2024 Edition • Donate • Get the App • Cite this Page
X

Colors

Data mode

Account

Login
Sign up

Support FSUS...

We've finished our 2024 fundraiser. Many thanks to those who have given! It's not too late to support us (click here)...

Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.

Key to Carex, [26o] Section 11 Stellulatae: section Stellulatae

Copy permalink to share | Check for keys that lead to this key

1 Spikes usually solitary; leaves involute; anthers 2.0-3.6 mm long; [mucky bogs, south to DE and e. MD; disjunct in sc. NC and s. AL and s. MS]
1 Spikes 2-8; leaves flat or folded; anthers 0.6-2.2 (-2.4) mm long.
image of plant
Show caption*© Mark Kluge, some rights reserved (CC BY-NC), uploaded by Mark Kluge
  2 Perigynium beak smooth-margined (use at least 10× magnification)
image of plant
Show caption*© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward
image of plant
Show caption*no rights reserved, uploaded by Étienne Lacroix-Carignan
  2 Perigynium beak serrulate on margin (use at least 10× magnification).
    3 Widest leaves 2.8-5.0 mm wide.
      4 Lower perigynia of spikes mostly 1.1-1.7× as long as wide, mostly 2.1-3.0 mm wide
      4 Lower perigynia of spikes (1.5-) 1.7-3× as long as wide, mostly 1.2-2.0 mm wide.
image of plant
Show caption*© Gary P. Fleming
        5 Inflorescences mostly 3-8.5 cm long, the lowermost 2 spikes separated by 10-40 mm; [ sw. VA south to nw. SC and n. GA]
        5 Inflorescences mostly 1.5-3 cm long, the lowermost 2 spikes separated by 1.3-9.5 mm; [south to n. PA]
    3 Widest leaves 0.8-2.7 mm wide.
          6 Terminal spikes entirely staminate; anthers (1.0-) 1.2-2.2 (-2.4) mm long
          6 Terminal spikes partly or entirely pistillate; anthers 0.6-2.2 (-2.4) m long.
             7 Terminal spikes without a distinct narrowed base of staminate scales, the staminate portion < 1 mm long
             7 Terminal spikes with a distinct narrowed base of staminate scales 1.0-16.5 mm long.
               8 Lower perigynia 2.0-3.0 mm wide
               8 Lower perigynia 0.9-2.0 mm wide.
image of plant
Show caption*© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward
                 9 Lower perigynia mostly 2.8-4.8 mm long; lower perigynia (1.7-) 1.8-3.6× as long as wide; perigynia beaks 0.95-2.0 mm long, mostly 0.45-0.85× as long as the perigynium body
                 9 Lower perigynia mostly 1.9-3.0 mm long; lower perigynia 1.0-2.0 (-2.2)× as long as wide; perigynia beaks 0.4-0.95 mm long, mostly 0.2-0.5× as long as the perigynium body.
                   10 Perigynia mostly nerveless over the achene on the adaxial surface; beak of perigynia conspicuously setulose-serrulate; perigynia often more-or-less convexly tapered from widest point to the beak, thus forming a weak shoulder; [of calcareous sites, in our area restricted to the Mountains of VA]
                   10 Perigynia mostly 1-10-nerved over the achene on the adaxial surface; beak of perigynia more sparsely serrulate, with definite spaces between the often single teeth; perigynia more-or-less cuneate or concavely tapered from widest point to the beak, not forming a shoulder; [of a variety of situations, not generally calcareous].
                     11 Widest leaves 1.6-2.7 mm wide; infructescence mostly 18-45 mm long; [widespread in our area]
                     11 Widest leaves 0.6-1.6 mm wide; infructescence mostly 8-20 mm long; [primarily of the Coastal Plain in our area, widely scattered elsewhere]