Question: Which plant genus has a larger number of species, Rhapis and Cimicifuga?
Context: Palinurus barbarae is a species of spiny lobster described in 2006, which was found by fishermen working the waters above the Walters Shoals, a series of submerged mountains 700 km south of Madagascar.  The animal weighs 4 kg and reaches up to 40 cm long excluding the long antennae, and is similar to "P. delagoae", found off South Africa, from which it may be differentiated by a number of characters including the larger number of spines.  There are fears that the species, which lives in an area outside any country's jurisdiction, may now be exploited, or that it has already been brought near to extinction by overfishing. Progomphus tennesseni is a species of dragonfly in the family Gomphidae.  It is endemic to the Dominican Republic.  Specimens of this species were first collected by Dr. Oliver Flint of the Smithsonian Institution near a waterfall of a tributary of the Rio Yaqui del Norte, west of Jarabaco.  Daigle (1996) recognized this species from a large number of "Progomphus" collected, who distinguished its differences from a larger number of "Progomphus serenus" specimens.  Its natural habitats are subtropical or tropical moist lowland forests and rivers.  It is threatened by habitat loss.  The species is named after Ken Tennessen, a well-known researcher of New World Odonata. Actaea arizonica is a species of flowering plant in the buttercup family known by the common name Arizona bugbane.  It is endemic to Arizona in the United States, where it occurs in Coconino, Gila, and Yavapai Counties.  Like some other species in genus "Actaea", this plant was formerly included in the genus "Cimicifuga". Banksia sessilis, commonly known as parrot bush, is a species of shrub or tree in the plant genus "Banksia" in the family Proteaceae.  It had been known as Dryandra sessilis until 2007, when the genus "Dryandra" was sunk into "Banksia".  The Noongar peoples know the plant as Budjan or Butyak.  Widespread throughout southwest Western Australia, it is found on sandy soils over laterite or limestone, often as an understorey plant in open forest, woodland or shrubland.  Encountered as a shrub or small tree up to 6 m in height, it has prickly dark green leaves and dome-shaped cream-yellow flowerheads.  Flowering from winter through to late spring, it provides a key source of food—both the nectar and the insects it attracts—for honeyeaters in the cooler months, and species diversity is reduced in areas where there is little or no parrot bush occurring.  Several species of honeyeater, some species of native bee, and the European honey bee seek out and consume the nectar, while the long-billed black cockatoo and Australian ringneck eat the seed.  The life cycle of "Banksia sessilis" is adapted to regular bushfires.  Killed by fire and regenerating by seed afterwards, each shrub generally produces many flowerheads and a massive amount of seed.  It can recolonise disturbed areas, and may grow in thickets. Acanthobothrium soberoni is a species of parasitic onchobothriid tapeworm first found in the whiptail stingray, "Dasyatis brevis", in the Gulf of California.  It is relatively long and with a larger number of segments, albeit with fewer testes and an asymmetrical ovary.  It also differs from its cogenerate species by its hook size and length of its hook prongs; cirrus sac size; the position of its genital pore, the number of testes columns that are anterior to the cirrus sac; as well as a number of postvaginal testes. The western clawed frog ("Xenopus tropicalis") is a species of frog in the Pipidae family, also known as tropical clawed frog.  It is the only species in the "Xenopus" genus to have a diploid genome.  Its genome has been sequenced, making it a significant model organism for genetics that complements the related species "Xenopus laevis" (the African clawed frog), a widely used vertebrate model for developmental biology.  "X. tropicalis" also has a number of advantages over "X. laevis" in research, such as a much shorter generation time (<5 months), smaller size (4 – body length), and a larger number of eggs per spawn. Saturation pollination is a pollination technique for agricultural crops in areas dominated by non-crop plant species that are preferred by pollinators.  The technique involves keeping a larger number of bee colonies than normally maintained for honey production so as to exhaust the preferred plants and ensure visitation of the crop plants by the bees.  The technique is applied in areas that are normally avoided by beekeepers because of poor honey yields. Rhapis is a genus of about 10 species of small palms native to southeastern Asia from southern Japan and southern China south to Sumatra.  The species are commonly known as Lady Palms. Hydrophis donaldi, or the rough-scaled sea snake is a unique species of sea snake from Australia's Gulf of Carpentaria first described for the scientific literature in 2012.  It is a yellow to brown, striped snake that reaches up to a meter in length.  It gives live birth and is venomous enough to be dangerous to humans.  The primary distinguishing trait of the rough-scaled sea snake is the presence of a single spine on every scale covering the snake's body.  The snake's tough, spiny scales may protect it from being buffeted against the rocks of its stony estuary habitats by the action of the waves and currents.  Other less spectacular traits distinguishing it from other members of the genus "Hydrophis" include the lack of a groove running through the scales underlying its abdomen, a larger and rounder skull, differing numbers of scales around the circumference of different bodily regions, and a larger number of stripes than many sea snakes have. Cimicifuga (bugbane or cohosh) was a genus of between 12-18 species of flowering plants belonging to the family Ranunculaceae, native to temperate regions of the Northern Hemisphere.
Answer: Cimicifuga