Question: Which of these is in the African violet family, Maclura or Petrocosmea?

full_context: Document 1: Petrophytum cinerascens: Petrophytum cinerascens (orth. var. "Petrophyton cinerascens") is a rare species of flowering plant in the rose family known by the common names halfshrub rockmat and Chelan rockmat. It is endemic to the state of Washington in the United States, where it occurs in just a few locations along the Columbia River in Chelan and Douglas Counties.
Document 2: Streptocarpus rexii: Streptocarpus rexii is a South African plant in the "Gloxinia" and African Violet family of Gesneriaceae, and occurring widely from the southern Cape along the coastal hills, mountains, wooded ravines and valleys, and moist forests of the east coast, through Natal as far north as the Eastern Transvaal, up to an altitude of about 900 m. This genus of epiphytes and lithophytes, of about 130 species, is mainly African and Mascarene, with four vagrant species in Asia. "Streptocarpus", as do other Old World Gesneriaceae, is unusual in that it displays anisocotylous or unequal growth, i.e. one cotyledon continues to grow after germination.
Document 3: Petrophytum caespitosum: Petrophytum caespitosum (orth. var. Petrophyton caespitosum) is a species of flowering plant in the rose family known by the common name mat rock spiraea.
Document 4: Malvaceae: Malvaceae, or the mallows, is a family of flowering plants estimated to contain 244 genera with 4225 known species. Well-known members of this family include okra, cotton, cacao and durian. The largest genera in terms of number of species include "Hibiscus" (300 species), "Sterculia" (250 species), "Dombeya" (250 species), "Pavonia" (200 species) and "Sida" (200 species).
Document 5: Musaceae: Musaceae is a family of flowering plants composed of three genera with ca 91 known species, placed in the order Zingiberales. The family is native to the tropics of Africa and Asia. The plants have a large herbaceous growth habit with leaves with overlapping basal sheaths that form a pseudostem making some members appear to be woody trees. In most treatments, the family has three genera, "Musella", "Musa" and "Ensete". Cultivated bananas are commercially important members of the family, and many others are grown as ornamental plants.
Document 6: Mucuna: Mucuna is a genus of around 100 accepted species of climbing lianas (vines) and shrubs of the family Fabaceae and typically found in tropical woodlands.
Document 7: Moringa oleifera: Moringa oleifera is the most widely cultivated species of the genus "Moringa", which is the only genus in the family Moringaceae. English common names include: moringa, drumstick tree (from the appearance of the long, slender, triangular seed-pods), horseradish tree (from the taste of the roots, which resembles horseradish), ben oil tree, or benzoil tree (from the oil which is derived from the seeds). It is a fast-growing, drought-resistant tree, native to the southern foothills of the Himalayas in northwestern India, and widely cultivated in tropical and subtropical areas where its young seed pods and leaves are used as vegetables. It can also be used for water purification and hand washing, and is sometimes used in herbal medicine.
Document 8: Physochlaina: Physochlaina is a small genus of herbaceous perennial plants belonging to the nightshade family, Solanaceae, found principally in the north-western provinces of China (and regions adjoining these in the Himalaya and Central Asia) although one species occurs in Western Asia, while another is found as far east as those regions of Siberia abutting the eastern borders of Mongolia and also not only in Mongolia itself, but also the Chinese autonomous region of Inner Mongolia. The genus is a valuable one, since its species are not only of considerable medicinal value, being rich in tropane alkaloids, but also of ornamental value, three species having been grown for the purpose, although hitherto infrequently outside botanical gardens. Furthermore, the genus contains a species ("P. physaloides" - recorded in older literature under the synonyms "Hyoscyamus physaloides" and "Scopolia physaloides") formerly used as an entheogen in Siberia.
Document 9: Maclura: Maclura is a genus of flowering plants in the mulberry family, Moraceae. It includes the inedible Osage orange, which is used as mosquito repellent and grown throughout the United States as a hedging plant.
Document 10: Petrophytum: Petrophytum (orth. var. Petrophyton) is a small genus of plants in the rose family known as the rock spiraeas or rockmats. These are low mat-forming shrubs which send up erect stems bearing spike inflorescences of flowers. The brushy flowers are white and have many stamens and hairy, thready pistils. Rockmats are native to western North America.
Document 11: Petrocosmea: Petrocosmea is a genus of the family Gesneriaceae, the African violet family. Most of the species within this genus are endemic to high-altitude areas in Western China, although some are native to other parts of Asia. It is a rosette forming genus that generally grows on wet mossy rocks or forests.
Document 12: Maurandya: Maurandya is a genus of flowering plants in the plantain family, Plantaginaceae, native to Mexico and the south west United States (from California to central Texas). They sprawl or climb by means of twining leaf stalks. One of the four species, "Maurandya barclayana", is widely cultivated as an ornamental plant.
Document 13: Mora (plant): Mora is a genus of large trees in the subfamily Caesalpinioideae of the legume family Fabaceae, (or in some classifications the family Caesalpinaceae of the order Fabales). There are seven to ten species, all native to lowland rainforests in northern South America, southern Central America and the southern Caribbean islands. These are large, heavily buttressed rainforest trees up to 130 feet (40 meters) in height (to 200 feet (61 meters) in the case of M. excelsa ). The genus is particularly noteworthy for the exceptional size of its beans, which are commonly acknowledged to be the largest known dicot seeds, in the instance of M megistosperma being up to seven inches (18 cm) in length, six inches (15 cm ) in breadth and three inches (8 cm)in thickness, and a weight of up to 2.2 pounds (1000 grams). The beans of Mora spp. are edible if boiled, and are also the source of a red dyestuff. The species M. excelsa is one of the few rainforest trees to grow in pure stands.
Document 14: Melaleuca: Melaleuca is a genus of nearly 300 species of plants in the myrtle family, Myrtaceae, commonly known as paperbarks, honey-myrtles or tea-trees (although the last name is also applied to species of "Leptospermum"). They range in size from small shrubs that rarely grow to more than 1 m (3 ft) high, to trees up to 35 m (100 ft). Their flowers generally occur in groups, forming a “head” or “spike” resembling a brush used for cleaning bottles, containing up to 80 individual flowers. They are superficially like "Banksia" species, which also have their flowers in a spike, but the structures of individual flowers in the two genera are very different.
Document 15: Sinningia muscicola: Sinningia muscicola, also known as Sinningia sp. "Rio das Pedras", is a tuberous member of the flowering plant family Gesneriaceae. The plants produce small, bright lavender flowers. Cultural requirements are similar to African Violets except that "S. speciosa" generally requires more humid environment.
ground_truth: Petrocosmea