Question: Which of the following is native to the Himalayas and is commonly known as the Chinese hat plant: Pistacia or Holmskioldia?
Context: Holmskioldia is a genus of flowering plants in the mint family, Lamiaceae.  It is native to the Himalayas (India, Pakistan, Nepal, Bhutan, Bangladesh, Myanmar) but widely cultivated as an ornamental and naturalized in many places (Southeast Asia, New Caledonia, Hawaii, Mexico, West Indies, Venezuela, etc.) It contains only one known species, Holmskioldia sanguinea, commonly called the Chinese hat plant, cup-and-saucer-plant or mandarin's hat. Pistacia is a genus of flowering plants in the cashew family, Anacardiaceae.  It contains 10 to 20 species that are native to Africa and Eurasia from the Canary Islands, all of Africa, and southern Europe, warm and semidesert areas across Asia, and North America from Mexico to warm and semidesert United States, such as Texas or California. The Asian conical hat, commonly known as an Asian rice hat, coolie hat (in the UK), or farmer's hat, is a simple style of conical hat originating in East, South, and Southeast Asia, particularly Bangladesh, Bhutan, China, Cambodia, India, Indonesia, Japan, Korea, Malaysia, Myanmar, Philippines, parts of Russian Manchuria and Vietnam. Saussurea gossypiphora commonly known as snowball plant (Hindi:कस्तूरी कमल, kastūrī kamal; Nepali:कपासे फूल, kapāsē phūl) is a perennial herbaceous plant.  It is reputed to have medicinal properties according to traditional Chinese medicine.  It is native to the Himalayas, and found at altitudes of 4300-5600 m. Pistacia atlantica is a species of pistachio tree known by the English common name Mt. Atlas mastic tree and as the Persian turpentine tree.  In Iran it is called "baneh".  In the Canary Islands it is known as Almacigo, and in Arabic, it is called بطم ("buṭm" or "buṭum").  In southern Iran, in Bandar-Abbas in Hormozgān Province it is called "kasoudang" and in Bushehr it is called "kolkhong".  In Turkey it is commonly known as "melengiç".  In Kurdish the tree is called darwan or daraban, and the seed is called qezwan ( ). Bryophyllum daigremontianum, commonly called devil’s backbone, mother-of-thousands, alligator plant, or Mexican hat plant is a succulent plant native to Madagascar.  Like other members of its genus "Bryophyllum", it is able to propagate vegetatively from plantlets that develop on its phylloclade margins.  All parts of the plant contain a very toxic steroid known as daigremontianin. Calyptraea, commonly known as the "Chinese hat snails" is a genus of sea snails, marine gastropod mollusks in the family Calyptraeidae, a family which contains the slipper snails or slipper limpets, cup-and-saucer snails, and Chinese hat snails. Pistacia terebinthus, known commonly as terebinth and turpentine tree, is a species of "Pistacia", native to the Canary Islands, and the Mediterranean region from the western regions of Morocco, and Portugal to Greece, western and southeast Turkey.  In the eastern shores of the Mediterranean sea – Syria, Lebanon and Israel – a similar species, "Pistacia palaestina", fills the same ecological niche as this species and is also known as terebinth. Zegalerus is a genus of small to medium-sized sea snails, marine gastropod molluscs in the family Calyptraeidae, commonly known as slipper snails, cup-and-saucer shells, and Chinese hat shells. Oroxindin is a flavone, a type of phenolic chemical compound.  It is a wogonoside, more accurately a wogonin glucuronide isolated from "Oroxylum indicum" (Bignoniaceae), "Bacopa monnieri" (Plantaginaceae) and "Holmskioldia sanguinea" (Chinese hat plant, Verbenaceae).
Answer: Holmskioldia