VectorPaint ginkgo leaves: retain fan outlines and forked veins

English translation of the Chinese original, translated on 2026-11-09. Original publication dates, attribution, code and version notes are retained.

A ginkgo leaf is more than a stretched pointed leaf. Organise its fan, base and branching veins together. Draw an original leaf and compare shallow-notched versus no-obvious-central-notch shapes. References bound morphology; do not copy institutional images, treat illustrative lines as identification or assume an automatic vein generator.

Read morphology before defining the drawing

Use Kew’s ginkgo account for its fan-leaf identity and the Kew-authored botanical paper for branching venation and variable shape. Adopt only morphology, not medicinal, age or habitat inferences. Label an original simplified single leaf, not a whole branch. Separate photograph damage from intact outline, without treating insect loss as universal structure or the species name as proof of exactly two lobes on every leaf.

Start at the petiole-to-fan base

Place a narrow base low on the canvas with room for a broad fan above. Connect a separate narrow petiole shape or stroke to that base rather than attaching a rod arbitrarily at the side. Expand side edges outward and join them with a broad upper curve to close the surface. Slight asymmetry is acceptable; a compass-perfect sector is unnecessary. Enlarge the base to verify attachment without a thick stalk obscuring its taper. Coordinates are composition references, not centimetres inferred from pixels. Defer veins so detail cannot distract from the outline.

Choose the notch for this leaf rather than all leaves

Make a shallow central notch first, dipping inward and returning while retaining continuous blade tissue rather than cutting to the base into two separate leaves. Duplicate a no-obvious-notch version changing only the upper edge, retaining petiole/base attachment. Both may have gentle irregularity without repeated sharp teeth. Documented variation does not make arbitrary outlines ginkgo; still check fan/base relationships. Label two original shapes rather than inventing cultivar or season identities.

Spread a few veins before branching

Spread a few initial vein directions from near the base, branching each into two as they extend outward. Avoid one dominant central midrib with fishbone side branches: this task expresses forked spreading. Begin with three branching groups, checking connected starts and endings within or at the blade edge, never in the background. Vary branch positions rather than creating a false transverse beam at one height. The number of drawn veins is an illustrative reduction, not the actual count on a leaf.

Vary density without inventing a mesh

Balance large gaps among the three groups before adding another branching generation. Follow existing directions rather than filling every gap with crossing lines. Repair accidental crossings directly instead of obscuring them ambiguously through opacity. At a crowded base, shorten secondary traces or reduce coincident strokes while retaining outward spread. Group veins separately from the outline. After changing a notch, inspect nearby endings rather than lowering the boundary and leaving old lines floating.

Test the fan in colour and monochrome

Use green with paler veins or yellow with darker fine traces if desired, without deriving season or health from colour. Duplicate a monochrome check and hide veins to inspect fan, base and petiole alone. Restore a few main traces and check for an unintended fishbone leaf. If reduced veins merge into a solid mass, reduce count/weight instead of enlarging the leaf until composition changes. Compare notch variants at one viewing scale rather than attributing size-induced density changes to morphology.

Inspect node spikes and overruns in output

Save the editable source and inspect an exported PNG normally and enlarged. Check notch spikes, a split petiole junction and veins crossing the upper boundary. Hide manual morphology references actively; their names do not prevent export. For transparency inspect remaining background objects instead of mistaking white background for blade tissue. For another format’s differences, isolate outline and a few veins in a copy rather than overwriting the source or claiming universal curve compatibility.

Repair outline, base and veins separately

For a pointed ordinary leaf inspect fan width and tapered base; for two separate leaves inspect a severing notch; for netted venation inspect branch paths/crossings rather than recolouring first. Repair one layer and recheck connections to the other two. Preserve notched, unnotched, monochrome and exported views plus source records. The result is a morphologically informed illustration, not precise anatomy, cultivar identification or proof of automatic vein recognition.