Turning to examine the nearby ivy, Ivory couldn't resist a grin. Her name's sake. Well, at least her nick-name's sake. Observing the characteristics of it and the way it was growing on the window panes as she tugged on her gloves, the brunette paused for a moment before speaking. Wouldn't it mean if it was growing on the window panes that it was attempting to get closer to the sunlight? Or was it more of a defense mechanism to keep the larger body of the plant shielded?

Turning around she peered into the waiting darkness of the greenhouse and turned a questioning glance back to the creeping vine in question. If the question was being asked, logically the growth and vitality of the plant required lesser amounts of sunlight. Raising her hand, Ivory voiced her thoughts. "Maybe the plants for study today are low-light foliage plants." Her eye concentrating on how the leaves reached out to the Professor, she continued. "A magical cousin of the mundane Ivy plant perhaps, or cousin to the Devil's Snare." Unless the ivy was merely to obscure the light for something that required more darkness... Casting a small glance backwards again, she tried not to think of all the dangerous plant life that thrived in the dark.