
1) American monthly magazine
Found on
https://www.crosswordclues.com/clue/houstonia
[magazine] Houstonia is a magazine about Houston and Greater Houston, Texas, United States. It is published by SagaCity Media. The magazine first appeared in newsstands in April 2013. As of February 2014 the magazine is distributed at over 700 locations in Greater Houston, including newsstands, retail outlets, and grocery stores. The Presid...
Found on
http://en.wikipedia.org/wiki/Houstonia_(magazine)
[plant] Houstonia (Bluet) is a genus of plants in the Rubiaceae family. Many species were formerly placed (along with other now-segregate genera) in a more inclusive Hedyotis. Bluets are often small and delicate. For example, H. rosea may attain a height of only one inch. Some species have a single-stem, while others are more `bunchy.` Flow...
Found on
http://en.wikipedia.org/wiki/Houstonia_(plant)

• (n.) A genus of small rubiaceous herbs, having tetramerous salveform blue or white flower. There are about twenty species, natives of North America. Also, a plant of this genus.
Found on
http://thinkexist.com/dictionary/meaning/houstonia/
Hous·to'ni·a noun [ New Latin So named after Dr. William
Houston , an English surgeon and botanist.]
(Botany) A genus of small rubiaceous herbs, having tetramerous salveform blue or white flower. There are about twenty species, natives of North America. Also, a plant of this genus. ...
Found on
http://www.encyclo.co.uk/webster/H/66

any North American plant, belonging to the genus Houstonia, of the madder family, esp. H. caerulea, the common bluet.
Found on
https://www.infoplease.com/dictionary/houstonia
No exact match found.