Horse Chestnut Crann cnó capall (Aesculus hippocastanum) 6641. If any trees on the campus are massive it is surely this pair. These large growing trees with a dome shaped outline are recognised by their large digitate or hand-like foliage in summer and sticky buds in winter. In early summer cream coloured flowers stand like candles among the leaves. In autumn fruit in shiny brown in a thick globular seed coat, which splits open to reveal a mahogany coloured shiny seed, known as a ‘conker’. Native to Greece and Albania it was introduced in cultivation about 1616. These trees probably date from the 1850’s. (Source: Dr Mary Forrest, UCD).