Question: Are Cattleya and Leucocoryne of the same genus of flowers?

Context articles: Cattleya cernua
Cattleya purpurata
Cattleya schroederae
Leucocoryne
Cattleya warscewiczii
Cattleya aclandiae
Cattleya
Cattleya walkeriana
Cattleya elongata
Cattleya nobilior

Cattleya cernua, commonly known as the Nodding Sophronitis, is a species of orchid occurring from Brazil to northeastern Argentina.
 It was the type species of the genus "Sophronitis" until the genus was made synonymous with "Cattleya".
 Twenty plants of "C. cernua" have received a total of 22 AOS awards.
 The described flowers range from 1.9 cm to 3.2 cm horizontal spread and from 2.0 cm to 3.0 cm vertical spread.
Cattleya purpurata, known in the past as Laelia purpurata and Sophronitis purpurata, is native to Brazil where it is very popular among orchid growers.
 It is an epiphyte that is found in the canopy of tall trees near coastal areas, in the Brazilian states of Rio Grande do Sul, Santa Catarina and São Paulo.
 The orchid favors bright light and cool to warm conditions and is relative easy to cultive.
 C. purpurata has been used extensively as a parent in hybridizing with Cattleyas. Cattleya purpurata blooms from late spring to fall with three to five flowers on a spike.
 The flowers are long-lasting and fragrant.
Cattleya schroederae is a species of orchid.
 C. schroederae is named after Baroness Schroeder, wife of Sir John Schroder, see .
 It is a Colombian unifoliate Cattleya species.
 Flowers are to 9" (22.5 cm) across, strongly fragrant.
 C. shroederae blooms in spring from a sheath that has formed before the winter dormancy.
 As it blooms around Easter in Northern hemisphere, it is often referred to as "easter orchid", a name it shares with Cattleya mossiae.
Leucocoryne (Glory-of-the-sun) is a genus of bulbous perennials in the family Amaryllidaceae.
 The foliage of all species is long and narrow and has an onion-like scent.
 The blue, white or lilac flowers are held in umbels.
Cattleya warscewiczii (The "Warscewicz's Cattley's orchid"), a labiate "Cattleya", is a species of orchid.
 It was first collected by Józef Warszewicz in Colombia in 1848-49 and formally described by Heinrich Gustav Reichenbach in 1855.
 "C. warscewiczii" exhibits a typical Cattleya sympodial habit.
 Pseudobulbs are 8-16" (20-40 cm) long, unifoliate, cylindrical or cigar-shaped, grooved.
 Flowers are 7-11" (17.5-27.5 cm) across, largest in the genus, showy, fragrant.
 In culture the flowering is in summer on that year`s spring growth.
 Strong light and good air movement are required.
Cattleya aclandiae ("Lady Ackland's cattleya") is a species of orchid from the genus "Cattleya", named in honor of Lady Lydia Elizabeth Ackland, wife of Sir Thomas Dyke Acland, 10th Baronet who was the first European to grow the plant successfully.
 The illustration of the plant which accompanied its first description was based on a drawing by Lady Ackland .
 The genus was named in honour of William Cattley, a prominent British merchant and horticulturist.
Cattleya is a genus of orchids from Costa Rica south to Argentina.
 The genus is abbreviated C in trade journals.
Cattleya walkeriana (Walker's Cattleya) is a species of orchid.
 It differs from most species of "Cattleya" by having inflorescences which arise from the rhizome instead of from the apex of the pseudobulb .
 In its native habitat (Brazilian Central Plateau) it grows as either an epiphyte or a lithophyte, sometimes in full sun .
 Pseudobulbs are relatively short, bulbous or fusiform, with one or two ovate leaves at the apex.
 Inflorescence is one- or few-flowered, about 8" (20 cm) tall.
 Flowers are 4-5" (9-12 cm) across.
Cattleya elongata, the Cattleya with the Elongated Stalk, is an orchid species in the genus "Cattleya" endemic to the campo rupestre vegetation in northeastern Brazil.
Cattleya nobilior (literally "the More Noble Cattleya", referring to the flowers which are larger than those of "C. walkeriana", the other rhizanthoid "Cattleya", of which it was originally considered a variety) is a species of orchid.
 The rhizanthoid "Cattleya"s differ from the other species of "Cattleya" by having inflorescences which arise directly from the rhizome, instead of from the apex of the pseudobulb.
 The diploid chromosome number of "C. nobilior" has been determined as 2"n" = 42, which contrasts with the value of 2"n" = 40 for "C. walkeriana".