ruellia simplex flower tree on farm

acanthaceae angustifolia beautiful bloom blooming blossom bluebell botanical botany britton brittoniana cash chlorophyll closeup crops decorative ecology environment family field flora floral flower flowering foliage garden gardening horticulture houseplant invasive mexican natural nature ornamental perennial petunia photosynthesis plant pretty purple ruellia shrub simplex smell spring summer trumpet trumpetshaped tubular vine violet wild wildflower