Carex intumescens

KEY TO CAREX INTUMESCENS View in CoL VARIETIES

1. Perigynium length/width ratio (2.8–)3.0–4.5; perigynia 2.9–3.0(–4.3) mm wide; maximum number (on a plant) of perigynia per pistillate spike 2–7(–8); perigynium scale length 3.9–5.8(–6.0) mm; [widespread in the northern US and adjacent Canada, but southwards of New York restricted to moist (but not wetland) high elevation habitats such as spruce-fir forests] _____________________________________________________________________ C.intumescens var. fernaldii View in CoL

1. Perigynium length/width ratio 1.8–2.9(–3.9); perigynia (2.9–)4.0–6.0 mm wide; maximum number (on a plant) of perigynia per pistillate spike (3) 6–17; perigynium scale length (4.0–)5.0– 12.5 mm; [widely distributed in wetlands throughout eastern North America] ___________________________________________________ C. intumescens var. intumescens View in CoL