Flora of North America species comparison

stiffly erect or ascending, branched at base and appearing clustered, 40–80 cm, glabrescent or sparsely uncinate-puberulent.

ascending to erect, branched, 30–80 cm, inconspicuously uncinate-puberulent or glabrescent.

unifoliolate;

stipules caducous, narrowly ovate, 3–9 mm;

petiole 10–30 mm;

leaflet blades linear, (40–)70–130 × 2–5 mm, length 10+ times width, apex acute or acuminate, surfaces uncinate-puberulent and sparsely strigose on veins abaxially, uncinate-puberulent adaxially.

unifoliolate;

stipules ± persistent, narrowly ovate-deltate, 3–3.5 mm;

petiole 6–11 mm;

leaflet blades ovate to narrowly ovate, 30–80 × 10–30 mm, length (2–)2.5–5 times width, apex acute or obtuse, with paler patches along midrib adaxially, surfaces uncinate-puberulent and villous.

branched or unbranched;

rachis sparsely uncinate-puberulent;

primary bracts ovate, 2–3 mm.

often numerous, slender and flexuous, branched or unbranched;

rachis densely uncinate-puberulent and villous;

primary bracts narrowly ovate, 1–2 mm.

10–20 mm, uncinate-puberulent or glabrescent.

4–10 mm.

calyx 2 mm, puberulent and uncinate-puberulent, tube 0.8 mm;

abaxial lobes 1.2 mm, lateral lobes 1 mm;

corolla ephemeral, purple, 3 mm.

calyx 2.5–3 mm, puberulent and sparsely pilose, tube 1 mm;

abaxial lobes 2–3 mm, lateral lobes 2 mm, adaxial connate nearly to apex;

corolla pink to purple, 4–5 mm.

margins slightly involute, sutures equally crenate;

connections central, 1/4 as broad as segments;

segments 3–6, broadly elliptic, (2–)3–3.5 × 2.5–3 mm, convex or rounded abaxially and adaxially, sparsely uncinate-puberulent, sutures moderately uncinate-puberulent;

stipe to 1 mm.

margins slightly involute when young, sutures crenate abaxially, sinuate adaxially;

connections adaxial, 1/5 as broad as segments;

segments 3–5, elliptic to obovate, 2.5–6 × 3–3.5 mm, rounded abaxially, convex adaxially, sparsely uncinate-puberulent, sutures glabrous;

stipe 1.5–2.5 mm.

= 22.