Question: Which has more species, Pitcher plant or Iresine?
Context: Nepenthes robcantleyi, or Robert Cantley's pitcher plant, is a tropical pitcher plant endemic to the Philippine island of Mindanao.  It is closely allied to "N. truncata" and was once considered a dark, highland form of this species. " Nepenthes veitchii" from Borneo is also thought to be a close relative. 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. Wyeomyia smithii, the pitcher plant mosquito, is an inquiline mosquito that completes its pre-adult life cycle in the phytotelma — that is, the water contained by the purple pitcher plant, "Sarracenia purpurea".  In this microcommunity of bacteria, rotifers, protozoa, and midges, "W. smithii" is the top-level predator; its presence determines the bacterial species diversity within the pitcher.  It is not in any way a pest mosquito, neither biting nor approaching humans or livestock, although there are some populations in the southern US, such as that in the Apalachicola National Forest, that have been observed to take blood meals after laying an initial egg batch.  In fact, it is the only known mosquito to have both obligatory biting and non-biting populations in the same species. 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. 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. 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. 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. 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). Metriocnemus knabi, the pitcher plant midge, is an inquiline invertebrate found only in the phytotelma of the purple pitcher plant, "Sarracenia purpurea".  In this microcommunity of bacteria, rotifers, protozoa, and other dipteran larva like "Wyeomyia smithii", "M. knabi" specializes by feeding mostly on the carcasses of drowned insects captured by the plant that collect at the bottom of the pitcher.  It is found in the eastern United States, as far north as Maine and south to North Carolina. Iresine is a genus of flowering plants in the amaranth family, Amaranthaceae.  It contains 20 to 25 species, all of which are native to the American tropics.  The generic name is derived from the Greek word εριος ("erios"), meaning "wooly", referring to the trichome-covered flowers.  Bloodleaf is a common name for those species that have colored foliage, and these are often cultivated as ornamental plants.  Some species are additives to versions of the hallucinogenic drink Ayahuasca.
Answer: Iresine