Witch Hazel is an animated cartoon character in the Warner Bros. "Looney Tunes" and "Merrie Melodies" series of cartoons.
 Disney, MGM, Famous Studios, and the comic book "Little Lulu" also had characters named "Witch Hazel", and Rembrandt Films had one named "Hazel Witch".
 This article is chiefly concerned with the character who appeared in Warner Bros. films.
Corylopsis pauciflora (buttercup witch hazel, winter hazel) is a species of flowering plant in the genus "Corylopsis" of the family Hamamelidaceae, native to Taiwan and Japan.
 It is a deciduous, spreading shrub growing to 1.5 m tall by 2.5 m wide.
 It produces masses of pale yellow flowers in pendent racemes in early spring, followed by leaves opening bronze and turning to rich green.
 It is cultivated in gardens and parks in temperate regions.
Parrotia persica (commonly called Persian ironwood) is a deciduous tree in the family Hamamelidaceae, closely related to the witch-hazel genus "Hamamelis".
 It is native to northern Iran and southern Azerbaijan (where it is called "Dəmirağac") and it is endemic in the Alborz mountains.
Toona ciliata is a forest tree in the mahogany family which grows throughout southern Asia from Afghanistan to Papua New Guinea and Australia.
 It is commonly known as the red cedar (a name shared by other trees), toon or toona (also applied to other members of the genus "Toona"), Australian redcedar, Burma cedar, Indian cedar, Moulmein cedar or the Queensland red cedar.
 It is also known as Indian mahogany.
Toona, commonly known as redcedar, toon (also spelled tun) or toona, is a genus in the mahogany family, Meliaceae, native from Afghanistan south to India, and east to North Korea, Papua New Guinea and eastern Australia.
 In older texts, the genus was often incorporated within a wider circumscription of the related genus "Cedrela", but that genus is now restricted to species from the Americas.
A-Haunting We Will Go is a 1966 theatrical "Looney Tunes" cartoon that was directed by Robert McKimson.
 As with the other Witch Hazel cartoons, June Foray voices Witch Hazel while Mel Blanc voices Speedy Gonzales, Daffy Duck, and Daffy's nephew.
Hamamelis mollis, also known as Chinese witch hazel, is a species of flowering plant in the witch hazel family Hamamelidaceae, native to central and eastern China, in Anhui, Guangxi, Hubei, Hunan, Jiangxi, Sichuan, and Zhejiang.
Bewitched Bunny is a Looney Tunes cartoon featuring Bugs Bunny directed by Chuck Jones and written by Michael Maltese.
 Jones created the character Witch Hazel who debuted in this cartoon.
 Witch Hazel later appeared in "Broom-Stick Bunny" (1956), "A Witch's Tangled Hare" (1959), and in "A-Haunting We Will Go" (1966).
 She also has a brief cameo appearance in "Transylvania 6-5000" (1963).
Corylopsis spicata (winter hazel) is a plant in the witch hazel family, Hamamelidaceae.
 It is a shrub with alternate, simple leaves, on thin, flexible, horizontal stems.
 The flowers are yellow, borne in late winter and early spring.
Parrotiopsis is a genus of deciduous shrub or small tree in the witch hazel family.

Question: Which genus of tree is closely-related to witch hazel, Toona or Parrotia?
Answer: Parrotia