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Rowan or Mountain ash Sorbus aucuparia pen and ink botanical illustration

Rowan or Mountain ash, Sorbus aucuparia sketchbook study

Rough meadow grass Poa trivialis botanical illustration

Botanical illustration of Rough hawkbit Leontodon hispidus

Rosebay willowherb Epilobium or Chamaenerion angustifolium

Rock cinquefoil Potentilla rupestris showing the flowers above a basal rosette of leaflets

winter jasmine Jasminum nudiflorum sketchbook study

Three cornered leek Allium triquetrum pen and ink illustration with detail of one flower

Sweet vernal grass Anthoxum odoratum botanical illustration with details of spikelet and ligule

Sweet orange Citrus sinensis in bloom with single flower in detail.

Sweet chestnut Castanea sativa pen and ink line drawing with details of nut and prickly seed case

Sweet chestnut Castanea sativa sketchbook study with colour details of an individual chestnut,  seed case, and leaf

Stirtons Whitebeam Sorbus stirtoniana. Botanical illustration of this very rare tree with blossom, individual leaves, and a cluster of red berries

Sticky catchfly Silene viscaria cut to white botanical illustration

Staghorn sumac Rhus typhina sketchbook study,  showing an individual flower and a habit sketch

Spiked speedwell Veronica spicata botanical illustration of this rare pyramid shaped blue wild flower

Soft brome Bromus hordeaceus grass showing growth habit and botanical details of spikelet and ligule

Japanese Knotweed Fallopia japonica plant including roots underground

Plum Prunus domestica line drawing with detail of half fruit and plum blossom

Pineapple weed Matricaria discoidea line drawing with detail of single disc floret

Pineapple mayweed Matricaria discoidea showing a whole plant with flowers and roots

Pignut Conopodium majus with details of flower, root, and shoot

Passion flower Passiflora sketchbook study with illustrations of the flowers and fruit

Pansy Viola tricolor sketchbook study with a focus on the flower colours