Carl Linnaeus signature

A large rounded C begins Carl, followed by a small separated v and a longer Linné group.

Carl Linnaeus's signature
Vector tracing of the signature specimen. Image credit: Carl Linnaeus · Public domain.

What does Carl Linnaeus’s signature look like?

A large rounded C begins Carl, followed by a small separated v and a longer Linné group. The surname includes a low looping return and a detached accent above its later letters. Compare the three spaced regions with the connections inside each word: the signature stays readable while changing scale between initials and smaller forms.

Slant
≥ +40°forward
Baseline
+1.4°near level
Width / height
4.31 : 1overall proportions
Opening height
2.22×opening versus body letters

About Carl Linnaeus and this autograph

Carl Linnaeus (23 May 1707 – 10 January 1778) was a Swedish botanist, physician and zoologist. This specimen is the Wikimedia Commons vector rendering of Carl Linnaeus’s signature.

Carl Linnaeus signature and handwriting analysis

Carl Linnaeus’s signature sample has a forward slant at the edge of the measured range, a near-level baseline and 2 enclosed loops. Comparing autograph strokes, baseline angle (+1.4°), slant (+40°), opening ratio (2.22×) and enclosed loops (2) reveals how individual signature traits contrast with standard handwriting features. Use the layers to follow the writing line, letter band, slant and enclosed loops.

Slantforward
≥ +40°
Baselinenear level
+1.4°
Width / heightoverall proportions
4.31 : 1
Opening heightopening versus body letters
2.22×
Enclosed loopsclosed spaces in the image
2
Ink groupsmain disconnected groups
4
Ink densityinside the signature bounds
11.7%
Underlineno long lower flourish
None
Finish heightrelative to the letter body
+0.40×

Opening, letter body and finish

The enlarged opening stands above the smaller letters. The opening-to-body ratio is 2.22×, while the whole image is 4.31 times as wide as it is tall. The rightmost ink finishes above the writing line; look at this ending separately from the slant of the letters themselves.

Loops and the lower flourish

The sample contains 2 enclosed loops and 4 main ink groups. The letterforms carry the main horizontal movement; there is no long lower underline detected beneath their band.

All 11 measured signature features

Slant

≥+40°
−450°+45Slant ≥+40° from vertical≥+40° from vertical

Angle of the letter strokes from vertical. Positive angles lean right; negative angles lean left.

The signature has a forward slant (≥+40°). The blue-green guides show the lean of strokes across the name.

Baseline

+1.4°
Baseline +1.4 degrees from horizontalstartfinish+1.4° · dashed = level

Direction of the writing line from the beginning to the end of the signature.

The writing line stays nearly level (+1.4°). The red guide follows the base of the letters, separate from lower loops and flourishes.

Opening capital

2.2×
Opening height 2.2 times following lettersopeningbody2.2×1×

Height of the opening letter relative to the typical letters that follow. 1× means similar heights.

The opening stands 2.2 times as high as the following letters. The purple box marks its area; the dashed blue guide marks the letter-body band.

Enclosed loops

2
2 enclosed loops highlighted in the measured signature2 enclosed spaces

Closed spaces surrounded by ink, counted across the whole signature.

There are 2 enclosed loops in the sample. Orange outlines locate them. Compare their size and placement within the name.

Ink groups

4
4 connected ink groups; each circle represents one groupeach circle = one ink group4 groups in the sample

Separate connected areas of ink in the image. Dots or detached letters can form additional groups.

The signature contains 4 main ink groups. The visible ink is divided into separate shapes. Look at where those shapes join or separate.

Ink density

12%
11.7 percent of signature area filled with ink11.7% filled areagrid = 100% of signature area

Share of the signature’s enclosing rectangle occupied by ink.

Ink covers 12% of the measured signature area; the rest is open space. Compare the open areas with the thickness of the visible strokes.

Underline / flourish

None
Measured signature without a long lower underlineNo lower underline

Length of a lower underline or flourish compared with the full signature width.

No long lower underline is detected. The name is carried by the letterforms and their own lower strokes.

Finish height

+0.4×
Finish +0.4 typical letter heights from baseline1×baseline+0.4× · above / below line

Height of the rightmost ending above or below the baseline, in typical letter heights. Positive is above; negative is below.

The ending sits close to the writing line (+0.4 letter heights). The orange guide locates the finish relative to the red baseline.

Width / height

4.3 : 1
Signature ink width 1297 pixels and height 300 pixels1297 px wide × 300 px high

Full ink width divided by full ink height, including the signature’s tall and low strokes.

The shape is 4.3 times as wide as it is high. Its ink spans 1297 × 300 image pixels. Compare the horizontal spread with the vertical reach of the capitals and loops.

Ornamentation

2.7×
Stroke path 3453 pixels compared with 1297 pixel signature widthstroke path3,453 pxname width1297 pxpath is 2.7× the width

Total traced stroke length divided by signature width. More turns and retraced shapes add length.

The traced strokes total 3,453 pixels, about 2.7 times the signature’s width. Look for loops, turns and flourishes that add movement within that width.

Angularity

3.1
3.1 corners per 100 pixels of ink outline02.55corners per 100 px of outline

Number of corners per 100 pixels of traced ink outline. Higher values indicate more frequent sharp turns.

The outline contains about 3.1 corners per 100 pixels. Inspect the turns in the pen-path layer and compare pointed changes of direction with rounded curves.

Signatures with similar shapes

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