Which genus contains more species: Columnea or Olneya?
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Columnea Columnea is a genus of ca. 200 species of epiphytic herbs and shrubs in the flowering plant family Gesneriaceae, native to tropical America and the Caribbean. The tubular or oddly shaped flowers are usually large and brightly colored – usually red, yellow, or orange – sometimes resembling a fish in shape. A common name is flying goldfish plants (see also the related "Nematanthus") due to the unusual flower shape.
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Olneya Olneya tesota is a perennial flowering tree of the Fabaceae family, legumes (peas, beans, etc.), which is commonly known as ironwood or desert ironwood. It is the only species in the monotypic genus Olneya. This tree is part of the western Sonoran Desert complex in the Southwestern United States, which includes flora such as palo verde, saguaro, ocotillo, brittlebush, creosote bush, and mesquite.
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Oligeria Oligeria is a genus of moths in the family Lymantriidae.
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Olivancillaria Olivancillaria is a genus of sea snails, marine gastropod mollusks in the family Olividae.
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Boisea Boisea is the least speciose genus of the soapberry bug subfamily. Members of this genus are found in North America, India, and Africa. Unlike other serinethine genera, the distribution of "Boisea" is very patchy; it is speculated that its highly vicariant range is relictual of what was previously a much vaster, continuous range. The most well-known species of this genus are the North American boxelder bugs (western "Boisea rubrolineata" and eastern "Boisea trivittata") and African "Boisea fulcrata". The US species mainly feed on the seeds of Maple trees and are occasional nuisance pests around homes.
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Stylidium Stylidium (also known as triggerplants or trigger plants) is a genus of dicotyledonous plants that belong to the family Stylidiaceae. The genus name "Stylidium" is derived from the Greek "στύλος" or "stylos" (column or pillar), which refers to the distinctive reproductive structure that its flowers possess. Pollination is achieved through the use of the sensitive "trigger", which comprises the male and female reproductive organs fused into a floral column that snaps forward quickly in response to touch, harmlessly covering the insect in pollen. Most of the approximately 300 species are only found in Australia, making it the fifth largest genus in that country. Triggerplants are considered to be protocarnivorous or carnivorous because the glandular trichomes that cover the scape and flower can trap, kill, and digest small insects with protease enzymes produced by the plant.
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Stenella (fungus) Stenella is a genus of anamorphic fungi in the family Mycosphaerellaceae. The widespread genus contains about 155 species.
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Galanthus elwesii Galanthus elwesii (Elwes's snowdrop, greater snowdrop) is one of a number of species of the genus "Galanthus", herbaceous, perennial, bulbous plants belonging to the family Amaryllidaceae. It is a native of the Caucasus.
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Eulima columnaria Eulima columnaria is a species of sea snail, a marine gastropod mollusk in the family Eulimidae. The species is one of multiple known species to exist within the genus, "Eulima".
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Columnea orientandina Columnea orientandina is a plant species from Ecuador. It has leaves which are mostly green with a red coloured tip.
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Oligobuninae Oligobuninae is an extinct subfamily of the family Mustelidae.
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Colletia Colletia is a genus of flowering plants in the family Rhamnaceae, with 15 to 17 species of spiny shrubs. All species of this genus are native to southern South America. They are non-legume nitrogen fixers.
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Castilla (plant) Castilla (sometimes incorrectly spelled "Castilloa") is a genus of 3 species of large trees in the flowering plant family Moraceae. The genus is native to Central and South America.
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Columnaris Columnaris (also referred to as cottonmouth) is a symptom of disease in fish which results from an infection caused by the Gram-negative, aerobic, rod-shaped bacterium "Flavobacterium columnare". It was previously known as "Bacillus columnaris, Chondrococcus columnaris, Cytophaga columnaris" and "Flexibacter columnaris". The bacteria are ubiquitous in fresh water, and cultured fish reared in ponds or raceways are the primary concern – with disease most prevalent in air temperatures above 12–14 °C. It is often mistaken for a fungal infection. The disease is highly contagious and the outcome is often fatal. It is not zoonotic.
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Columna (gastropod) Columna is a genus of air-breathing tropical land snails, terrestrial pulmonate gastropod mollusks in the family Achatinidae.
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Omoea Omoea is a genus of flowering plants from the orchid family, Orchidaceae. It includes two known species, both native to Southeast Asia.
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Rhodostemonodaphne Rhodostemonodaphne is a genus of flowering plants in the family Lauraceae. It is a neotropical genus consisting of approximately 41 species occurring in Central America and northern South America. This genus has many species that are valued for timber. The classification of the genus is unclear since the species in the genus fall into a well-supported but unresolved clade that also includes species with unisexual flowers currently placed in the genera "Endlicheria" and part of "Ocotea".
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Ochanostachys Ochanostachys is a genus of plant in family Olacaceae. It contains the following species (but this list may be incomplete):
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Elodea Elodea is a genus of 6 species of aquatic plants often called the waterweeds described as a genus in 1803. "Elodea" is native to North and South America and is also widely used as aquarium vegetation. It lives in fresh water.
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Almaleea Almaleea is a genus of perennial shrubs from the legume family Fabaceae native to Australia.
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Oliganthes Oliganthes is a genus of flowering plants in the evil tribe within the daisy family.
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Credneria Credneria (Zenker 1833) is an extinct genus in the family Salicaceae or Platanaceae of broad-leaf trees similar to extinct "Platanus" species that appeared during the Cretaceous. Its foliage is preserved in sandstone and less often in siltstone. The leaves are typically obovate with a pinnate-actinodromous venation and distinct suprabasal veins.