Botanical Families

Small family of Australian carnivorous plants (and one species from Papua New Guinea) of genus Byblis, known as rainbow plants for the iridescent glitter of their sticky glands. With 7 species, they are morphologically similar to Drosera but not related. Flowers are actinomorphic, purple to lilac. Capture insects via mucilage on the entire surface of leaves and stems.

Monotypic family endemic to southwestern Western Australia (Albany), with a single species: Cephalotus follicularis (Albany pitcher plant). A pitcher plant with highly elaborate pitchers, unrelated to Nepenthes or Sarraceniaceae — a remarkable case of convergent evolution. One of the most famous examples of parallel evolution in carnivorous plants.

Family of carnivorous plants that capture insects via sticky leaves or rapid-closure traps. Includes Drosera (sundews, ~200 sp), Dionaea (Venus flytrap), and Aldrovanda (waterwheel plant). Distributed on all continents except Antarctica, with greatest diversity in Australia and South Africa. Inhabit bogs, heathlands, and oligotrophic environments with moist, nutrient-poor soils.

Monotypic family with a single species: Drosophyllum lusitanicum (dewy pine or Portuguese sundew), native to the Iberian Peninsula and Morocco. A notable exception among carnivorous plants: grows in dry, well-drained, alkaline soils — not in wet bogs. Its leaves produce large quantities of aromatic mucilage that attracts and traps insects. Plants can reach 1.5 m in height.

The largest family of carnivorous plants, with three genera and over 350 species: Pinguicula (butterworts, ~100 sp, sticky traps), Utricularia (bladderworts, ~215 sp, vacuum traps aquatic and terrestrial), and Genlisea (~30 sp, corkscrew traps). Cosmopolitan, adapted to a huge variety of habitats from arctic tundra to the tropics. Utricularia is the most species-diverse genus of carnivorous plants in the world.

Monotypic family (single genus: Nepenthes) of tropical carnivorous plants with pitchers that trap and digest prey. With over 170 species, it is the richest family of carnivorous plants. Native mainly to Southeast Asian tropics, with diversity centers in Borneo, Sumatra, and the Philippines. Many species are epiphytic or lianas of humid montane forests.

Small South African family with a single genus (Roridula) and two species: R. gorgonias and R. dentata. Although they produce sticky mucilage and capture insects, they technically do NOT digest them directly — they do not secrete digestive enzymes. Instead, they maintain a symbiotic relationship with bugs (Pameridea) that digest the prey and whose excrement is absorbed by the plant. They represent a unique case of "proto-carnivory" or indirect carnivory.

Family of carnivorous plants from the American continent with three pitcher-plant genera: Sarracenia (11 sp, North America), Darlingtonia (1 sp, cobra lily, California-Oregon), and Heliamphora (23 sp, South American tepuis). Modified leaves form pitchers that trap and digest insects. Inhabit mainly acidic bogs and high-mountain tepui formations.