recent taxonomic analysis of the relationships within the caryophyllales indicate that the droseraceae, "triphyophyllum", nepenthaceae and "drosophyllum", while closely related, are embedded within a larger clade that includes non-carnivorous groups such as the tamarisks, ancistrocladaceae, polygonaceae and plumbaginaceae. the tamarisks possess specialised salt-excreting glands on their leaves, as do several of the plumbaginaceae (such as the sea lavender, "limonium"), which may have been co-opted for the excretion of other chemicals, such as proteases and mucilage. some of the plumbaginaceae ("e.g." "ceratostigma") also have stalked, vascularised glands that secrete mucilage on their calyces and aid in seed dispersal and possibly in protecting the flowers from crawling parasitic insects. the balsams (such as "impatiens"), which are closely related to the sarraceniaceae and "roridula", similarly possess stalked glands.