Lewis Roberts (naturalist)
Lewis Roberts, OAM, (born 1950) is a distinguished naturalist and botanical illustrator. Lewis and his brother, Charlie Roberts, are probably the leading experts on the flora and fauna of south-eastern part Cape York Peninsula and the northern Wet Tropics area. For three generations his family has lived at Shipton's Flat, about 45 km south of Cooktown, where he and Charlie were home-schooled. His father, Jack Lewis, was a tin miner and self-taught naturalist. Background Since about 1960, most of the botanists and zoologists who have conducted research in their area have sought advice or field assistance from the Roberts brothers. Both are "Honoraries" to the Queensland Museum. Lewis Roberts has a particular interest in orchids, especially the species of Cape York Peninsula and the Wet Tropics. He commenced serious study in 1973. Since then, he has collected many specimens, and discovered seven new species, including an unusual orchid, known only at Shipton's Flat, for the National Herbarium in Canberra. This ground orchid, which has been listed in a new genus of its own, was named Cooktownia robertsii, in Lewis' honour. Lewis discovered this rare ground orchid in the 1980s and it was formally described by David Jones, one of Australia's leading orchid taxonomists, in 1997. Many of the local orchid species are rare and have very specific and limited ranges, occurring only in remote, inaccessible places such as particular mountain peaks, swamps or types of rain forest accessible only on foot. Additionally, most orchids flower seasonally, and some for only one or two days a year. In 1993, Lewis began to draw the orchids he found. He is a self-taught botanical illustrator. His early works were in pencil done purely as an aid to identification. He was fastidious about showing the most minute details. He showed some of his penciled works to visiting fellow naturalists, and prompted by them, Lewis began colouring and highlighting his illustrations. He has devised his own techniques to capture the scale and complexity of his subjects, many of which are barely visible to the naked eye. Lewis works in pencil to outline his subject using a magnifying glass, when necessary. He captures the colour of the subject in watercolour, then highlights and shades with pen and ink. Lewis hopes to illustrate a specimen of every orchid species found in north-eastern Queensland. There are over 250 species known in the region and he has completed illustrations of well over 100. Once he has finished the series, Lewis hopes to publish them, along with his field observations on each species, but it will take many more years to illustrate them all. Following the conventions of botanical illustration, Lewis records his subjects comprehensively – plant, flower and fruit. He also dissects the flowers of each to show its various parts – petals, sepal, column, labellum, anther and pollinia. The process is exacting and time-consuming. Not allowing for time taken to find suitable specimens of particular species – some take years – each illustration takes between 2 and 3