Houstonia (plant) fruit is an often roughly cordate capsule enclosing many seeds and which usually dehisces via a suture across its apex. "Houstonia" consists of 20 species native to North America. Another 5 species are classified in the genus "Stenaria"; "Houstonia" without "Stenaria" is paraphyletic. Close relatives of the genus are "Oldenlandia microtheca" and, more distantly, "Arcytophyllum". Its members superficially resembles species of the genus "Myosotis" (Forget-me-nots), but are distinguished from the latter by having only 4 sepals (petals) instead of 5. Species accepted as of May 2014 are: Houstonia (plant) Houstonia (bluet) is a genus of plants in the family Rubiaceae.
Petals of Blood is a great reliance placed on such songs, which help tell, through the oral tradition of linking of proverbs and fables, the history of Ilmorog and Kenya before colonial intervention. "Petals of Blood" caused a stronger critical reaction than Ngugi's previous novels. The use of the past and historical memory is far more widespread in the novel due largely to the use of flashbacks, and questions relating to the past "from the central concerns" of the novel. The strong political motif that runs throughout the novel has also been discussed, focusing on the relation of political ideas to the "Petals