Pellita: Answers to key questions in Sedges
(Carex) of Saskatchewan, Fascicle 3, Flora of Saskatchewan by Anna Leighton
leading to this species. The
answers are in the order you would normally work through the key.
Stigmas 3; achenes three-sided,
occasionally terete, though their shape may be concealed by flattened
perigynia. NOT [stigmas 2; achenes lenticular]
Spikes 2 or more per culm, terminal and
lateral; spike bracts present on lateral spikes (except in Section Phyllostachyae),
lowest bract usually evident, often conspicuous. NOT [Spikes 1 per
culm, terminal; spike bracts absent].
Lower pistillate scales not bract-like or
leaf-like but similar in size and shape to individual perigynia (up to
twice as long as perigynia in C. magellanica ssp. irrigua).
NOT [Lower pistillate scales resembling green, leaf-like bracts much
longer and wider than individual perigynia]
Perigynia sparsely to densely pubescent
or puberulent (in C. pedunculata pubescence represented by very
short hairs scattered near tip; in some species of Section Acrocystis,
perigynia may be glabrous or virtually hairless, but all members of this
group have convexly 3-sided to terete achenes with tight fitting
perigynia and a stipe-like base about equal to beak in length). NOT
Perigynia usually less than 5 mm long but
if longer, beak distinctly shorter than perigynium body; pubescence
various. NOT [Perigynia 5-7 mm long with beak as long as or longer than
perigynium body; pubescence on the perigynia dense, stiff and pointing
Achenes with +/- flat sides; perigynia
loosely fitting achene and variously shaped in cross-section, densely to
sparsely pubescent (faintly puberulent with very short hairs scattered
near tip in C. pedunculata); pistillate spike bracts sheathing or
sheathless. NOT [Achenes convexly 3-sided to terete;
perigynia tightly enclosing achenes and convexly 3-sided to terete,
sparsely pubescent, (rarely glabrous in C. deflexa and C.
rossii, pubescent only on ribs in C. tonsa); stipe-like base
about equal to beak in length; pistillate spike bracts sheathless.
Section Acrocystis (C. deflexa, C. inops ssp.
heliophila, C. peckii, C. rossii, C. tonsa, C.
Beak 0.5-2 mm long, distinctly bidentate;
lowest spike bract blade at least twice as long as lowest spike, and
often as long as inflorescence. Section Paludosae (C.
houghtoniana, C. lasiocarpa, C. pellita). NOT
[Beak up to 0.5 mm long and lacking teeth; lowest spike bract blade
shorter than lowest spike. Section Clandestinae (C. concinna,
C. pedunculata, C. richardsonii)]
Pubescence on perigynia dense; perigynia
usually less than 4.2 mm long, obscurely nerved; semi-aquatic sedges;
NOT [Pubescence on perigynia short and sparse; perigynia 4-6.5 mm long,
prominently ribbed; plants of dry, sandy soil in wooded areas]
Leaves 2-3 (6) mm wide, flat; NOT [leaves
less than 2.2 mm wide, involute to rolled]