Question: Are both Alpinia and Xerophyllum genuses of plants?

full_context: Document 1: Caulophyllum: Caulophyllum is a small genus of perennial herbs in the family Berberidaceae. It is native to eastern Asia and eastern North America. These plants are distinctive spring wildflowers, which grow in moist, rich woodland, it is known for its large triple-compound leaf, and large blue, berry-like fruits. Unlike many spring wildflowers, it is not an ephemeral plant and persists throughout much of the summer. Common names for plants in this genus include Blue Cohosh, Squaw Root, and Papoose Root. As hinted at by its common names, this plant is well known as an alternative medicine for inducing childbirth and menstrual flow; it is also considered a poisonous plant.
Document 2: Alpinia: Alpinia is a genus of flowering plants in the ginger family, Zingiberaceae. It is named for Prospero Alpini, a 17th-century Italian botanist who specialized in exotic plants. Species are native to Asia, Australia, and the Pacific Islands, where they occur in tropical and subtropical climates. Several species are cultivated as ornamental plants. Species of the genus are known generally as shell ginger.
Document 3: Alpinia purpurata: Alpinia purpurata, red ginger, also called ostrich plume and pink cone ginger, are native Malaysian plants with showy flowers on long brightly colored red bracts. They look like the bloom, but the true flower is the small white flower on top.
Document 4: Eriophyllum: Eriophyllum, commonly known as the woolly sunflower, is a North American genus of plants in the sunflower family. The genus is native to western North America (USA, Canada, northwestern Mexico), with a concentration of narrow endemics in California.
Document 5: Kaempferia: Kaempferia is a genus of plants in the ginger family. It is native to China, India, and Southeast Asia (Thailand, Malaysia, Indonesia, Philippines, etc.).
Document 6: Xerophyllum tenax: Xerophyllum tenax is a North American species of plants in the corn lily family. It is known by several common names, including bear grass, squaw grass, soap grass, quip-quip, and Indian basket grass.
Document 7: Anaphalis: Anaphalis is a genus of herbaceous and woody flowering plants within the Asteraceae family, whose members are commonly known by the name pearl or pearly everlasting. There are around 110 species with the vast majority being native to central and southern Asia. There is one species native to North America that is fairly well known and popular in cultivation, namely the western pearly everlasting ("Anaphalis margaritacea").
Document 8: Renealmia alpinia: Renealmia alpinia is a flowering plant species native to the Americas, where it grows from southern Mexico through much of South America, though not in the Southern Cone. It can also be found on several Caribbean islands.
Document 9: Kaempferia rotunda: Kaempferia rotunda is a plant species in the ginger family. It is native to China (Guangdong, Guangxi, Hainan, Taiwan, Yunnan), India, Nepal, Assam, Bangladesh, Indochina, and widely cultivated elsewhere. It is reportedly naturalized in Java, Malaysia and Costa Rica.
Document 10: Xerophyllum (plant): Xerophyllum is a genus of perennial plants from the family Melanthiaceae. The genus is native to North America.
Document 11: Xylothamia: Xylothamia, the desert goldenrods, is a genus of flowering plants in the daisy family, Asteraceae. Until 2003, it was held to contain nine species of shrubs native to deserts of Mexico and the southwestern United States. However, it seems to contain at least two groups. Four species are related to "Gundlachia" and may be moved to that genus. The relationships of the other five species is not quite as clear. All nine species do belong in the subtribe Solidagininae.
Document 12: Giardino Botanico Alpinia: The Giardino Botanico Alpinia (4 hectares) is a botanical garden specializing in alpine plants, located at 800 m altitude above Stresa on Lake Maggiore, Province of Verbano-Cusio-Ossola, Piedmont, Italy. It can be reached via the Lido di Carciano - Alpino - Mottarone cable car, and is open daily in the warmer months.
Document 13: Xerophyllum asphodeloides: Xerophyllum asphodeloides is a North American species of flowering plants in the Melanthiaceae known by the common names turkey beard, eastern turkeybeard, beartongue, grass-leaved helonias, and mountain asphodel. It is native to the eastern United States, where it occurs in the southern Appalachian Mountains from Virginia to Alabama, and also in the Pine Barrens of New Jersey.
Document 14: Alpinia galanga: Alpinia galanga, (also "Languas galanga"), a plant in the ginger family, is an herb used in cooking, especially in Indonesian and Thai cuisines. It is one of four plants known as galangal and is differentiated from the others with the common name greater galangal (or simply Thai galangal). The galangals are also called blue ginger or Thai ginger.
Document 15: Astelia alpina: Astelia alpina called pineapple grass, silver astelia, or perching lily is a commonly found species in alpine and subalpine areas of Tasmania and the Australian Alps. It is a perennial herb that typically dominates its environment by growing in dense clusters, called mats, in alpine bogs. There are two subspecies: "Astelia alpina" var. "novae hollandiae" from New South Wales and Victoria and "Astelia alpina" var. "alpina" endemic to Tasmania. Both subspecies appear very similar to each other. The species was originally described by Robert Brown.
ground_truth: yes