Which genus contais more species, Crowea or Zamioculcas?
Crowea
Crowea
Crowea is a genus of small evergreen shrubs in the plant family Rutaceae sometimes known as Waxflowers.
 There are three species and many subspecies and cultivars, all of which are popular as ornamentals because of their abundant, attractive flowers which often occur during autumn and winter.
 "Crowea" species are all endemic to Australia, where they occur in Victoria, New South Wales and Western Australia.
Zamioculcas
Zamioculcas (common name "Zanzibar Gem", "Zuzu Plant" or Emerald Palm) is a genus of flowering plant in the family Araceae, containing the single species Zamioculcas zamiifolia.
 It is a tropical perennial plant native to eastern Africa, from Kenya south to northeastern South Africa.
 Dutch nurseries started wide-scale commercial propagation of the plant around 1996.
Gonatopus (plant)
Gonatopus is a genus of flowering plants in the family Araceae, consisting of about five species.
 This genus is native to eastern and southeastern Africa and is closely related to the genus "Zamioculcas".
 The plant generally only produces one leaf from its tuber when in growth.
 In "G. boivinii", the leaf is tripinnate, and with its stalk can reach up to 1 m in height and 40 cm broad; the individual leaflets are up to 10 cm long and 3.5 cm broad; in "G. angustus", the leaf can reach 1.5 m tall.
 A spadix flower arises from the tuber during late spring.