| Family | Brassicaceae | 
| Scientific name | Turritis glabra L. | 
| Synonyms | Arabis glabra (L.) Bernhardi; Arabis glabra (L.) Bernhardi var. furcatipilis M. Hopkins; Arabis macrocarpa (Nuttall) Torrey; Arabis perfoliata Lamarck; Arabis pseudoturritis Boissier & Heldreich; Turritis dregeana Sonder; Turritis glabra L. var. lilacina O. E. Schulz; Turritis macrocarpa Nuttall; Turritis pseudoturritis (Boissier & Heldreich) Velenovsky | 
| Common name | (Japanese common name) hata-zao (ハタザオ, 旗竿 [meaning: flag pole]) | 
| (English common name) tower mustard, tower rockcress | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu, Okinawa | 
| (Other nations) Russia, China, Nepal, India, Pakistan, Kazakhstan, Tajikistan, Turkmenistan, Caucasus, Afghanistan, Iran, Turkey, Europe, Algeria, Morocco, Canada, USA | |
| Habitat | Field, forest edge | 
| Chromosomal number | 2n=12, 16, 32 | 
| Description | Plants electing 70-100cm tall. Leaves 3-14cm long. Flowers white petals 5-6mm long, flowering May to June. Winter annual plants. | 
| Reference | Turritis glabra L. | 
| Turritis glabra Linnaeus | |
| Method of using DNA episomes to suppress gene expression in plants (US Patent 20020148005) | |
| Method of producing and screening antibodies produced in transgenic plants (US Patent 20060075521) | 
| June 2007 at Hitachi Coastal Park | June 2007 at Hitachi Coastal Park | June 2007 at Hitachi Coastal Park | 
| June 2007 at Hitachi Coastal Park | June 2007 at Hitachi Coastal Park |