Artwork
Datura Ceratocaulon

Datura Ceratocaulon is a watercolor work on paper by Johann Knapp. It dates from 1850 and is held in the collection of the Victoria and Albert Museum.
About this work
Overview
This 1850 watercolour by Johann Knapp presents a single specimen of *Datura ceratocaulon*. The composition isolates the plant against a light, unadorned background, drawing the eye to its robust brown stem, broad dark‑green leaves, and a tall, white tubular flower whose tip widens. The rendering balances botanical accuracy with a modest aesthetic restraint.
Subject & Meaning
The work records the thorn‑apple species known scientifically as *Datura ceratocaulon*. Its large, waxy foliage and trumpet‑shaped bloom, marked by delicate purple veins within the white corolla, illustrate key identifying features. By emphasizing these traits, Knapp provides a clear visual reference for scholars and collectors interested in the plant’s morphology.
Technique & Style
Executed in transparent watercolour, the drawing relies on fine washes to model the leaf veins and stem texture, while the flower’s interior is suggested through subtle purple streaks. Knapp’s precise line work and restrained palette convey a near‑photographic realism, yet the soft background maintains a sense of depth without distracting detail.
History & Provenance
Created in 1850, the piece is part of a broader 19th‑century tradition of scientific illustration, where artists like Knapp supplied accurate depictions for botanical study. The watercolour now resides in the collection of the Victoria and Albert Museum, where it is catalogued among other botanical works that document plant diversity during the period.
Artist & collection















