Cuscuta: A plant genus of the family Cuscutaceae. It is a threadlike climbing parasitic plant that is used in DRUGS, CHINESE HERBAL.Convolvulaceae: The morning glory family of flowering plants, of the order Solanales, which includes about 50 genera and at least 1,400 species. Leaves are alternate and flowers are funnel-shaped. Most are twining and erect herbs, with a few woody vines, trees, and shrubs.Genome, Plastid: The genetic complement of PLASTIDS as represented in their DNA.Corchorus: A plant genus of the family TILIACEAE. Members contain cycloartane saponins and CARDENOLIDES.Mikania: A plant genus of the family ASTERACEAE. Members contain scandenolide (a sesquiterpene lactone) and germacranolides.Pelargonium: A plant genus of the family GERANIACEAE. The common name of geranium is also used for the GERANIUM genus.Calotropis: A plant genus of the family ASCLEPIADACEAE. The downy akund floss fiber from the seeds is used like kapok.Plastids: Self-replicating cytoplasmic organelles of plant and algal cells that contain pigments and may synthesize and accumulate various substances. PLASTID GENOMES are used in phylogenetic studies.