Flora of North America species comparison

multiple, erect or decumbent, zigzag or straight;

branches along entire stem, distal longest, antrorse, straight; hairy.

blade 23–35.3 × 6.5–13(–16) mm, widest intersinus distance 3.7–11.3 mm;

proximal oblanceolate, margins dentate, teeth 4–10, perpendicular to leaf axis, 0.5–1.8 mm;

distal elliptic to lanceolate, base not clasping, margins dentate to pinnate, teeth or lobes 4–8, perpendicular to leaf axis, 1.3–3.6 mm;

abaxial surface with simple grappling-hook, complex grappling-hook, and needlelike trichomes, adaxial surface with simple grappling-hook and needlelike trichomes.

persisting;

petiole present or absent;

blade linear-lanceolate to linear, margins usually deeply to moderately lobed, sinuses extending 1/4+ to midvein, rarely entire.

petiole absent;

blade ovate-lanceolate to lanceolate, to 17 cm, margins usually dentate or entire, rarely deeply lobed.

green, ovate to lanceolate, 2.7–6.6 × 0.9–2.1 mm, width 1/5–1/3 length, not concealing capsule, margins 3-lobed or entire.

margins entire.

sepals 1–7 mm;

petals yellow to orange proximally, yellow distally, 4–12 mm, apex acute;

stamens 20+, 3–6.5 mm, filaments monomorphic, filiform, unlobed;

styles 3–6.5 mm.

petals golden yellow, 16.1–18.5 × 6.7–9.2 mm, apex rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 7.8–9.3 × 2.3–3.3 mm, with anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 6.3–8.6 mm.

narrowly cylindric, 7–32 × 1–3 mm, axillary curved to 90° at maturity, often prominently longitudinally ribbed.

cup-shaped, 8–12 × 6–7.2 mm, base rounded, not longitudinally ridged.

10–20, in 1 row distal to mid fruit, tan, dark-mottled or not, triangular prisms, surface ±smooth under 10x magnification; recurved flap over hilum absent;

seed coat cell outer periclinal wall flat.

coat anticlinal cell walls straight, papillae 11–15 per cell.

= 18.