rules of botanical drawing

Botany 2014 Susan Jonsson-Ninniss

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Biology 2P93Rules of Botanical Drawing

http://www.bookiejar.com/Content/Books/7ccbe2a1-12a9-41fa-a3ff-0f8ebaf40ef6/4060_r1/22165/www.gutenberg.org@files@22165@22165-h@[email protected]

Preparation of Botanical Drawings

•The purpose of a botanical drawing is to make an accurate, systematic and informative account of a specimen or a histological slide•The preparation of such a drawing provokes critical examination of the material, provides a permanent record for future reference and serves as a study guide for the exams•Artistic talent is not necessary; developing your skills of observation and drawing what you see following the guidelines outlined below can accomplish a good drawing •The tools you need are, a sharp pencil, an eraser and a ruler

Botany 2014Susan Jonsson-Ninniss


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Morphological Drawings

•All histology slides provided are to be drawn with the naked eye, with no tracing.

•To enhance drawing clarity each must be at least 10 cm x 10 cm and include enough material to characterize a particular plant slide.

•Drawings should be positioned slightly to the left of the page and whenever possible the long axis of the specimen should be drawn vertically on the page to accommodate labels.

•Sketches of plants are not acceptable, it is important that the ends of lines do not overlap and gaps do not appear where, in fact lines join.

•Stippling but not shading is permissible.

•Captions must accompany each drawing and the rules regarding correct labelling are to be followed for every submission.

Tissue and Cellular Drawings

•Lightly draw an outline of the specimen or part of the specimen equal to an area at least 10 cm x 10 cm. Make a tissue diagram of the internal structures so you achieve a drawing of the outline of the tissue leaving out the individual cells•With broken lines designate an area of the drawing that will include the structure and tissues to be drawn in detail. It is important to include an area large enough to provide information about the super-structure of the specimen•Brackets and labels should be included within the broken lines•Drawing a partial section saves time


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Tissue and Cellular Drawing Partial Section

Eaton, 2013

• Tissue and Cellular Drawings• Now draw individual cells, giving special attention to shapes

of and relative sizes of cells, as well as the thickness of the cell wall

• Avoid producing sketchy lines that do not meet or lines that overlap at the ends

• In your drawings one of the objects is to relate form and function

• Figuratively speaking, in cells drawn with large gaps, cytoplasm and other organelles could not be contained


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• If in doubt as to what your drawing should look like, check out some of the other hand drawn illustrations in this presentation

• To highlight cellular inclusions, to give the effect of depth, or to indicate different color densities, always stipple, DO NOT SHADE


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Eaton, 2013

Captions

• All drawings must include a caption or a description of what has been drawn on the upper right hand corner of the diagram

• It should include:• Taxonomic Phylum• Genus and species • Title• Aspect


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Caption example

• On the upper right hand corner of the diagram

• Phylum: Psilotophyta• Genus and species: Psilotum nudum (Note that the genus

is always capitalized. Note that genus and species are either underlined or italicized. If the species is unknown the caption would read Psilotum sp.)

• Title: Aerial Stem (so what you have drawn)• Aspect: either longitudinal section (l.s) or cross section

(x.s), or perhaps morphological if you are drawing an actual physical depiction of a plant


Labels

• List the labels required for your drawings on a separate paper for placement later

• Your ability to distinguish between important and extraneous material will in part, determine your marks

• This means that some drawings will be adequate with a few labels and others will require more

• Before labeling place a light line just to the right of the drawing to insure the alignment of label lines. (Erase the guideline before submission)


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Labels

• All labels and label lines should be parallel to the bottom of the page and to the right of the diagram no matter what you see in your text. On the left the label line must terminate in or on the structure

• Structures and regions of cells, either with the same cell type or a different cell type should be bracketed. Individual cells within the bracket should not be labeled. Label these cells elsewhere in the diagram


Labels• Do not label the same structure twice and don’t use one

label line to indicate two similar structures or cells.

• Do not cross label or bracket lines.

• Do not use color or ink on drawings, only pencil

• Following this slide is an example of a previous drawing with proper label lines (sorry took the label off…groan) on the right hand side of the drawing, lines go right into the structure, and all lines are aligned directly one under the next



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Lovely label lines

A lovely caption, upper right hand corner of page


Happy Drawing!


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