Question: Are Pitcher plant and Viola both carnivorous plants?

Context articles: Sarracenia purpurea
Viola (plant)
Nepenthes attenboroughii
Man-eating tree
Heliamphora uncinata
Tarkiln Bayou Preserve State Park
The Carnivorous Plants
Pitcher plant
Meadowview Biological Research Station
Cephalotus

Sarracenia purpurea, commonly known as the purple pitcher plant, northern pitcher plant, turtle socks, or side-saddle flower, is a carnivorous plant in the family Sarraceniaceae.
is a genus of flowering plants in the violet family Violaceae.
 It is the largest genus in the family, containing between 525 and 600 species.
 Most species are found in the temperate Northern Hemisphere; however, some are also found in widely divergent areas such as Hawaii, Australasia, and the Andes.
Nepenthes attenboroughii ( or ), or Attenborough's pitcher plant, is a montane species of carnivorous pitcher plant of the genus "Nepenthes".
 It is named after the celebrated broadcaster and naturalist Sir David Attenborough, who is a keen enthusiast of the genus.
 The species is characterised by its large and distinctive bell-shaped lower and upper pitchers and narrow, upright lid.
 The type specimen of "N. attenboroughii" was collected on the summit of Mount Victoria, an ultramafic mountain in central Palawan, the Philippines.
Man-eating tree can refer to any of the various legendary carnivorous plants large enough to kill and consume a person or other large animal.
 The carnivorous plant with the largest known traps is probably Nepenthes rajah, which produces pitchers up to 41 cm tall with a volume up to 3.5 l .
 The pitcher of this species are designed to trap arthropods.
 However, the same bait may also attract rodents like the summit rat ("Rattus baluensis") and the Mountain treeshrew ("Tupaia montana").
 Only very rarely will the rodents fall into the large pitchers of this species.
 Other large carnivorous plants that have similar properties include Nepenthes robcantleyi and Nepenthes attenboroughi.
Heliamphora uncinata is a species of Marsh Pitcher Plant endemic to Venezuela.
 This species of carnivorous plant is known as a pitcher plant.
 Individuals use tube like leaves to trap insects that slip into the bottom.
 At the bottom of the "pitcher" there are digestive juices which slowly digest the prey item to give the plant additional nutrients.
 The pitchers of this species are around 25–35 cm long, and are 8–10 cm wide at the opening.
 The pitcher mouth is circular in shape and the back is raised to form the lid.
 It is known only from the type collection, which was made in a narrow canyon on Amurí-tepui.
 There it grows at an elevation of approximately 1850 m on sandstone cliff faces in shady conditions.
 It is also found in humus pockets and cracks at this location.
 The only other species in the genus known to have a similar growth habit is "H. exappendiculata".
 These two taxa also share a number of morphological features and appear to be closely related.
 These shared morphological features include: the shape of pitchers, the general growth pattern, and appearance of nectaries (nectar producing organs).
Tarkiln Bayou Preserve State Park is a 4290 acre preserve, a unit of Florida State Park located 10 mi southwest of Pensacola, in northwestern Florida.
 It is home to four species of endangered pitcher plants, as well as other rare and endangered plant species.
 The rare, carnivorous white–top pitcher plant is unique to the Gulf Coast and found only between the Apalachicola and Mississippi rivers.
 Almost 100 other rare plants and animals depend on the wet prairie habitat, including the alligator snapping turtle, sweet pitcher plant, and Chapman's butterwort.
 Tarkiln Bayou Preserve State Park is located in Escambia County about 1.5 mi south of the intersection of U.S. Hwy.
 98 and State Road 293.
The Carnivorous Plants is a major work on carnivorous plants by American botanist Francis Ernest Lloyd.
 It was first published in 1942 by the Chronica Botanica Company as the ninth volume of "A New Series of Plant Science Books".
 It was reprinted in 1976 by Dover Publications of New York and Constable of London.
 Although primarily dealing with plants, the book also briefly covers carnivorous fungi.
 The chapter describing the structure and functioning of "Utricularia" traps is particularly detailed.
 Lloyd's book was the most important scientific work on carnivorous plants since Charles Darwin's "Insectivorous Plants" of 1875.
Pitcher plants are several different carnivorous plants which have modified leaves known as pitfall traps—a prey-trapping mechanism featuring a deep cavity filled with digestive fluid liquid.
 The traps of what are considered to be "true" pitcher plants are created from modified leaves; however they are not simply folded into a tube, and the process is far more complex.
Meadowview Biological Research Station is a non-profit 501(c)(3) organization dedicated to preserving and restoring rare wetland plants, habitats and associated ecosystems on the coastal plain of Maryland and Virginia.
 It was created in 1995 with the specific goal or restoring the rare yellow pitcher plant ("Sarracenia flava") the purple pitcher plant ("Sarracenia purpurea"), and associate species to pitcher plant bogs or seepage wetlands in their historic ranges.
Cephalotus ( or ; Greek: "κεφαλή" "head", and "οὔς"/"ὠτός" "ear", to describe the head of the anthers) is a genus which contains one species, Cephalotus follicularis the Australian pitcher plant, a small carnivorous pitcher plant.
 The pit-fall traps of the modified leaves have inspired the common names for this plant, which include Albany pitcher plant, Western Australian pitcher plant, or fly-catcher plant.