Iris is a genus of about 260–300, species of flowering plants with showy flowers.
 It takes its name from the Greek word for a rainbow, which is also the name for the Greek goddess of the rainbow, Iris.
 Some authors state that the name refers to the wide variety of flower colors found among the many species.
 As well as being the scientific name, "iris" is also very widely used as a common name for all "Iris" species, as well as some belonging to other closely related genera.
 A common name for some species is 'flags', while the plants of the subgenus "Scorpiris" are widely known as 'junos', particularly in horticulture.
 It is a popular garden flower.
Ilex , or holly, is a genus of 400 to 600 species of flowering plants in the family Aquifoliaceae, and the only living genus in that family.
 The species are evergreen or deciduous trees, shrubs, and climbers from tropics to temperate zones worldwide.
Melianthus is a genus of flowering plants native to elevated grassland in South Africa.
 A common name for these plants is honey flower, which is also the English translation of the Latin name.
 This name also attaches to the species "M. comosus" and "M. major" that are found in cultivation.
Pterostylis aspera, commonly known as the rough shell orchid, is a species of orchid endemic to the south-west of Western Australia.
 As with similar greenhoods, the flowering plants differ from those which are not flowering.
 The non-flowering plants have a rosette of leaves flat on the ground but the flowering plants have a single flower with leaves on the flowering spike.
 In this common species, the flower is white with green and reddish-brown stripes and a short, straight labellum.
Amaryllis ( ) is the only genus in the subtribe Amaryllidinae (tribe Amaryllideae).
 It is a small genus of flowering bulbs, with two species.
 The better known of the two, "Amaryllis belladonna", is a native of the Western Cape region of South Africa, particularly the rocky southwest area between the Olifants River Valley to Knysna.
 For many years there was confusion among botanists over the generic names "Amaryllis" and "Hippeastrum", one result of which is that the common name "amaryllis" is mainly used for cultivars of the genus "Hippeastrum", widely sold in the winter months for their ability to bloom indoors.
 Plants of the genus "Amaryllis" are known as belladonna lily, Jersey lily, naked lady, amarillo, Easter lily in Southern Australia or, in South Africa, March lily due to its propensity to flower around March.
 This is one of numerous genera with the common name "lily" due to their flower shape and growth habit.
 However, they are only distantly related to the true lily, "Lilium".
Mertensia is a genus of flowering plants in the family Boraginaceae.
 They are perennial herbaceous plants with blue or sometimes white flowers that open from pink-tinged buds.
 Such a change in flower color is common in Boraginaceae and is caused by an increase of pH in the flower tissue.
 "Mertensia" is one of several plants that are commonly called "bluebell".
 In spite of their common name, the flowers are usually salverform (trumpet-shaped) rather than campanulate (bell-shaped).
Melianthus comosus (honey flower) is a species of flowering plant in the family Melianthaceae.
 It is native to the mostly dry regions of southern Africa.
 The attractive multi-stemmed shrubs are popular garden subjects.
 The Afrikaans name kruidjie-roer-my-nie ("herb-touch-me-not") alludes to the unpleasant smell that results from bruising of any part of the plant.
 The vegetative parts are very toxic, as with other "Melianthus" species, and extracts of the leaves and stem have anti-bacterial properties.
Melianthus major (giant honey flower or Kruidjie-roer-my-nie) is a species of flowering plant in the family Melianthaceae.
 It is an evergreen suckering shrub, endemic to South Africa and naturalised in India, Australia and New Zealand.
 It grows to 2 - tall by 1 - wide, with pinnate blue-green leaves 30 - long, which have a distinctive odour.
 Dark red, nectar-laden flower spikes, 30 - in length, appear in spring, followed by green pods.
 All parts of the plants are poisonous.
Gaillardia (common name blanket flower) is a genus of flowering plants in the sunflower family, Asteraceae, native to North and South America.
 It was named after an M. Gaillard de Charentonneau, an 18th-century French magistrate who was a patron of botany.
 The common name may refer to the resemblance of the inflorescence to the brightly patterned blankets made by Native Americans, or to the ability of wild taxa to blanket the ground with colonies.
 Many cultivars have been bred for ornamental use.
Honey flower is a common name for several plants and may refer to:

Question: Which of the flowering plants, Holly or Melianthus, has the common name of honey flower?
Answer: Melianthus