red is right, seaglass. i believe it may be the red reishi:
ii found it quite randomly on a wonderful website (http://www.forestharvest.com) that lists edible mushrooms in season in Massachusetts, with photos. That's what I needed ! I recognize most of the mushrooms shown from our walks about Boston surroundings. Weee!
Reishi s good for medicinal tea and has several healing powers. this here from a chinese website:
Features: 
1) Latine name: ganoderma lucidum
2) Part used: the whole mushroom top
3) Specification: polysaccharides 10%, 20%, 30%, 40%
4) Description: reishi is that age old medicine cited thousands of years ago in 
    several texts and scripts as being a tonic for emperors. At one time this 
    mushroom was specifically used under the prestigious vestiges of the ruling 
    class, but it has since made its way into the pantries of us common folk. 
    Traditional and contemporary Chinese medicine admires it as a tonic benefiting 
    vital energy or "qi", and it is popularly prescribed for a multitude of maladies. 
    Reishi is a polypore mushroom, growing in damp, dark forests and the occasional
    rotting log. Modern demand has forced its cultivation in Japan, China and the 
    United States which is promising for the wild stands of Reishi
5) Function: ganoderma lucidum can anti-tumor, protect liver, activate heart and 
    blood vessel functions, anti-aging, anti-nerve weakness, anti-hypersusceptibility,
    treat high blood pressure, treat diabetes, is helpful to treat chronic bronchitis 
    and bronchia asthma, 
and can beautify (!)
6) Application: beverage, function food, medicine and supplement food