Brace yourself, hold on to something, or sit down. I'm afraid this is a deceased pine. Kindling, or compost.
Go ahead and keep it watered. Don't repot, disturbing what is left of the roots now will just guarantee death. There is faint hope it will green up. If it does recover, then we can work on identifying it. If turgor returns to the green needles, and it looks like it is beginning to recover, it will still be 6 months or more before we can be sure the tree is ''out of danger''. Only after the tree is stabilized, will it be time to repot. When you to repot, do a ''half bare root''. In other words, leave about one half the root ball undisturbed. Pines really dislike root disturbance, especially if they are weak as this one is. Keep it in shade until the needles absorb water and become stiff again., until they stand back up a little. Then move it to at least half sun. It will need sun to recover long term. When it starts to put out new growth, back in full sun, sunrise to sunset sun.
Needles of pine are in bundles. Count the number of needles in at least a dozen bundles around the pine. The stone pines will have 1, 2, 3 and 4 needles in bundles in different parts of the tree. There are 3 or 4 species of stone pines, one, Pinus pinea is often sold as a Christmas tree. Many species of pines have 2 needles in a bundle. These usually will be pretty consistent will all the bundles, or the vast majority of the bundles having 2 needles. Pinus radiata and a few hybrids for timber were introduced to Australia and New Zealand for timber plantations. So it could be one of those. The Pinus sylvestris, Scott's pine or Forest pine of Europe is a 2 needle pine commonly used in North America as a Christmas tree. The group of pines related to the North American Ponderosa pine have a mixture of 2 and 3 needles in a bundle with an Arizona USA variety having 4 or 5 needles in a bundle. The ''white pines'' subgenus Strobus, which includes Eastern North American white pine, Japanese white pine and Chinese lacebark pine all have 5 needles except the Lacebark pine which has 3 needles. These are normally not used for Christmas trees in the USA.
So you can see the number needles will help in determining identity. If it lives.
But it likely will perish. So this ''excess typing'' is my trying to be friendly and kill time avoiding some household chores I should be doing right now.
