Why fungi reward the patient sketcher

Autumn in a British wood offers few subjects as generous to a sketchbook, and few as demanding. A mushroom you find on Tuesday may be a collapsed smear by Friday, so fungi teach you to work quickly and to look properly. They also sit still, which is more than can be said for most wildlife. There is no need to chase anything, no need for binoculars, and no need to coax a subject into view. The cap, stem and gills are all there in front of you, waiting to be understood.

What makes them such good practice is their unfamiliarity. Most of us can draw a leaf from memory; almost none of us can draw a mushroom accurately without close observation. Learning the vocabulary of fungal form — the umbo, the ring, the decurrent gill — sharpens the eye in a way that carries over into every other kind of nature journaling.

The woodland code: look, don't lift

Before you open a sketchbook, settle the ethics. Fungi are the visible part of a much larger organism, and the mycelium beneath your boots is doing work that a single fruiting body cannot show you. Leave everything exactly as you found it. That means no picking, no kicking over, no rolling logs to see what is underneath, and no tidying deadwood because it looks untidy. Rotting wood is the habitat, not clutter.

• Sketch only fruit bodies that are already detached and lying loose; leave them where they fell.
• Keep off moss cushions and leaf litter where you can, and stay on paths on reserves or Sites of Special Scientific Interest.
• Take nothing home but notes, measurements and drawings.
• Work in small numbers, and check site guidelines before you go.

If you want a spore print, take it from a fallen cap and leave the cap in place afterwards. Nothing about good journaling requires a specimen in your bag.

Reading a mushroom: cap, stem and gills

Work through the three features in order, writing as you draw. For the cap, note the diameter in centimetres, the shape (convex, flat, bell-like, funnel), the margin (smooth, wavy, inrolled, striated) and the surface (dry, sticky, scaly, silky). Record the colour twice: once when dry and once after rain, because many species change dramatically.

For the stem, measure length and thickness, and describe the base — straight, curved, bulbous, rooting. Look for a ring, a cup-like volva or any woolly threads. For the gills, the most rewarding detail of all, note how they meet the stem: free, attached broadly, or running down it. Add spacing (crowded or distant), depth, colour, and whether any are forked or half-length. If your subject has pores or spines instead, describe those in the same way.

Then step back and record context: which tree it grows beside, whether on soil or wood, solitary or in a troop or ring, the date, and the weather of the past week.

A field kit that fits a coat pocket

• A5 hardback sketchbook with smooth cartridge paper
• 2B and 4B pencils, plus a waterproof fineliner for dry days
• A pocket watercolour tin and a water brush
• A foam kneeling mat or folded coat
• A x10 hand lens and a small ruler
• A cloth for drying wet hands and wet pages

Keep the kit light and you will use it. Heavy bags encourage excuses. Carry everything out with you, and resist the temptation to tuck interesting finds into a pocket for later — the later rarely comes, and the wood loses more than you gain.

Sketching the form without picking it

Begin with the silhouette, not the details. Draw the outer shape in three or four confident strokes and check the proportions with your pencil held at arm's length. A five-minute timed study is far more useful than a slow, fussy one, because it forces you to see the structure rather than the texture.

For gills, use negative space: draw the pale spaces between the dark lines instead of drawing every line. Hatch lightly under the cap to suggest shadow and give the form weight. Add colour in thin washes, keeping a scrap of white paper as your lightest tone. In damp weather, work in pencil and note colours in words down the margin — "pale cream with a lilac flush" is more useful than a muddy smear.

Annotate as you go, with arrows and short labels. Your notes will outlast the drawing.

Making your journal page worth revisiting

Give each page a header with date, place, grid reference and weather. Set one large study in the centre, then add two or three small thumbnails from different angles — side on, from above, tilted to show the gills. Squeeze in colour swatches, a scale bar, and a line of unanswered questions.

The real reward comes from returning. Visit the same stump or the same path a week later and draw what has changed: a cap that has flattened, a stem that has darkened, a whole troop gone. Those paired pages, drawn calmly and without disturbing a single fruiting body, become a genuine record of a wood in autumn rather than a collection of pretty pictures.