Question: Which one consists of more species, Drosera or Zygopetalum?
Context: Drosera burmannii, the tropical sundew, is a small, compact species in the carnivorous plant genus "Drosera".  Its natural geographical range includes Australia, India, China, Japan, and southeast Asia.  It normally spans only 2 cm in diameter.  It is one of the fastest trapping sundews as well, and its leaves can curl around an insect in only a few seconds, compared to the minutes or hours it takes other sundews to surround their prey.  In nature, "D. burmannii" is an annual, but in cultivation, when grown indoors during the cold months, it can live for many years.  Since "D. burmannii" is an annual, it produces large amounts of seed.  "Drosera burrmannii" has been considered a powerful rubefacient in Hindu medicine. Drosera broomensis is a small, perennial carnivorous plant in the genus "Drosera" that is endemic to Western Australia.  Its leaves are arranged in a small, leafy rosette, from which one to four inflorescences emerge.  It produces white flowers in February and March.  "D. broomensis" grows in sandy soils to the north and northeast of Broome in the Kimberley region.  It was first described by Allen Lowrie in 1996, though earlier specimens from as early as 1891 had been collected.  The specific epithet "broomensis" refers to the region in which it grows.  It is closely related to "Drosera petiolaris" and differs from other related species by its glabrous inflorescence. Drosera stenopetala is an insectivorous, rosette-forming perennial sub-alpine or alpine herb.  The specific epithet means "with narrow petals", which is somewhat misleading given that the petals of this plant are fairly wide.  A species of sundew, it is unique within its genus in being endemic to New Zealand.  It is one of New Zealand's two alpine species of "Drosera", the other being "Drosera arcturi".  Characteristic features include involute (inwardly curved) petioles and upright leaves.  Its range extends from the Ruahine and Tararua Ranges in the north down the Southern Alps to Stewart Island.  It is also found on the Auckland Islands and Campbell Island. Drosera zeyheri is a species in the carnivorous plant genus "Drosera" that is endemic to the Cape Provinces of South Africa.  Some botanists treat this species to be a form of "D. cistiflora".  It differs from typical "D. cistiflora" specimens by being smaller, sometimes having cauline leaves on the short stems with white, pink, or red flowers.  Botanist Fernando Rivadavia has said that he believes of all the forms and varieties in the "D. cistiflora" complex, "D. zeyheri" could possibly merit distinction at the species rank.  He found it easy to distinguish it from "D. cistiflora" by its mostly stemless habit, though it often does present one to three leaves on the flower scape.  "Drosera zeyheri" was first described by Terence Macleane Salter in a 1940 volume of the "Journal of South African Botany". Drosera darwinensis is a perennial carnivorous plant in the genus "Drosera" that is endemic to the Northern Territory.  Its leaves are arranged in a rosette with one rosette emerging from the root stock.  It produces pink or white flowers from December to April.  "Drosera darwinensis" grows in clayey sand from Palmerston to Berry Springs south of Darwin and east to Humpty Doo.  It was first described by Allen Lowrie in 1996; the type specimen was collected 0.9 km south of Temple Avenue in Palmerston on 8 April 1990.  The specific epithet "darwinensis" refers to region where this plant is found in abundance.  It is closely related to "D. brevicornis", but differs from that species by its shorter inflorescence (5–15 cm long in "D. darwinensis" and 30–40 cm long in "D. brevicornis"). Drosera magnifica is a species of sundew endemic to Pico Padre Ângelo (1500–1530 m asl) in eastern Minas Gerais in southeastern Brazil, where it grows among sandstone outcrops in herbaceous and shrubby vegetation.  It is one of the three largest species of "Drosera" - the other two being "D. regia" from South Africa and "D. gigantea" from Australia - and was discovered in 2015 through images which appeared on the social network Facebook.  It is the largest New World sundew, and it is closely related to "Drosera graminifolia" and "Drosera spiralis".  According to the IUCN Red List categories and criteria, it is considered Critically Endangered.  Brazil is home to some 30 species of "Drosera". Drosera gigantea, the giant sundew, is an erect perennial tuberous species in the carnivorous plant genus "Drosera" that is endemic to Western Australia.  It grows in sandy soils at the margins of swamps and near granite outcrops along the Western Australian coast from Albany north to just south of Geraldton.  "D. gigantea" produces small shield-shaped leaves along many lateral branches that look like a small tree.  Individual plants can grow up to 0.2 - tall.  Because of its tall, tree-like form, it is considered one of the largest "Drosera" species.  It is also easily cultivated and enjoys damp, humid conditions often provided in greenhouses.  White flowers emerge from August to November.  The red tubers of this species can grow to be 3.8 cm in diameter and may be a metre below ground. Zygopetalum is a genus of the orchid family (Orchidaceae) (subfamily Epidendroideae, tribe Maxillarieae, subtribe Zygopetalinae), consisting of fourteen currently recognized species. Drosera, commonly known as the sundews, is one of the largest genera of carnivorous plants, with at least 194 species.  These members of the family Droseraceae lure, capture, and digest insects using stalked mucilaginous glands covering their leaf surfaces.  The insects are used to supplement the poor mineral nutrition of the soil in which the plants grow.  Various species, which vary greatly in size and form, are native to every continent except Antarctica. Drosera arcturi is a perennial, insectivorous species of sub-alpine or alpine herb native to Australia and New Zealand.  It is one of New Zealand's two alpine species of sundew, the other being "Drosera stenopetala". The specific epithet, which translates as "of Arthur" from Latin, is a reference to Mount Arthur, Tasmania, the type locality of the species.
Answer: Drosera