What is "sphenopholis"

Sphenopholis is a genus of North American and Hawaiian plants in the grass family.

They are known generally as wedgescales.

1. Sphenopholis filiformis - longleaf wedgescale - TX OK AR LA TN MS AL GA FL NC SC VA PA
2. Sphenopholis intermedia - slender wedgescale - Canada (every province + territory except Nunavut), USA (every state except California + Hawaii)
3. Sphenopholis interrupta - CO OK AZ NM TX LA, Baja California
4. Sphenopholis longiflora - Texas wedgescale - TX OK AR LA
5. Sphenopholis nitida - shiny wedgescale - Ontario, eastern half of United States
6. Sphenopholis obtusata - prairie wedgescale - widespread in contiguous United States + southern Canada, plus Hawaii, Mexico + Hispaniola
7. Sphenopholis × pallens - scattered locations in eastern half of USA—hybrid S. obtusata × S. pensylvanica
8. Sphenopholis pensylvanica - swamp wedgescale - eastern half of USA