He was at school at Cheltenham, and thence went to the Royal College of Science, and afterwards to Trinity College, Dublin, graduating there with first-class honours and later becoming D.Sc. After spending some years in botanical gardens in Ceylon and Jamaica, he was, in 1886, appointed assistant director at Kew. He was several times sent out to the West Indies on special inquiries and did notable service in improving the production of cotton, sugar, and bananas there. He was knighted in 1903, and died 9 February 1933.
Daniel entered the USA on 19 Jan 1910, via Ellis Island, in transit for Kingston, Jamaica, visiting the Colonial Secretary there. His immigration form described him as a diplomat, married from Maida Vale, London, 5feet 6 inches tall, with pale complexion, grey hair and brown eyes. His brother, the Reverend Henry Morris, was noted as his nearest relative (not his wife!).