Carnegiea gigantea (English spelling)

Japanese: Carnegiea gigantea（英語表記）Carnegieagigantea

...(2) In addition to the suppression of transpiration, many plants flower at night because the insects that mediate fertilization are only active at night. (3) In order to efficiently use scarce water, plants have shallow, wide-reaching roots that can absorb large amounts of water at once during the rainy season (for example, the saguaro ( Carnegiea gigantea ) in the Arizona desert has roots that extend over an area twice its height), and they root deeply into the ground to obtain groundwater during the dry season (for example, the mesquite (Prosopis glandulosa ) has roots that extend tens of meters underground). (4) They have well-developed water-storing tissues in preparation for the dry season (cacti and other succulents), etc.

From [Cactus]

...The main species of the cactus family are described below. First, this group includes the largest cactus, Carnegiea gigantea (Eng.) Br.et R. (English name: saguaro, record height 26.1m, edible fruit (illustration)), which is familiar from Western movies, as well as large species such as the Mexican Lemaireocereus and Pachycereus , the Central and South American Cereus ( C. peruvianus Mill. is a representative example, and its horticultural rock pillar (illustration) is also cultivated in the open in warm areas of Japan), and the Peruvian Neoraimondia . The Mexican Cephalocereus senilis (Haw.) Pfeiff. (illustration) and the South American Espostoa lanata Br.et R. are covered with dense white hairs and are called hairless bristles.

*Some of the terminology that mentions "Carnegiea gigantea" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…(2)蒸散の抑制もさることながら，受精を媒介する昆虫が夜間にしか活動しないため，夜に開花するものが多いこと。(3)乏しい水分を効率よく利用するため，雨季に大量の水を一時に吸収できるよう根を浅く広範囲にめぐらしたり(たとえばアリゾナ砂漠のサグアロCarnegiea giganteaは，丈の2倍の直径範囲に根をはっている)，乾季に地下水を得るため地中深く根を下ろしたり(たとえばメスキートProsopis glandulosaは地中数十mまで根を伸ばしている)すること。(4)乾季に備えての貯水組織がよく発達している(サボテンなど多肉植物)こと，などである。…

【サボテン】より

…以下，ハシラサボテン類のおもなものについて述べる。まず，この仲間には最大のサボテンで西部劇でなじみの深いベンケイチュウ(弁慶柱)Carnegiea gigantea (Eng.) Br.et R.(英名saguaro，最高記録26.1m，果実は食用になる（イラスト）)のほか，大型種としてメキシコのレマイレオケレウス属Lemaireocereus，パキケレウス属Pachycereus，中南米のケレウス属Cereus(キメンカク(鬼面角)C.peruvianus Mill.が代表的なもので，その園芸品種である岩石柱（イラスト）は日本においても暖地の露地で栽培されている)，ペルーのネオライモンディア属Neoraimondiaなどがある。メキシコのオキナマル(翁丸)Cephalocereus senilis (Haw.) Pfeiff.（イラスト）や南アメリカのオイラク(老楽)Espostoa lanata Br.et R.は白毛が密生し，毛柱類（けばしらるい）の名がある。…