Question: Which is a member of the Orchid family, Arachnis or Sumac?

full_context: Document 1: Phalaenopsis: Phalaenopsis , known as moth orchids, abbreviated Phal in the horticultural trade, is an orchid genus of approximately 60 species. "Phalaenopsis" is one of the most popular orchids in the trade, through the development of many artificial hybrids. It is native to southern China, Taiwan, the Indian Subcontinent, Southeast Asia (Thailand, Philippines, Malaysia, Indonesia, etc.), New Guinea, the Bismarck Archipelago, and Queensland.
Document 2: Caladenia: Caladenia, commonly known as spider orchids, is a genus of 350 species of plants in the orchid family, Orchidaceae. Spider orchids are terrestrial herbs with a single hairy leaf and a hairy stem. The labellum is fringed or toothed in most species and there are small projections called calli on the labellum. The flowers have adaptations to attract particular species of insects for pollination. The genus is divided into three groups on the basis of flower shape, broadly, spider orchids, zebra orchids and cowslip orchids, although other common names are often used. Although they occur in other countries, most are Australian and 136 species occur in Western Australia, making it the most species-rich orchid genus in that state.
Document 3: Zanthoxylum: Zanthoxylum (including genus "Fagara") is a genus of about 250 species of deciduous and evergreen trees and shrubs in the citrus or rue family, Rutaceae, native to warm temperate and subtropical areas worldwide. Several of the species have yellow heartwood, to which their generic name alludes.
Document 4: Angraecum: The genus Angraecum, abbreviated as Angcm in horticultural trade, common name Angrek (Indonesian and Malay) or Comet Orchid, contains about 220 species.
Document 5: Kusum oil: Kusum oil is a type of oil extracted from the seed of the Kusum tree ("Schleichera oleosa"). The plant, which is also commonly known as Ceylon oak, lac tree, or Macassar oiltree, belongs to the Sapindaceae family. The schleichera family is named after J. C. Schleicher, a Swiss botanist, and the species name means "oily" or "rich in oil." The tree is native to India and Pakistan, but is also found in some parts of Southeast Asia.
Document 6: Sumac: Sumac (Assyrian Neo-Aramaic: ܣܘܼܡܵܩܵܐ‎ "summāqāʾ" ("red, red shift, turning red"), Arabic: سمّاق‎ ‎ "summāq"; , or ; also spelled sumach, sumaq) is any one of about 35 species of flowering plants in the genus Rhus and related genera, in the family Anacardiaceae. The dried and powdered fruits are used as a spice in Middle Eastern cuisine. Sumacs grow in subtropical and temperate regions throughout the world, especially in East Asia, Africa and North America.
Document 7: 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 8: Arachis: Arachis is a genus of about 70 species of annual and perennial flowering plants in the pea family (Fabaceae), native to South America, and was recently assigned to the informal monophyletic "Pterocarpus" clade of the Dalbergieae. At least one species, the peanut ("Arachis hypogaea"), is a major food crop species of global importance; some of the other species are cultivated for food to a small extent in South America. Other species such as "A. pintoi" are cultivated worldwide as forage and soil conditioner plants, with the leaves providing high-protein feed for grazing livestock and a nitrogen source in agroforestry and permaculture systems.
Document 9: Rheum ribes: Rheum ribes, the Syrian rhubarb or currant-fruited rhubarb, rhubarb-currant, warted-leaved rhubarb, warty-leaved rhubarb, rhubarb of Babilonia is an edible wild rhubarb species in the genus "Rheum". It grows between 1000 and 4000 m on dunite rocks, among stones and slopes, and is distributed in the temperate and subtropical regions of the world, chiefly in Western Asia (Turkey, Syria, Lebanon, Iraq, Iran, Azerbaijan, Armenia) to Afghanistan and Pakistan. The Syrian rhubarb a partially commercial vegetable collected from the nature in Eastern and Southern Anatolia, Northern Iraq and partly Northwestern Iran in early spring. "Rheum ribes" is considered as a valuable medicinal species in herbal medicine.
Document 10: Skimmia: Skimmia is a genus of four species of evergreen shrubs and small trees in the Rue family, Rutaceae, all native to warm temperate regions of Asia. The leaves are clustered at the ends of the shoots, simple, lanceolate, 6-21 cm long and 2-5 cm broad, with a smooth margin. The flowers are in dense panicle clusters, each flower small, 6-15 mm diameter, with 4-7 petals. The fruit is red to black, 6-12 mm diameter, a fleshy drupe containing a single seed. All parts of the plant have a pungent aroma when crushed. The botanical name, "Skimmia", is a Latinization of "shikimi" (シキミ, 樒), which is the Japanese name for "Illicium religiosum" as well as an element in "miyama shikimi" (ミヤマシキミ, 深山樒), the Japanese name for "Skimmia japonica".
Document 11: Sarcopoterium: Sarcopoterium is a genus of flowering plants in the rose family. The genus is synonymous to "Poterium". The sole species within this genus, Sarcopoterium spinosum, is common to the southeast Mediterranean region and Middle East. It is a perennial bush with small flowers in inflorescence. "Sarcopoterium spinosum" flowers in February to April and its fruits mature in autumn, then fall to earth to germinate with the rain water.
Document 12: Dischidia major: Dischidia major, the Malayan urn vine, is an unusual plant. "Dischidia" is a genus of some 80 species of trailing, twining or scandent, succulent epiphytes found throughout the tropics of Asia (New Guinea, Moluccas, Philippines, India, tropical Australia, Hong Kong, Taiwan) through to the western Pacific. They carry modified leaves, offering accommodation to ants, including those of the family Dolichoderinae, and in return gain some sustenance from increased carbon dioxide and nitrogen levels, and a degree of protection from noxious animals and plants. This mutualism trait, known as myrmecophily, is widespread across the plant world and clearly carries considerable benefits for both ants and plant.
Document 13: Senegalia senegal: Senegalia senegal (until recently known as "Acacia senegal") is a small thorny deciduous tree from the genus "Senegalia", which is known by several common names, including Gum acacia, Gum arabic tree, Senegal gum and Sudan gum arabic. In parts of India, it is known as Kher or Khor. It is native to semi-desert regions of Sub-Saharan Africa, as well as Oman, Pakistan, west coastal India. It grows to a height of 5-12 m, with a trunk up to 30 cm in diameter. "S. senegal" is the source of the world's highest quality gum arabic, known locally as hashab gum in contrast to the related, but inferior, gum arabic from Red acacia or talah gum.
Document 14: Rhus chirindensis: Rhus chirindensis is a medium-sized, semi-deciduous, trifoliate Southern African dioecious tree of up to 10 m tall, rarely 20 m, often multi-stemmed, occurring along the coastal belt from the Cape, through KwaZulu/Natal, Swaziland, Zimbabwe and Mozambique as far north as Tanzania, and growing in a wide variety of habitats such as open woodlands, in forests, along forest margins, in the open, among rocks and on mountain slopes. It was named by Swynnerton from a specimen collected by him near the Chirinda Forest in the Chipinge District of Southern Rhodesia. This is one of more than a hundred southern African species in the genus. It is commonly known as red currant because of a fancied resemblance of the fruit to that of the European redcurrant.
Document 15: Arachnis (plant): The genus Arachnis, abbreviated as Arach in horticultural trade, (scorpion orchid,) is a member of the Orchid family (Orchidaceae), consisting of more than 20 species native to China, India, Southeast Asia, Indonesia, the Philippines, New Guinea, and the Solomon Islands.
ground_truth: Arachnis