Flora of North America species comparison

procumbent to ascending.

ascending or procumbent.

blades cuneate, obovate, or obcordate, 8–25 × 7–20 mm, margins serrate on distal 1/3, often with conspicuous central, purple-red (anthocyanin) blotch adaxially.

blades usually obovate, rarely oblanceolate, 5–8(–12) × 2–7 mm, margins serrate on distal 1/3.

(1 or)2–5(–8)-flowered, racemes.

2–5(–8)-flowered, racemes.

4–5(–6) mm;

calyx pubescent, hairs eglandular, sometimes multicellular and gland-tipped, lobes equal to or longer than tube;

corolla yellow, 2 times length of calyx.

2–4.5(–6) mm;

calyx pubescent, hairs eglandular and/or glandular, lobes equal to tube;

corolla yellow, less than 2 times length of calyx.

with 3–5(–7) coils, shortly ellipsoid to subglobose (ends rounded), or discoid to cylindriform (ends flattened), (4–)5–9 × (4–)5–7(–8) mm, glabrous, margin usually prickly, sometimes tuberculate, prickles, when present, often relatively thin and flexible, base 2-rooted, 1 root arising in dorsal suture, other in submarginal vein;

faces soft, coil face with venation anastomosing considerably on outer 1/3, coil edge in end view shows central groove flanked by lateral grooves to form pattern of 3 grooves separating 4 ridges, not visible in side view of coil.

with 3–5 coils, discoid, cylindrical, or ovoid, 3–5 × 2.5–6 mm, hairs glandular and/or eglandular, margin usually prickly, sometimes tuberculate, prickles, when present, often relatively thin and flexible, base 2-rooted, 1 root arising in dorsal suture, other in submarginal vein;

faces soft, coil face with strongly curved, unbranched radial veins entering broad, veinless margin that occupies 1/3 outer radius of coil face.

2+, yellow or yellow-brown, reniform, 2–3.5 × 1.2–1.5 mm;

radicle usually slightly more than 1/2 seed length.

3–10, yellow to light brown, somewhat reniform, 1.5–2.5 × 0.9–1.3 mm;

radicle 1/2 seed length.

margins deeply dentate to lobed.

margins entire or minutely dentate at base.

= 16.

= 16.