BOSTON – As part of its work in making the Longwood Medical and Academic Area (LMA) greener and healthier, the Longwood Collective together with its partners at the MBTA today announced the successful installation of 12 new healthy and appropriately mature Armstrong Maple trees along the Huntington Avenue MBTA median. Longwood Collective coordinated the tree planting with the MBTA to occur earlier this month while MBTA Green Line tracks along Huntington Avenue were closed for upgrades.