Complex sentence: An "U. montana atropurpurea" supplied by Späth was planted in 1896 at the Dominion Arboretum, Ottowa, Canada, while three specimens were supplied by Späth in 1902 to the Royal Botanic Garden Edinburgh, whose practice it was to distribute trees about the city.
Split into simpler sentences: An "U. montana atropurpurea" was planted in 1896 at the Dominion Arboretum, Ottowa, Canada. Specimens of "U. montana"'Atropurpurea' supplied by the Späth nursery in 1902 to the Royal Botanic Garden Edinburgh, whose practice it was to distribute trees about the city.