Flora of North America species comparison

blades narrowly linear or filiform (rarely linear), usually convolute or folded (especially in mature and/or dry plants), rarely plane (when young), 2–4(–5) × 0.1–0.2 cm.

blades linear or narrowly linear (occasionally linear-lanceolate or almost filiform), usually plane or occasionally folded (especially in dry plants), 1.5–3.5(–4) × 0.1–0.3 cm.

narrowly ovate-lanceolate, lanceolate, linear-lanceolate, or linear, 0.5–1.5(–2) × 0.1–0.3(–0.4) cm, (most bracts within inflorescence rather uniform, usually narrower than mature fruits).

ovate-lanceolate,lanceolate, linear-lanceolate, or occasionally proximal ones almost linear, much longer than distal, 0.5–2(–3.5) × (0.2–)0.3–0.7 cm.

lax, usually interrupted from base to apex, rarely slightly condensed (only at apex when immature), narrowly linear or linear.

usually lax, interrupted, rarely ± condensed distally, linear, narrowly linear, or occasionally narrowly clavate.

segments 1–3.

segment 1.

straw colored (yellowish brown), light brown, deep olive green, occasionally tinged with red, without spots and warts, convex abaxially, plane or slightly concave adaxially, obovate or broadly elliptic, often broadest near middle (rarely slightly above), 2.3–3.3(–3.5) × (1.8–)2–2.8 mm, shiny;

wing translucent, thin, usually 0.1–0.3 mm wide, margins entire, apex rounded.

yellowish brown, greenish brown, light brown, or brown, often with reddish brown spots and whitish warts, slightly convex abaxially, usually plane or slightly concave adaxially, obovate or obovate-elliptic, usually broadest beyond middle, (2.3–)2.5–4.5 × 2–3.5 mm, shiny or dull;

wing translucent, thin, (occasionally translucent only at margin, thick), (0.15–)0.2–0.3(–0.4) mm wide, margins entire or rarely indistinctly erose, apex broadly triangular, less commonly truncate or rounded.