yellow flowers rudbeckia triloba or brown-eyed susan, three-lobed or thin-leaf coneflower in beautiful sunny day

autumn background beautiful beauty black bloom blooming blossom botanical botany bright browneyed colorful coneflower day eyed flora floral flower flowering flowers foliage garden gardening golden green greenery herb landscaping leaf macro meadow natural nature ornamental outdoors park perennial petal plant rudbeckia summer sunny susan takao thinleaf thinleaved threelobed triloba wallpaper wildflower yellow