OregonFlora species comparison

terete; to 100 cm; nodal glands absent.

terete; to 100 cm; nodal glands absent.

submersed, sessile, attached at stem nodes, not attached to stipules;

stipules 1.2– 1.7 mm, fibrous, disintegrating to persistent fibers; even on proximal portion of stem;

tip shredding, obtuse;

blades ovate-lanceolate to narrowly lanceolate, 1–12 cm, 10–20 mm wide;

base rounded, clasping;

margins entire to wavy;

tip acute to obtuse; lacunae absent;

veins 3–35.

submersed, conspicuously 2-ranked, sessile; more or less sti?;

blades attached to lower 25% of petiole;

stipules ligulate, 0.5– 2 cm, fibrous, shredding at tip;

tip obtuse;

blades linear to lanceolate, 20–70(120) × 3–4(8) mm;

base rounded, with basal lobes (auricles);

margins minutely spinulose to serrulate;

tip acute; lacunae absent;

veins 20–60.

emersed;

spikes cylindric, 13–37 mm;

peduncles terminal or axillary; erect to rarely recurved, 15–148 mm.

often branched;

peduncles axillary; erect, 30–50(70)mm;

spikes moniliform, 7–20 mm.

sessile, obovoid; turgid to concave, 2.2–4.2 × 1.7–2.9 mm; greenish brown, rarely dorsally keeled;

beaks erect, 0.4–0.7 mm.

stipitate, obliquely obovoid; turgid, 3–4(5) × 2(3.3)mm, brown, dorsally and laterally keeled;

beaks erect, recurved at tip, 0.7–0.9 mm.