In genus Echitis observationes : quas venia exp. Fac. med. Upsal. præside C.P. Thunberg ...
A dissertation on the plant genus Echitis, presided over by Carl Peter Thunberg and printed at Uppsala in 1819 for the medical faculty there. Its single plate shows botanical drawings of apocynaceous climbing stems, with leaves, tendrils and flower buds drawn in fine pencil-like hatching on a pale page. A designer might take its precise, labelled botanical linework as a model for scientific specimen plates.
