Question: Which genus of plants contains a larger variety of species, Paulownia or Dendromecon?

Context paragraphs:
Dendromecon: Dendromecon, the tree poppy, is a genus of one or two species of shrubs to small trees, native to California and northern Baja California.

Heliamphora: The genus Heliamphora ( or ; Greek: "helos" "marsh" and "amphoreus" "amphora") contains 23 species of pitcher plants endemic to South America.  The species are collectively known as sun pitchers, based on the mistaken notion that the "heli" of "Heliamphora" is from the Greek "helios", meaning "sun".  In fact, the name derives from "helos", meaning marsh, so a more accurate translation of their scientific name would be marsh pitcher plants.  Species in the genus "Heliamphora" are carnivorous plants that consist of a modified leaf form that is fused into a tubular shape.  They have evolved mechanisms to attract, trap, and kill insects; and control the amount of water in the pitcher.  At least one species ("H. tatei") produces its own proteolytic enzymes that allows it to digest its prey without the help of symbiotic bacteria.

Poison dart frog: Poison dart frog (also known as dart-poison frog, poison frog or formerly known as poison arrow frog) is the common name of a group of frogs in the family Dendrobatidae which are native to tropical Central and South America.  These species are diurnal and often have brightly colored bodies.  This bright coloration is correlated with the toxicity of the species, making them aposematic.  Some species of the family Dendrobatidae exhibit extremely bright coloration along with high toxicity, while others have cryptic coloration with minimal to no amount of observed toxicity.  The species that have great toxicity derive this from their diet of ants, mites and termites.  Other species however, that exhibit cryptic coloration and low to no amounts of toxicity, eat a much larger variety of prey.  Many species of this family are threatened due to human infrastructure encroaching the places they inhabit.

Paulownia: Paulownia is a genus of six to 17 species (depending on taxonomic authority) of flowering plants in the family Paulowniaceae, related to and sometimes included in the Scrophulariaceae.  They are present in much of China, south to northern Laos and Vietnam and are long cultivated elsewhere in eastern Asia, notably in Japan and Korea.  They are deciduous trees 12 – tall, with large, heart-shaped leaves 15–40 cm across, arranged in opposite pairs on the stem.  The flowers are produced in early spring on panicles 10–30 cm long, with a tubular purple corolla resembling a foxglove flower.  The fruit is a dry capsule, containing thousands of minute seeds.

Zeltnera: Zeltnera is a genus of flowering plants in the gentian family.  It was erected in 2004 when the genus "Centaurium" (the centauries) was split.  Genetic analysis revealed that "Centaurium" was polyphyletic, made up of plants that could be grouped into four clades. Each became a genus.  "Centaurium" remained, but it is now limited to the Eurasian species.  The Mexican species now belong to genus "Gyrandra", and the Mediterranean and Australian plants are in genus "Schenkia".  The new name "Zeltnera" was given to this genus, which contains most of the North American centauries.  There are about 25 species.

Pseudechis: The genus Pseudechis contains the group of elapids commonly referred to as the black snakes.  These snakes are found in every Australian state with the exception of Tasmania and some species are found in Papua New Guinea.  They inhabit a variety of habitat types, from arid areas to swampland.  All species are dangerous ("Pseudechis" signifying "like a viper", Greek "echis") and can inflict a potentially lethal bite.  Most snakes in this genus reach about 2 metres and vary in colour.  Some species are brown, where others are black.  The most recognisable and widespread species in the genus are the red-bellied black snake ("Pseudechis porphyriacus") and the Mulga snake (king brown) ("Pseudechis australis").  These snakes feed on lizards, frogs, birds, small mammals and even other snakes.  All species lay eggs, except the red-bellied black snake.  The genus "Pailsus" is a synonym of "Pseudechis", and more work is needed to understand species limits among the smaller species of the group.

Sphagnum: Sphagnum is a genus of approximately 380 accepted species of mosses, commonly known as peat moss.  Accumulations of "Sphagnum" can store water, since both living and dead plants can hold large quantities of water inside their cells; plants may hold 16–26 times as much water as their dry weight, depending on the species.  The empty cells help retain water in drier conditions.  Hence, as sphagnum moss grows, it can slowly spread into drier conditions, forming larger mires, both raised bogs and blanket bogs.  These peat accumulations then provide habitat for a wide array of peatland plants, including sedges and ericaceous shrubs, as well as orchids and carnivorous plants.  "Sphagnum" and the peat formed from it do not decay readily because of the phenolic compounds embedded in the moss's cell walls.  In addition, bogs, like all wetlands, develop anaerobic soil conditions, which produces slower anaerobic decay rather than aerobic microbial action.  Peat moss can also acidify its surroundings by taking up cations, such as calcium and magnesium, and releasing hydrogen ions.  Under the right conditions, peat can accumulate to a depth of many meters.  Different species of "Sphagnum" have different tolerance limits for flooding and pH, so any one peatland may have a number of different "Sphagnum" species.

Aneurophyton: Aneurophyton is a genus of extinct vascular plants that belong to the Aneurophytales, a class of progymnosperms.  The genus is primarily known from records of two well-known species found in mostly Middle Devonian and Upper Devonian (late Eifelian to Famennian) outcrops in Belgium, China (West Junggar), Germany, and the United States (New York).  Some uncertain species within the genus are also recorded from Middle Devonian outcrops in Kazakhstan, Russia (Timan and Siberia), and the Ukraine.  While a number of species have been described in the paleobotanical literature, the genus likely only contains two well-circumscribed species, "A. germanicum" and "A. doui", and possibly a third species, "A. olnense", from Fammenian outcrops in Belgium.  If the ages of the Early Devonian (Emsian) records of "A. germanicum" reported from Siberia are confirmed, these would constitute the oldest records of this genus.

Jatropha: Jatropha is a genus of flowering plants in the spurge family, Euphorbiaceae.  The name is derived from the Greek words ἰατρός ("iatros"), meaning "physician", and τροφή ("trophe"), meaning "nutrition", hence the common name physic nut.  Another common name is nettlespurge.  It contains approximately 170 species of succulent plants, shrubs and trees (some are deciduous, like "Jatropha curcas").  Most of these are native to the Americas, with 66 species found in the Old World.  Plants produce separate male and female flowers.  As with many members of the family Euphorbiaceae, "Jatropha" contains compounds that are highly toxic.  Jatropha species have traditionally been used in basketmaking, tanning and dye production.  In the 2000s, one species, "Jatropha curcas", generated interest as an oil crop for biodiesel production.

Leptofoenus: Leptofoenus is a genus of wasp in the family Pteromalidae, the type genus subfamily Leptofoeninae found in South, Central, and southern North America.  The genus contains five living species and one extinct species known from early Miocene Burdigalian stage Dominican amber deposits on the island of Hispaniola.  With body sizes ranging from 11 - "Leptofoenus" species are larger than nearly all other species in Pteromalidae.  The genus bears a notable resemblance to the wasp families Pelecinidae, Gasteruptiidae, and Stephanidae.

Supporting paragraphs: Paulownia Dendromecon
Answer: Paulownia