garden stock; gillyflower
Refers to the flowering plant Matthiola incana, commonly called stock or gillyflower. The katakana form アラセイトウ is standard.
庭にアラセイトウが咲いている。
Garden stocks are blooming in the garden.
紫羅欄花 is the older kanji name for the garden stock flower, while ストック is the common katakana name used in everyday and florist speech.
Chinese violet cress
Katakana spelling is standard for this plant name; usually written in kana.
Hiragana spelling is also used, but katakana is more common for botanical names.
Ateji spelling; rarely used in modern writing.
Generally traced to Portuguese aleli, a name for the stock or wallflower. The spelling 紫羅欄花 is an ateji representation.