Diplusodon marginatus (1827)
莲薇属
Diplusodon marginatus (1827)
Ten ways of seeing
- measured cast red
- upright 1.60 : 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 24 points further left than the lower — a living thing, not a diagram.
Name and Thing
The binomial is Diplusodon marginatus: 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 莲薇属 is a modern rendering of the Latin, not an old garden name.
Form and Colour
Measured on this plate: flower colour is sparing, 0.5% of the sheet against 4.2% of foliage, the cast tending red — as with pale or white blooms, outline and tone do the talking. 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. Three things fix the habit: leaf arrangement, tepal count, and how the flower is borne.
Composition
The sheet is tall. No details are appended: a plate for looking, not for keying out. The plant covers only 17% of the sheet, centred near the centre; the emptiness is where the eye rests.
Line and Colour
The first half of the nineteenth century moved from copper to steel to lithography; stipple could render the softest transition. There is evidence on the back too: the plate mark pressed into the paper, the slight relief of the pigment, lines worn shallow in a later printing. 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
山城过雨百花尽，榕叶满庭莺乱啼。
—— 唐·柳宗元《柳州二月榕葉落盡偶題》
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. Flower language was added later; the flower knows nothing of it, and that innocence is part of its power.
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 1827 on the plate is that of publication, not of flowering — the gathering came a year or two earlier. Read the locality and the flowering season both with a discount: one is hearsay, the other a ten-day peak.
The Book and the Hand
“Plantarum Brasiliae icones et descriptiones hactenus ineditae” carries only Johann Baptist Emanuel Pohl's name. The image is public domain; the hand-colouring is still one person's hand.
What to Take Away
Carry three rules away: whole before detail; line before colour; picture before book. Two centuries on, the plant may still flower in some garden; the one on this sheet stopped in the season of 1827.
About this plate
Diplusodon marginatus (1827) is plate 66, from Plantarum Brasiliae icones et descriptiones hactenus ineditae, drawn by Johann Baptist Emanuel Pohl. This public-domain plate is reproduced at high resolution, free to view and download. Publication: Vienna, Antonii Strauss, 1827.
