Merremia tuberosa, Ipomoea tuberosa, Operculina tuberosa

Glabrous climber with tuberous roots and yellow flowers producing fruits that when dry are often used in floral arrangements. Leaves divided into five to seven narrow lobes. The flowers are yellow, followed by a smooth round capsule, surrounded by five petal-like sepals. Native to Asia; naturalized and cultivated in Hawaii. The seed of the large woodrose must be nicked well before it will grow. The plant can take little or much watering and much abuse. The vine will flower the second and subsequent years.

Similar plants:

• Merremia dissecta, Ipomoea sinuata, Convolvulus dissectus (Alamo Vine, White Convolvulus )
• Merremia gemella, Convolvulus gemellus, Ipomoea gemella (Woodrose)
• Merremia umbellata, Convolvulus umbellatus, Ipomoea polyanthes (Yellow Merremia, Yellow Wood Rose)
• Calonyction aculeatum, Ipomoea alba (Giant moonflower)
• Ipomoea abrupta, Convolvulus abruptus (Bush Potato, Bush Yam)
• Ipomoea arborescens (Tree Morning Glory, Nahuatl, Ozote, Palo Blanco)
• Ipomoea batatas (Sweet Potato Vine, Camote, Boniato)
• Ipomoea batatas Pink Frost (Potato Vine Pink Frost)
• Ipomoea cairica (Cairo Morning glory, Railroad-creeper, Mile-a-minute)
• Ipomoea carnea (Silver Morning Glory, Bush Morning Glory)