black Panther@21:1/186 to All on Tue Jan 31 11:01:06 2023
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.

    Pincushion Cactus

    January 31, 2023



    Photographer: Menashe Davidson

    Summary Author: Menashe Davidson

    The pincushion cactus or Mammillaria is a genus in the
    Cactaceae family that’s native to the U.S. and Mexico as well as to
    mid-latitude regions of South America. This cactus is noted for its
    small size (about 6 inches or 15 cm tall), its rounded or cylindrical
    shape, its tubercles (rounded projections) arranged in a spiral pattern
    and its funnel-shaped flowers (about 1 inch or 25 mm in diameter) that
    form a halo around the top.

    I grow this popular cactus in my home garden in Rishon LeZion, Israel.
    They’re tough plants that tolerate a variety of conditions. What
    attracted me most is the crown-like formation of the funnel-shaped
    flowers surrounding the top of the plant (top photo). Mammillaria
    flowers grow out of the axils between succulent nipple-shaped
    tubercles. The axils are covered with wooly hairs or bristles,
    whereas the areoles are often covered with a wool or felt-like
    substance. Their bloom period, during the summertime, is relatively
    short – a few weeks, and these cacti hold their flowers for only about
    one week (bottom photo). Note that when viewing the pincushion cacti
    from above, a very organized and orderly appearance is observed.
    Photos taken on November 18, 2022.

    Rishon LeZion, Israel Coordinates: 31.9730, 34.7925

    Related EPODs

    Pincushion Cactus Bird's Nest Ferns in Singapore Dalene
    Matthee Big Tree Patterns in the Dieffenbachia Plant Lace
    Lichen Golden Torch Cactus Flower

    Plant Links

    * Discover Life
    * Tree Encyclopedia
    * What are Phytoplankton?
    * Encyclopedia of Life - What is a Plant?
    * USDA Plants Database
    * University of Texas Native Plant Database
    * Plants in Motion
    * What Tree is It?

    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.


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