1	"Plant hairy at least in part (check sheaths, blades, peri)"	2
1	"Plant completely glabrous throughout"	3
2	"Leaves hairy; peri hairy or glabrous"	"Carex Group 1"
2	"Leaves glabrous; peri hairy"	"Carex Group 2"
3	"Inflorescence 1 terminal spikelet"	"Carex Group 3"
3	"Inflorescence generally >= 2 spikelets"	4
4	"Stigmas 3; fruit 3-angled"	5
4	"Stigmas 2; fruit lenticular"	7
5	"Inflorescence bract sheath >= 6 mm"	"Carex Group 4"
5	"Inflorescence bract sheath < 5 mm"	6
6	"Peri inflated at least near beak"	"Carex Group 5"
6	"Peri not inflated"	"Carex Group 6"
7	"Pistillate and staminate flowers on different stems (unisexual stems)"	"Carex Group 7"
7	"Pistillate and staminate flowers on same stem (bisexual stems)"	8
8	"Terminal spikelet(s) generally staminate; lateral spikelets pistillate (rarely tips staminate)"	"Carex Group 8"
8	"Terminal and lateral spikelets all a mix of staminate and pistillate flowers"	9
9	"Spikelets each with staminate flowers above pistillate flowers (often easiest to see in terminal spikelet; look for remnants of stamens)"	"Carex Group 9"
9	"Spikelets each with pistillate flowers above staminate flowers"	10
10	"Peri not winged (occasionally thin-edged above); stem generally solid; cespitose or rhizomed"	"Carex Group 10"
10	"Peri winged; stem hollow; cespitose"	"Carex Group 11"