Ipomoea pentaphylla
牵牛属
Ipomoea pentaphylla
Ten ways of seeing
- measured cast amber
- upright 1.82 : 1
First Look
真山水之川谷，远望之以取其势，近看之以取其质。
—— 宋·郭熙《林泉高致·山水训》
Mountains and valleys: from afar take their momentum, up close take their texture — the two distances from which any picture is read.
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 where the orange is deepest: the whole tonal order is measured from that patch. The pose leans right: the upper half carries 8 points further right than the lower — a living thing, not a diagram.
Name and Thing
The binomial is Ipomoea pentaphylla: 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 牵牛属 is a modern rendering of the Latin, not an old garden name.
Form and Colour
Measured on this plate: flower colour covers 21.1% of the sheet, foliage 0.0%, the cast amber. No other plate shares exactly this measure. Garden annuals and low perennials: many small, brilliantly coloured flowers to a stem, with leaves palmately lobed, pinnate or entire — the mainstay of the Victorian bedding scheme. Filed under orange — an amber orange, built in washes from a pale ground. 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 21% of the sheet, centred a little left of 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. 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
歌酒优游聊卒岁，园林萧洒可终身。
—— 唐·白居易《從同州刺史改授太子少傅分司》
The poem gives the mood first and the picture supplies the form; set the line beside the plate and the orange the corolla becomes its resting point.
Symbolism
Bedding plants carry no imperial weight; they mean the everyday — window sill, border, festival, gift. Victorian floriography grew up among exactly these flowers. This plate leans orange, which in flower language adds one more degree of feeling. In a flora it is a species first and a symbol second; the order is worth keeping.
Season and Place
under glass they could be had from March. Gathered from everywhere by plant hunters and the glasshouse trade: pelargoniums from South Africa, campanulas from European mountains, lobelias from North America, fuchsias from Chile. The year 1781 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
“Icones Plantarum Rariorum” carries only Nikolaus Joseph Freiherr von Jacquin's name. A plate is collective work: drawer, engraver and colourist were different hands, and the unnamed ones decided how good it looks.
What to Take Away
Next time you stand before a flowering plant, give it three minutes: leaf arrangement, direction of the flower, the darkest patch. The flower of that year is dust, yet its image on paper has outlived every living cousin.
About this plate
Ipomoea pentaphylla is plate 303, 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.
