Predict what lathyrus odoratus, scientific name for sweet pea plant told you about one of its characteristics

Sweet pea (Lathyrus odoratus) is a flowering plant in the genus Lathyrus in the family Fabaceae (legumes), native to Sicily, southern Italy and the Aegean Islands. It is an annual climbing plant, growing to a height of 1-2 meters (between 39 and 78 inches), where suitable support is available.