Flora of North America species comparison

multiple, erect or decumbent, straight;

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

blade (13.5–)16.4–33.3 × 1.5–8.8 mm, widest intersinus distance 1.5–6.1 mm;

proximal oblanceolate to spatulate, margins entire or pinnate, lobes 0–8 (always some leaves with 5+ lobes), perpendicular to leaf axis, 0.5–2 mm, always some more than 1.4 mm;

distal oblanceolate, elliptic, lanceolate, or linear, base not clasping, margins entire, dentate, or pinnate, teeth or lobes 0–6, perpendicular to leaf axis, 0.1–2 mm;

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

persisting;

petiole present or absent;

blade lanceolate to linear, margins deeply to shallowly lobed.

petiole absent;

blade ovate to linear, to 12 cm, margins deeply lobed to dentate.

green, ovate to lanceolate, 6.6–12.8 × 1.9–6.8 mm, width 1/5–2/3 length, not concealing capsule, margins 3–7-lobed.

margins entire.

sepals 3–13 mm;

petals red to orange proximally, orange to yellow distally, 8–22 mm, apex mucronate, rounded, or retuse;

stamens 20+, 4–11 mm, filaments monomorphic, filiform, unlobed;

styles 5–13 mm.

petals golden yellow, 7.2–11.9 × 2.7–4.9 mm, apex acute to rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 5.5–10.3 × 1.4–2.7 mm, with anthers, second whorl with anthers;

anthers usually twisted after dehiscence, epidermis papillate;

styles 5–9 mm.

clavate, 12–35 × 2–4 mm, axillary curved to 90° at maturity, usually inconspicuously longitudinally ribbed.

cup-shaped, 4.9–7.6 × 3.4–5.5 mm, base rounded to tapering, not longitudinally ridged.

20–40, in 2+ rows distal to mid fruit, tan, dark-mottled or not, usually irregularly polygonal, occasionally triangular prisms proximal to mid fruit, surface tuberculate under 10x magnification; recurved flap over hilum absent;

seed coat cell outer periclinal wall domed, domes on seed edges more than 1/2 as tall as wide at maturity.

coat anticlinal cell walls straight, papillae 5–8 per cell.

= 18.

= 22.