Question: Which one has the most species, Titanopsis or Spathiphyllum?

full_context: Document 1: Lithops: Lithops is a genus of succulent plants in the ice plant family, Aizoaceae. Members of the genus are native to southern Africa. The name is derived from the Ancient Greek words λίθος ("lithos"), meaning "stone," and ὄψ ("ops"), meaning "face," referring to the stone-like appearance of the plants. They avoid being eaten by blending in with surrounding rocks and are often known as pebble plants or living stones. The formation of the name from the Greek "-ops" means that even a single plant is called a Lithops.
Document 2: Conophytum: Conophytum is a genus of South African and Namibian succulent plants that belong to the Aizoaceae family. The name is derived from the Latin “conus” (cone) and Greek “phytum” (plant). The plants are also known as knopies (buttons), waterblasies (water blisters), sphaeroids, conos, cone plants, dumplings, or button plants.
Document 3: Titanopsis: Titanopsis is a genus of about 10 species of succulent plants of the family Aizoaceae, indigenous to the arid regions of South Africa and Namibia.
Document 4: Monstera: Monstera is a genus of about 50 species of flowering plants in the arum family, Araceae, native to tropical regions of the Americas. The genus is named from the Latin word for "monstrous" or "abnormal", and refers to the unusual leaves with natural holes that members of the genus have.
Document 5: Dieffenbachia: Dieffenbachia is a genus of tropical flowering plants in the family Araceae. It is native to the New World Tropics from Mexico and the West Indies south to Argentina. Some species are widely cultivated as ornamental plants, especially as houseplants, and have become naturalized on a few tropical islands.
Document 6: Anacampseros albissima: Anacampseros albissima is a species of succulent plant native to the Karoo desert of South Africa.
Document 7: Spathiphyllum: Spathiphyllum is a genus of about 40 species of monocotyledonous flowering plants in the family Araceae, native to tropical regions of the Americas and southeastern Asia. Certain species of "Spathiphyllum" are commonly known as Spath or peace lilies.
Document 8: Paphiopedilum: Paphiopedilum, often called the Venus slipper, is a genus of the Lady slipper orchid subfamily "Cypripedioideae" of the flowering plant family Orchidaceae. The genus comprises some 80 accepted taxa including several natural hybrids. The genus is native to Southeast Asia, the Indian Subcontinent, southern China, New Guinea and the Solomon and Bismarck Islands.
Document 9: Spathantheum: Spathantheum is a genus of flowering plants in the family Araceae. The genus contains two species, "Spathantheum fallax" and "Spathantheum orbignyanum". "Spathantheum" is believed to be closely related to "Spathicarpa". The genus is endemic to the Andes of Peru, Bolivia, and northern Argentina and is found growing in grasslands in rocky soil.
Document 10: Aloinopsis: Aloinopsis is a genus of ice plants from South Africa.
Document 11: Aglaonema: Aglaonema is a genus of flowering plants in the arum family, Araceae. They are native to tropical and subtropical regions of Asia and New Guinea. They are known commonly as Chinese evergreens.
Document 12: Delosperma: Delosperma ('delos'=evident, 'sperma'=seed) is a genus of around 100 species of succulent plants, formerly included in "Mesembryanthemum" in the family Aizoaceae. The family is common in southern and eastern Africa.
Document 13: Anacampseros: Anacampseros is a genus comprising about a hundred species of small perennial succulent plants native to Southern Africa. The botanical name "Anacampseros" is an ancient one for herbs supposed to restore lost love.
Document 14: Zantedeschia: Zantedeschia is a genus of 8 species of herbaceous, perennial, flowering plants in the family Araceae, native to southern Africa from South Africa north to Malawi. The genus has been introduced on all continents except Antarctica. Common names include arum lily for "Z. aethiopica" and calla and calla lily for "Z. elliottiana" and "Z. rehmannii", although members of the genus are neither true lilies of Liliaceae, true "Arums", or true "Callas" (related genera in Araceae). They are also often confused with "Anthurium". The colourful flowers and leaves of both species and cultivars are greatly valued and commonly grown as ornamental plants.
Document 15: Colocasia: Colocasia is a genus of flowering plants in the family Araceae, native to southeastern Asia and the Indian subcontinent. Some species are widely cultivated and naturalized in other tropical and subtropical regions. Common names include tarul, karkala ko ganu, elephant-ear, taro, cocoyam, dasheen, chembu, champadhumpa, shavige gadde, and eddoe. Elephant-ear and cocoyam are also used for some other large-leaved genera in the Araceae, notably "Xanthosoma" and "Caladium". The generic name is derived from the ancient Greek word "kolokasion", which in the Greek botanist Dioscorides (1st century AD) meant the edible roots of both "Colocasia esculenta" and "Nelumbo nucifera". It is thought that the edible roots of "Colocasia esculenta" have been cultivated in Asia for more than ten thousand years. The species "Colocasia esculenta" is an invasive species in wetlands along the American Gulf coast, where it threatens to displace native wetland plants.
ground_truth: Spathiphyllum