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Saturday, September 1

  1. page Two-toned Scalecap Mushroom edited Miranda Davies September 1, 2012 {IMG_3691.jpg} Photo credit: Miranda Davies ​ Kingdom: Fung…
    Miranda Davies
    September 1, 2012
    {IMG_3691.jpg} Photo credit: Miranda Davies

    Kingdom: Fungi
    (view changes)
    4:17 pm
  2. file IMG_3691.jpg uploaded
    4:10 pm
  3. page Two-toned Scalecap Mushroom edited ... The spread of the droplet over the surface of the spore involves the breaking of surface tensi…
    ...
    The spread of the droplet over the surface of the spore involves the breaking of surface tension. This breaking of surface tension creates a net force that pushes the spore downward against the sterigma. The sterigma is an elastic but highly pressurized body, and the pressure of the downward force of the spore results in an equal and opposite force that is strong enough to launch the spore away from the basidium. This mechanism has been called "the surface tension catapult". The spore is launched far enough so that before reaching free-fall it will be well clear of the hymenium (the basidia and cystidia, collectively) from which it originated, but not so far that hits the opposite hymenophoral wall.
    The role of the characteristic mushroom shape in maintaining the first of these parameters is quite straightforward when one notes the resemblance of a mushroom to a sunshade or umbrella. Shading the hymenophores from direct sunlight helps prevent humidity from evaporating away, while preventing rainwater from reaching the hymenium prevents hydrophilic compounds from being washed away.
    McKnight, Kent H. and Vera B. Peterson Field Guide to Mushrooms of North America. New York: Houghton Mifflin Company, 1987.
    In Mykoweb. Retrieved 11:23, September 1, 2012, from http://www.mykoweb.com/articles/mycomorphology_1.html
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    3:47 pm
  4. page Two-toned Scalecap Mushroom edited ... Class: Agaricomycetes Identifying Characteristics: Clusters of medium size, thin, brown, sm…
    ...
    Class: Agaricomycetes
    Identifying Characteristics:
    Clusters of medium size, thin, brown, smooth caps.
    Caps fade in color from center outward. Colors are moderate brown to a strong yellowish brown when moist, fading to pale, light yellow.
    Brown gills.
    Stiff, brown stalk, cylindrical, sometimes tapered toward base, fibrous, becoming hollow..
    Cap is rounded or bell shaped, sometimes expanding to flat with a low hump.
    Surface is smooth, slightly sticky.

    Adaptations:
    LikeFound in small to large clumps on decaying logs, stumps, or occasionally on buried wood.
    Like
    all mushrooms,
    ...
    that has adatedadapted to drop
    Spore release begins with the formation of a liquid droplet, known as Buller's drop, at the base of the spore. Buller's drop is formed when the spore releases a dense hydrophilic solution of mannitol and hexose sugars. This solution is so strongly hydrophilic that it literally draws water out of the air, causing the Buller's drop to grow. About a minute after Buller's drop forms, the droplet rapidly spreads over the surface of the spore, an event that is immediately followed by spore release.
    The spread of the droplet over the surface of the spore involves the breaking of surface tension. This breaking of surface tension creates a net force that pushes the spore downward against the sterigma. The sterigma is an elastic but highly pressurized body, and the pressure of the downward force of the spore results in an equal and opposite force that is strong enough to launch the spore away from the basidium. This mechanism has been called "the surface tension catapult". The spore is launched far enough so that before reaching free-fall it will be well clear of the hymenium (the basidia and cystidia, collectively) from which it originated, but not so far that hits the opposite hymenophoral wall.
    (view changes)
    3:44 pm
  5. page Katharine Johnson edited ... Prairie Dropseed Canadian Tick Trefoil 8/14/12 - Lowland Forest 8/15/12 - Upland Forest …
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    Prairie Dropseed
    Canadian Tick Trefoil
    8/14/12 - Lowland Forest
    8/15/12 - Upland Forest
    Spinulose Wood Fern
    ...
    Fleshy Hydnum
    Brick Cap
    8/30/12 - Shrub Carr
    9/5/12 - Fen/Bog

    (view changes)
    2:25 pm
  6. page Eastern Box Turtle edited Miranda Davies September 1, 2012 {box turtle.jpg} Photo credit: Miranda Davies Kingdom: Anima…
    Miranda Davies
    September 1, 2012
    {box turtle.jpg} Photo credit: Miranda Davies
    Kingdom: Animalia
    Phylum: Chordata
    (view changes)
    8:45 am
  7. file box turtle.jpg uploaded
    8:44 am
  8. page Miranda Davies edited ... Cedar Waxwing 8/28/12 - Swamp Dodder Eastern Box Turtle Two-toned Scalecap Mushroom 8/3…
    ...
    Cedar Waxwing
    8/28/12 - Swamp
    Dodder
    Eastern Box Turtle
    Two-toned Scalecap Mushroom

    8/30/12 - Shrub Carr
    9/5/12 - Fen/Bog
    (view changes)
    8:31 am

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