Simplify the following text for a Grade 13 native English-speaking person.
Original: Sometimes called the sword lily , the most widely-used English common name for these plants is simply gladiolus ( plural gladioli , gladioluses or sometimes gladiolas ) .
Simplified: Sometimes called the sword lily , the most widely used English common name for these plants is simply gladiolus ( plural gladioli , gladioluses or sometimes gladiolas ) .