Euphorbia diffusa
Euphorbia diffusa|金虎尾目
Euphorbia diffusa
Ten ways of seeing
- measured cast yellow-green
- upright 1.79 : 1
First Look
竖划三寸，当千仞之高；横墨数尺，体百里之迥。
—— 南朝宋·宗炳《画山水序》
A vertical stroke of three inches stands for a cliff of a thousand fathoms; a few feet of ink holds a hundred li.
The sheet is vertical: the eye climbs and settles in the upper half. Let the plant stand before you look for detail. Then step in close: watch where colour meets line, and whether the line ever breaks. Third, find the darkest small patch: the whole tonal order is measured from there. The pose leans left: the upper half carries 9 points further left than the lower — a living thing, not a diagram.
Name and Thing
The binomial is Euphorbia diffusa: the first word is the genus it belongs among, the second the epithet that sets it apart. Two words carry a whole provenance. The Chinese name 金虎尾目 is a modern rendering of the Latin, not an old garden name.
Form and Colour
Measured on this plate: flower colour covers 4.9% of the sheet, foliage 0.0%, the cast yellow-green with a second note of amber. No other plate shares exactly this measure. Tropical plants defy temperate habits: heavy, saturated flowers with strong scent, leathery or dissected leaves, stems that climb, swell, or reduce to spines.No colour group is recorded. Read the outline, then the colour layers, then the brush.
Composition
The sheet is tall. No details are appended: a plate for looking, not for keying out. The plant covers only 7% of the sheet, centred near the centre; the emptiness is where the eye rests.
Line and Colour
Eighteenth-century plates are mostly copper engraving: hatched lines for shadow, then hand-colouring by another hand. Craft leaves franker evidence than inscriptions. If you mean to copy it: take its skeleton, its margins and the order of its colours; the burin's hatching is the language of copper — suggest it with pencil density, do not imitate it stroke for stroke.
Poetic Resonance
对织芭蕉雪毳新，长缝双袖窄裁身。
—— 唐·王建《花褐裘》
The poem gives the mood first and the picture supplies the form; set the line beside the plate and the corolla becomes its resting point.
Symbolism
In China these plants carry no classical symbolism; their meaning is newness — new worlds, new species, new trade routes. They show natural history's expanding edge. Meanings change their tune: the same flower can say opposite things within a century.
Season and Place
flowering follows the first rains, so a month on the plate often means 'after the rain'. Central and South America, Southeast Asia, India, Ceylon. Eighteenth- and nineteenth-century artists either sailed with the ships or drew from living specimens under glass. The year 1781 on the plate is that of publication, not of flowering — the gathering came a year or two earlier. See this kind of plate in the flowering season if you can: once you have met the living flower, you stop reading only colour.
The Book and the Hand
“Icones Plantarum Rariorum” carries only Nikolaus Joseph Freiherr von Jacquin's name. From drawing to plate the sheet passed through several hands — the engraver aimed at accuracy, the colourist at speed, and between them lies each plate's unevenness.
What to Take Away
If you keep one line, keep Guo Xi's: from afar its momentum, up close its texture. The flower of that year is dust, yet its image on paper has outlived every living cousin.
About this plate
Euphorbia diffusa is plate 187, from Icones Plantarum Rariorum, drawn by Nikolaus Joseph Freiherr von Jacquin. This public-domain plate is reproduced at high resolution, free to view and download. Publication: Vindobonae, C.F. Wappler, 1781-1793.
