Flower such as the "Sarracenia" or lady-slipper orchids, have elaborate designs to ensure pollination while preventing self-pollination. "Anemophilous": flowers use the wind to move pollen from one flower to the next, examples include the grasses, Birch trees, Ragweed and Maples. They have no need to attract pollinators and therefore tend not to grow large blossoms. Whereas the pollen of entomophilous flowers tends to be large-grained, sticky, and rich in protein (another "reward" for pollinators), anemophilous flower pollen is usually small-grained, very light, and of little nutritional value to insects, though it may still be gathered in times of dearth. Honeybees and
Slipper lobster lobster", "crayfish", "slipper bug" and "squagga". Rarer terms include "flathead lobster" (for "Thenus orientalis") and "bulldozer lobster". In Greece they may be known as Kolochtypes which roughly translates as 'bum hitter'. Twenty-two genera are recognised, the majority of which were erected in 2002 by Lipke Holthuis for species formerly classified under "Scyllarus": Scyllarinae Arctidinae Ibacinae Theninae incertae sedis The fossil record of slipper lobsters extends back 100–120 million years, which is considerably less than that of slipper lobsters' closest relatives, the spiny lobsters. One significant earlier fossil is "Cancrinos claviger", which was described from Upper Jurassic sediments at least ,