Question: What are Ercilla and Hoodia?

full_context: Document 1: Hoodia gordonii: Hoodia gordonii, also known as Bushman's hat, is a leafless spiny succulent plant supposed to have therapeutic properties in folk medicine. It grows naturally in Botswana, South Africa and Namibia. The species became internationally known and threatened by collectors, after a marketing campaign falsely claimed that it was an appetite suppressant for weight loss. The flowers smell like rotten meat and are pollinated mainly by flies. The indigenous San people (Bushmen) of the Namib desert call this plant ǁhoba (pronounced – the initial sound is a lateral click) – and the Afrikaans name ghaap is used to refer to all species of "Hoodia".
Document 2: Erica lusitanica: Erica lusitanica is a species of flowering plant in the family Ericaceae, known by the common names Portuguese heath and Spanish heath. It is native to Spain, Portugal and southwestern France. It is named for Lusitania, a historical region encompassing most of modern Portugal and parts of western Spain.
Document 3: Fockea edulis: Fockea edulis is a species of plant in the Apocynaceae family that is native to South Africa and Namibia. A common name is Hottentot bread due to the milky, somewhat sweetish flavour of the edible root which is sometimes gathered from the wild for local use. The plant's latex is said to be poisonous. In Afrikaans the plant is called Bergbaroe, Bergkambroo, Kambaroo, Kambroo, Kambro, or Hotnotswaatlemoen. In Khoi it is called !Koo, !Ku, or !Kuu. A semi-deciduous perennial caudiciform with fat, twisted grey roots, it grows in warmer drier areas, dry savannah and rockery. In the wild, the caudex is partially or totally buried and tends to grow faster this way up to 60 cm in diameter. Fockeas are dioecious, so a male plant and a female plant are needed to produce seeds. The flowers are whitish-green, not very showy but lightly scented, small (0.6-1.5 cm wide) vygie-like flowers surrounded by a large, thick, spider-like calyx. The flowers are pollinated by fruit flies. The plant produces grey-greenish pods. The thin vine branches may reach a length of up to 4 meters, and climb on any type of available support. The leaves are green, entire and oblong. Although it shows decreased activity in the January – April period, it never goes into complete dormancy and always carries some leaves. Plants cannot tolerate more than occasional light frosts with temperatures dropping as low as -2°C. This species is of easy cultivation and hardy when kept reasonably dry and watered only enough to keep the tuber from shriveling.
Document 4: Rhodohypoxis: Rhodohypoxis is a small genus of tuberous flowering plants in the family Hypoxidaceae, native to southern Africa (South Africa, Lesotho, Swaziland). The small flowers, no more than 15 cm high, are constructed so that their centres are not visible. Some species are in cultivation.
Document 5: Stapeliae: The genera of plants within the tribe Stapeliae are all to varying degrees stem succulents. Many of the species resemble cacti, though are not closely related, as an example of convergent evolution. The stems are often angular, mostly four-angled in cross-section, but in some species there are six or more, with some species of "Hoodia" having more than thirty angles. In size they vary from less than 2.5 cm/1" in length to over 2 m/6" tall. The leaves are in most species reduced to rudiments, sometimes hardened and thorn-like, arranged on bumps or tubercles on the angles. Some species, however, still have recognisable leaves, most notably the Indian species "Frerea indica", and some members of "Tridentea". Stapeliads are most abundant in warm, dry climates. In Africa, there are two separate regions where Stapeliads have most diversified: northeast Africa, and Southern Africa. Several species are endemic to the small island of Socotra off the Horn of Africa. The Arabian Peninsula, and most specifically the country of Yemen, contain another concentration of species. Several more are found in the drier parts of Pakistan, Afghanistan, India, Nepal, and Myanmar. A single species, "Caralluma europea" is found in Europe, in the very southern part of the Iberian peninsula. Stapeliads are often regarded as a climax group within the family because of their often structurally complex flowers. Certain aspects of these reproductive parts mirror the pollination systems in the Orchid family and represent a case of parallel evolution though both groups are quite unrelated and have developed similar, though not identical means to achieve the ultimate goal of pollination and therefore reproduction. Most stapeliads use flies as pollinators, that are attracted to odours resembling dung or rotting meat, emanating from the flowers. Many of the flowers also bear some physical resemblance to rotting animal carcasses, leading to their popular name of Carrion Flowers. However, not all stapeliads smell bad, or attract flies. Some species use beetles, bees, wasps, butterflies or moths as pollinators. Stapeliad flowers range in size from mere millimetres in species of "Echidnopsis" and "Pseudolithos" to those of "Stapelia gigantea" that can reach 40 cm/16" in diameter, and are some the largest of flowers to be found on any species of succulent.
Document 6: Hoodia: Hoodia (known locally as "ghaap" or "bobbejaanghaap") is a genus of flowering plants in the family Apocynaceae, under the subfamily Asclepiadoideae, native to Southern Africa.
Document 7: Erica: Erica is a genus of roughly 860 species of flowering plants in the family Ericaceae. The English common names "heath" and "heather" are shared by some closely related genera of similar appearance. The genus "Calluna" was formerly included in "Erica" – it differs in having even smaller scale-leaves (less than 2–3 mm long), and the flower corolla consisting of separate petals. "Erica" is sometimes referred to as "winter (or spring) heather" to distinguish it from "Calluna" "summer (or autumn) heather".
Document 8: Pachypodium: Pachypodium is a genus of succulent spine-bearing trees and shrubs, native to Madagascar and Africa. It belongs to the dogbane family, Apocynaceae. "Pachypodium" comes from a Latin form from Greek "pachus" (thick) and "podion" (foot) (or Gk podos, root form of pous, foot), hence meaning "thick-footed".
Document 9: Eccremocarpus: Eccremocarpus (syn. "Calampelis" D.Don) is a genus of five species of flowering plants in the family Bignoniaceae, native to western South America in Chile, western Argentina, and Peru. The species are evergreen semi-woody vines growing to 1-7 m tall.
Document 10: Phylica: Phylica is a genus of plants in the family Rhamnaceae. It contains about 150 species, the majority of which are restricted to South Africa, where they form part of the "fynbos ". A few species occur in other parts of southern Africa, and on islands including Madagascar, the Mascarene Islands, Île Amsterdam, Saint Helena, Tristan da Cunha, and Gough Island.
Document 11: Ercilla, Chile: Ercilla is a Chilean town and commune in the Malleco Province, Araucanía Region. Its name is a tribute to Alonso de Ercilla, who wrote "La Araucana".
Document 12: Hoodia macrantha: Hoodia macrantha is a succulent plant native to Namibia and the Cape Province of South Africa. It is regarded by some sources as a synonym of the accepted name for the plant, "Hoodia currorii" subsp. "currorii".
Document 13: Ercilla (plant): Ercilla is a genus of plants in the Phytolaccaceae family containing two species, "Ercilla spicata" and "Ercila syncarpellata".
Document 14: Ercilla (magazine): Ercilla is a biweekly news magazine published in Santiago, Chile. It is one of the oldest news magazines in the country. Its title is a reference to Alonso de Ercilla who wrote the first epic poem in Spanish in Chile.
Document 15: Gomphocarpus fruticosus: Gomphocarpus fruticosus (syn. "Asclepias fruticosa") is a species of milkweed native to South Africa. It is also common in New Zealand where it is the main host of the monarch butterfly. The plant's tissues contain sufficient cardenolides that consumption of significant quantities of the plant's leaves, stems, or fruit may lead to death in livestock and humans.
ground_truth: genus of plants