His researches on this trip showed that the tree that produced Alerce timber was the Patagonian Cypress, Fitzroya cupressoides and not Libocedrus tetragona as had been previously thought.
He wrote of the scenery of that part of the Chilean Cordilleras which he explored: "It is of the most charming description: gently undulating meadows covered with a carpet of short grass, placid lakes reflecting from their smooth surface the mountains around, foaming cataracts and gentle rivulets, deep gorges and frightful precipices, over which tumble numerous dark, picturesque waterfalls reaching the bottom in a cloud of spray.
The Embothrium coccineum, Desfontainia spinosa, Philesia buxifolia, three species of Berberis, Pernettya and Gaultheria are the most abundant of the flowering shrubs, whilst the numerous pretty little rock-plants meet one at every step with their various forms and colours.
"[5]Early in 1862 Pearce left Chile and travelled north to Peru and Bolivia, before moving on to Ecuador in search of stove and greenhouse plants.
On his return to La Paz, in November 1865 he also sent back to England a number of Hippeastrums, including H. pardinum and H. leopoldii and some samples of Eccremocarpus which were subsequently lost.
[6] Pearce continued to explore the Andes; one of his final discoveries before returning to Britain was Masdevallia veitchiana, which he discovered in Peru and successfully introduced to cultivation.