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Photos from my house in Winnipeg on 2011-Aug29:
Sphinx-moth (Sphingidae sp): from above Sphinx-moth (Sphingidae sp): underside
-- dead moth found in foyer, probably the same one I photographed on 2011-Jul31 and 2011-Aug01

Photos from my front-lawn in Winnipeg on 2011-Aug29:
Goatsbeard (Tragopogon sp): seed-head
-- the seed-head has 17 faces;  several faces are "missing" at the bottom where the stem is;  it may be an icosahedron, a regular polyhedron with 20 identical equilateral triangular faces, five meeting at each of 12 vertices;  having 30 edges, it's one of the five Platonic solids;