colour

Rosemary Rosmarinus officinalis sprig

Silver birch Betula pendula bark study with a small layer of bark curling off the tree

Rowan Sorbus aucuparia tree sapling tree without leaves, in pen and ink

Rowan Sorbus aucuparia tree ink drawing without leaves

Rowan Sorbus aucuparia sprig of leaves, clutch of orange berries and white flowers

Rye grass Lolium perenne and individual spikelet

Rye Secale cereale whole plant and seedhead

Sage Salvia officinalis in flower

Red currant Ribes rubrum showing the shiny red currants and birght green leaves and flowers

Red Dead Nettle Lamium purpureum two flowers with a tangle of small leaves at their base

Reed canary grass Phalaris arundinacea pencil drawing of the spike

Reed Phragmites australis

Reedmace Typha latifolia rhizome detail with roots and vegetative shoot growing from a rhizome

Primrose Primula vulgaris

Remote sedge Carex remota plant with ligule and glume and fruit detail

Proso millet Panicum miliaceum with two seed heads

Rice Oryza sativa plant

Purple Loosestrife Lythrum salicaria pencil drawing

Remember me Rose with three flowers and a bud, and the blue green leaves

Purple Loosestrife Lythrum salicaria with three flowering spikes

Purple Moor Grass Molinia caerulea

Purple ramping fumitory Fumaria purpurea with fruit and bud

Pyramidal orchid Anacamptis pyramidalis

Raceme diagram to show this flowering structure