Question: Are both Solandra and Petrophytum in a genus of plants in the rose family?

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: Browallia: Browallia is a genus of Solanaceae family. It is named after Johannes Browallius (1707–1755), also known as Johan Browall, a Swedish botanist, physician and bishop.
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: Pavonia lasiopetala: Pavonia lasiopetala is a species of flowering plant in the mallow family known by the common names that include Texas swamp-mallow, Wright pavonia, and rock rose. It is native to Texas in the United States and Coahuila and Nuevo León in Mexico.
Document 5: Solandra: Solandra is a genus of flowering plants in the nightshade family, Solanaceae. It is named after the Swedish naturalist Daniel C. Solander.
Document 6: Mandragora (genus): Mandragora is a plant genus belonging to the nightshade family (Solanaceae). Members of the genus are known as mandrakes. There are between three and five species in the genus. The one or two species found around the Mediterranean constitute the mandrake of ancient writers such as Dioscorides. Two or three further species are found eastwards into China. All are perennial herbaceous plants, with large tap-roots and leaves in the form of a rosette. Individual flowers are bell-shaped, whitish through to violet, and are followed by yellow or orange berries.
Document 7: Nicandra: Nicandra is a monotypic genus of flowering plants in the nightshade family containing the single species Nicandra physalodes. It is known by the common names apple-of-Peru and shoo-fly plant. It is thought originally to have been native to Peru (known elsewhere as an introduced species and sometimes as a weed) and is found nowadays as a ruderal species in tropical, subtropical and, to a lesser extent, temperate areas all over the world. It has also long been cultivated as an ornamental plant for its attractive flowers and curious fruits (the latter sometimes dried for use in floral design) and has been adopted into the traditional medicine of countries far-removed from its original home.
Document 8: Purshia stansburyana: Purshia stansburyana is a species of flowering plant in the rose family known by the common name Stansbury's cliffrose. It is native to the southwestern United States and northern Mexico, where it grows in woodlands, desert, and plateau habitat. It often grows anchored on cliffs and prefers rocky, granular soils, especially limestone.
Document 9: 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 10: Sandersonia: Sandersonia is a rhizomatous plant genus native to South Africa (the Cape Provinces, KwaZulu-Natal and the Northern Provinces) and Swaziland, part of the family "Colchicaceae". It has only one species, Sandersonia aurantiaca. It is also called Christmas bells, golden lily of the valley or Chinese lantern lily or Chinese lantern bulb "S. aurantiaca" is a perennial plant and a climber that can reach 30 inches in height. The flowers are yellow or orange.
Document 11: Lewisia pygmaea: Lewisia pygmaea is a species of flowering plant in the Montiaceae family known by the common name alpine lewisia and pygmy bitterroot. It is native to western North America from Alaska and Alberta to California and New Mexico, where it grows in many types of moist, rocky mountain habitat, such as gravel beds and sandy meadows. This is a highly variable species with a wide distribution, and it often hybridizes with other "Lewisia" species, making identification difficult. In general, this is a petite perennial herb growing from a taproot and caudex unit, and producing a basal rosette of several leaves 2 to 8 centimeters long. The leaves are narrow but thick and fleshy, blunt-tipped, and linear to lance-shaped. The inflorescence is usually made up of a few very short stems each bearing one or more flowers which appear to be sitting on or within the basal leaf rosette. Each flower has 5 to 9 white, pink or red petals which may or may not have dark veining or striping. The petals are 4 millimeters to 1 centimeter long.
Document 12: Solenopsis (plant): Solenopsis is a genus of plants in the Campanulaceae. It is native to the Mediterranean region from Portugal and the Canary Islands east to Turkey.
Document 13: Penstemon rupicola: Penstemon rupicola is a species of penstemon known by the common name cliff beardtongue. It is native to the west coast of the United States from Washington to the Klamath Mountains of far northern California, where it grows in rocky mountainous habitat. It is a clumpy, mat-forming subshrub growing no more than 14 centimeters high. The thick, waxy, oppositely arranged leaves are round or oval and up to 2 centimeters long. The showy wide-mouthed tubular flowers emerging from the mat may be nearly 4 centimeters in length and are shades of light purple to bright pink.
Document 14: Holmgrenanthe: Holmgrenanthe petrophila (rocklady, formerly "Maurandya petrophila") is a rare perennial desert plant in the plantain family (Plantaginaceae), and the sole species of the genus Holmgrenanthe. It forms low mats of branched stems growing from a woody base. The leaves have small spines along their edges. The solitary yellow flowers are tubular with five free lobes at the end, the upper two pointing backwards, the lower three projecting forwards. The species is known only from about ten locations, most in the Titus Canyon and the adjacent Fall Canyon, all within the Californian section of Death Valley National Park. It grows in limestone crevices on the canyon walls, often on the north face.
Document 15: Sutherlandia: Sutherlandia is a genus of flowering plants in the family Fabaceae.
ground_truth: no