Flora of North America species comparison

ascending or sprawling, diffuse, 20–50 cm, pubescent [puberulent].

erect or ascending, usually much branched, sometimes woody at base, 20–100 cm, puberulent or pubescent, glabrescent.

unifoliolate;

stipules 7–20 mm;

petiole 1–2 mm;

leaflet blades: proximals usually orbiculate, broadly ovate, elliptic, or oblong, distals lanceolate or narrowly lanceolate, 0.5–5 × 0.3–2.5 cm, base subcordate, apex acute to emarginate and mucronulate, abaxial surface inconspicuously uncinulate-pubescent.

unifoliolate;

stipules 5–20 mm;

petiole 2–8 mm;

leaflet blades: proximals usually orbiculate, elliptic, or oblong, distals often lanceolate, 1–10 × 0.6–3 cm, base subcordate, apex acute to emarginate and mucronulate, abaxial surface finely puberulent, with some hairs on veins.

densely 6–20-flowered, usually terminal, racemes, 2–5(–7) cm.

6–20-flowered, terminal or leaf-opposed, usually racemes, sometimes panicles, usually 5–15 cm.

1–2 mm.

1–2 mm.

calyx 5–6 mm, tube 1.5–2 mm, lobes valvate at base (separated by sinuses), narrowly triangular, 3–4 mm, acuminate;

corolla orange or lavender-pinkish, 5–6 mm (slightly longer than calyx).

calyx 5–6 mm, tube 1.5–2 mm, lobes valvate at base, narrowly triangular, 3–4 mm, acuminate;

corolla orange-buff to reddish violet or pink, 5–6 mm.

dense (much crowded), internodes much shorter than loment length.

lax, internodes longer than 1/2 loment length.

brown or yellowish brown, oblong, 1.5–2.5 × 1–1.2 mm.

brown, oblong, 2 × 1 mm.

subterete, oblong or linear, 10–20 × 2–3 mm, much longer than calyx, margins straight, not constricted between segments, uncinulate-puberulent;

segments 3–7(or 8), broadly oblong or quadrate, 2–3 mm, lateral surfaces reticulate, obscurely sculpted;

septa furrowed between segments with internal cross partitions inside.

subterete, oblong or linear, 10–25 × 2 mm, much longer than calyx, margins straight, not constricted between segments, uncinulate-puberulent;

segments (2–)4–6(–8), broadly oblong or quadrate, 2.5–4 mm, lateral surfaces coarsely reticulate, obscurely sculpted, ridged between segments, puberulent;

septa without internal cross partitions, except sometimes present at distal joints.

= (14) 16.

= 16.