Eucalyptus spp. of the family Myrtaceae. Aka coolabah, this wood is native to Australia. There are at least half a dozen eucalyptus species that have this common name and given that there are approximately 6,000,000 different species of ecualypus available in Australia, I'm not even going to TRY to distinguish them.
my samples: NOTE: these pics were all taken in very bright incandescent lighting ("soft white" at 2700K) colors will vary under other lighting conditions
both sides of a sample plank of coolibah / Eucalyptus intertexta --- HUGE enlargements are present. This sample was loaned to me by Mark Peet whom I thank for this and other contributions to the site.
end grain and end grain closeup of the piece directly above