Respiratory

Siberian Larch

Larix sibirica

Siberian Pine (Siberian Cedar)

Pinus sibirica

Siberian Spruce

Picea obovata

Siler

Saposhnikovia divaricata

Silver Wattle

Acacia dealbata

Skunk Cabbage

Symplocarpus foetidus

Sneezewood

Ptaeroxylon obliquum

Southern Blue Gum

Eucalyptus bicostata

Southern Magnolia

Magnolia grandiflora

Spicebush

Lindera benzoin

Stone Pine

Pinus pinea

Sweet Chestnut

Castanea sativa

Tea Tree

Melaleuca alternifolia

Thyme

Thymus vulgaris

White Ginger Lily

Hedychium coronarium

Wild Black Cherry

Prunus serotina

Wild Mint

Mentha longifolia

Wild Rosemary

Eriocephalus africanus

Wild Thyme

Thymus serpyllum

Woolly Gerbera

Gerbera piloselloides

Yellow Tea-tree

Leptospermum flavescens

Yellow Wood Violet

Viola biflora

Yezo Spruce

Picea jezoensis

Yuan Zhi (Chinese Senega Root)

Polygala tenuifolia