question: Is it true that both Howea and Bulbophyllum can be found in countries in the Northern Hemisphere?
answer: yes
context: Title: June
  Passage: June is the sixth month of the year in the Julian and Gregorian calendars and the second month to have the length of 30 days. June contains the summer solstice in the Northern Hemisphere, the day with the most daylight hours, and the winter solstice in the Southern Hemisphere, the day with the fewest daylight hours (excluding polar regions in both cases).  June in the Northern Hemisphere is the seasonal equivalent to December in the Southern Hemisphere and vice versa.  In the Northern hemisphere, the beginning of the traditional astronomical summer is 21 June (meteorological summer begins on 1 June).  In the Southern hemisphere, meteorological winter begins on 1 June.
  Title: Bulbophyllum
  Passage: Bulbophyllum is the largest genus in the orchid family Orchidaceae.  With more than 2,000 species, it is also one of the largest genera of flowering plants, exceeded only by "Astragalus".  This genus is abbreviated in the trade journals as Bulb.  It is found throughout most of the warmer parts of the world: Africa, southern Asia, Latin America, the West Indies, and various islands in the Indian and Pacific Oceans.
  Title: 2010 Northern Hemisphere summer heat waves
  Passage: The 2010 Northern Hemisphere summer heat waves included severe heat waves that impacted most of the United States, Kazakhstan, Mongolia, China, Hong Kong, North Africa and the European continent as a whole, along with parts of Canada, Russia, Indochina, South Korea and Japan during May, June, July, and August 2010.  The first phase of the global heatwaves was caused by a moderate El Niño event, which lasted from June 2009 to May 2010.  The first phase lasted only from April 2010 to June 2010, and caused only moderate above average temperatures in the areas affected.  But it also set new record high temperatures for most of the area affected, in the Northern Hemisphere.  The second phase (the main, and most devastating phase) was caused by a very strong La Niña event, which lasted from June 2010 to June 2011.  According to meteorologists, the 2010–11 La Niña event was one of the strongest La Niña events ever observed.  That same La Niña event also had devastating effects in the Eastern states of Australia.  The second phase lasted from June 2010 to October 2010, caused severe heat waves, and multiple record-breaking temperatures.  The heatwaves began on April 2010, when strong anticyclones began to develop, over most of the affected regions, in the Northern Hemisphere.  The heatwaves ended in October 2010, when the powerful anticyclones over most of the affected areas dissipated.
  Title: Buys Ballot's law
  Passage: In meteorology, Buys Ballot's law (] ) may be expressed as follows: In the Northern Hemisphere, if a person stands with his back to the wind, the atmospheric pressure is low to the left, high to the right.  This is because wind travels counterclockwise around low pressure zones in the Northern Hemisphere.  It is approximately true in the higher latitudes of the Northern Hemisphere, and is reversed in the Southern Hemisphere, but the angle between the pressure gradient force and wind is not a right angle in low latitudes.
  Title: Bulbophyllum reichenbachii
  Passage: Bulbophyllum reichenbachii is a species of orchid in the genus "Bulbophyllum", found in northern Burma.  The orchid grows on the trunks of trees, forming clumps.
  Title: Bulbophyllum abbrevilabium
  Passage: Bulbophyllum abbrevilabium, also known as the Short Lipped Bulbophyllum, is a warm-growing species of orchid in the genus "Bulbophyllum".  It is found in the Southeast Asian countries Thailand, Malaysia and Vietnam.
  Title: Subtropical ridge
  Passage: The subtropical ridge, also known as the subtropical high or horse latitudes, is a significant belt of atmospheric high pressure situated around the latitudes of 30°N in the Northern Hemisphere and 30°S in the Southern Hemisphere.  It is the product of the global air circulation cell known as the Hadley Cell.  The subtropical ridge is characterized by mostly calm winds, which act to reduce air quality under its axis by causing fog overnight, and haze during daylight hours as a result of the stable atmosphere found near its location.  The air descending from the upper troposphere flows out from its center at surface level toward the upper and lower latitudes of each hemisphere, creating both the trade winds and the westerlies.  The subtropical ridge moves poleward during the summer, reaching its most northern latitude in early fall, before moving equatorward during the cold season.  The El Niño southern climate oscillation (ENSO) can displace the northern hemisphere subtropical ridge, with La Niñas allowing for a more northerly axis for the ridge, while El Niños show flatter, more southerly ridges.  The change of the ridge position during ENSO cycles changes the tracks of tropical cyclones that form around their equatorward and western peripheries.  As the subtropical ridge varies in position and strength, it can enhance or depress monsoon regimes around their low-latitude periphery.  The term "horse latitudes" refers to and is synonymous with the subtropical ridge or subtropical high.
  Title: Howea
  Passage: Howea is a genus of two palms, "H. belmoreana" and "H. forsteriana", both endemic to Lord Howe Island, Australia.  "H. forsteriana" in particular is commonly grown as an indoor plant in the Northern Hemisphere, and the two species form the mainstay of the island's palm seed industry and more importantly its trade in newly germinated seedlings.  The palms are also cultivated on Norfolk Island, where seeds are produced for export.
citations: Howea Bulbophyllum