Question: Are Rebutia and Eucomis both genuses?

Context articles: Eucomis montana
Rebutia albopectinata
Rebutia
Eucomis comosa
Eucomis zambesiaca
Rebutia minuscula
Eucomis vandermerwei
Eucomis pallidiflora
Eucomis
Eucomis bicolor

Eucomis montana is a plant species in the genus "Eucomis" found in South Africa (KwaZulu-Natal and the Northern Provinces) and Swaziland.
 The Latin specific epithet "montana" refers to mountains or coming from mountains.
Rebutia albopectinata is a species of Rebutia from Bolivia.
Rebutia is a genus in the family Cactaceae, native to Bolivia and Argentina.
 They are generally small, colorful cacti, globular in form, which freely produce flowers that are relatively large in relation to the body.
 They have no distinctive ribs, but do have regularly arranged small tubercles.
 They are considered fairly easy to grow and they may produce large quantities of seeds that germinate freely around the parent plant.
Eucomis comosa (pineapple flower, pineapple lily, wine eucomis) is an ornamental plant in the Asparagaceae family of plants (subfamily Scilloideae).
 It is endemic to South Africa.
Eucomis zambesiaca is a bulbous plant native to southern Africa, from Zimbabwe through Malawi to the Limpopo Province of South Africa.
 One of the smaller species in the genus, it has a rosette of leaves about 45 cm across and white flowers in a spike to about 30 cm tall.
Rebutia minuscula is a species of cactus from northern Argentina.
 It is the type species of the genus "Rebutia".
Eucomis vandermerwei is a South African plant and a member of the Asparagus family (Asparagaceae, subfamily Scilloideae), and like other members of "Eucomis" is commonly known as Pineapple Lily for its resemblance to that plant.
 This species is one of the smallest in the genus—some 100 mm tall—and is native to the high-rainfall Steenkampsberg, 60 km north of Belfast in Mpumalanga.
 The dense rosette of leaves, either prostrate or ascending, is heavily blotched with purple, and leaf-edges are markedly crisped or wavy.
 The attractive burgundy flowers appear in midsummer (November–January).
Eucomis pallidiflora (giant pineapple lily) is a species of flowering plant in the family Asparagaceae, native to South Africa.
 It is a bulbous perennial growing to 45 - tall, with a basal rosette of strap-shaped leaves, bearing 45 - long racemes of greenish-white flowers in late summer.
Eucomis is a genus of flowering plants in the family Asparagaceae, subfamily Scilloideae, native to southern Africa.
 Most species of this genus are commonly referred to as pineapple flowers or pineapple lilies.
 They are bulbous perennials with basal rosettes of leaves with stout stems covered in star-shaped flowers with a tuft of green bracts at the top, superficially resembling a pineapple – hence the common names.
Eucomis bicolor, the variegated pineapple lily, is a species of flowering plant in the family Asparagaceae, native to Southern Africa (the Cape Provinces, Lesotho, KwaZulu-Natal, the Free State, and the Northern Provinces).
 It is a bulbous perennial growing to 30 - in height, with a basal rosette of wavy leaves 30 - long.
 In late summer it produces a stout stem bearing racemes of pale green, purple margined flowers with a terminal rosette of pale green leafy bracts.
 At close quarters it has an unpleasant smell.