bloom flora flowers fragrant garden garden-plant lilium lily outward-facing-flowers pink toxic upright-herbaceous-plant Asian Asteraceae blooming blooms clusters curled curling distinctive flower-heads flowering-plant herbaceous-species ironweed lobes medicinal-plant overlapping-bracts perennial-plant petal-cluster petal-strands petals plant purple shrub stiff-upright-plant vernonia wildflower Easter-lily environmental-weed Formosa-lily Formosan-lily lilium-formosanum lilium-longiflorum lilium-philippinense lilium-yoshidai November-lily St-Joseph's-lily Taiwan-lily teppouyuri trumpet-lily trumpet-shaped unbranched-stems white