Flora of North America species comparison

multiple, erect, straight;

branches distal or along entire stem, distal longest or all ± equal, antrorse, upcurved; hairy.

blade 17–103 × 7.6–41.2 mm, widest intersinus distance 5.1–35.3 mm;

proximal oblanceolate to elliptic, margins serrate, teeth 6–22, slightly antrorse, 0.4–5.3 mm;

distal elliptic, lanceolate, or deltate, base clasping, margins serrate, teeth 6–16, slightly antrorse, 0.5–4.2 mm;

abaxial surface with complex grappling-hook trichomes, adaxial surface with complex grappling-hook and needlelike trichomes, both surfaces green, moderately hairy.

persisting;

petiole present or absent;

blade lanceolate to linear, margins usually deeply to shallowly lobed, rarely entire.

petiole absent;

blade ovate-lanceolate to linear, to 15 cm, margins deeply to shallowly lobed or entire.

green, lanceolate, 4.5–8.3 × 1.2–3.6 mm, width 1/5–1/2 length, not concealing capsule, margins entire.

margins entire.

sepals 3–8 mm;

petals yellow to orange proximally, yellow distally, (7–)8–18 mm, apex rounded or acute apex;

stamens 20+, 3–8 mm, filaments monomorphic, filiform, unlobed;

styles 4–8 mm.

petals golden yellow, 7–14.5(–16.2) × 1.7–5.2 mm, apex rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 5.3–11.1(–15.4) × 0.6–4.4 mm, with anthers, second whorl with anthers;

anthers twisted after dehiscence, epidermis smooth;

styles 3.8–8.1 mm.

clavate, 13–26 × 2–3.5 mm, axillary curved to 180° at maturity, usually inconspicuously longitudinally ribbed.

cup-shaped, 5.8–9 × 5.2–8.8 mm, base rounded, not longitudinally ridged.

15–40, in 2+ rows distal to mid fruit, tan, usually dark-mottled, usually irregularly polygonal, occasionally triangular prisms proximal to mid fruit, surface colliculate under 10x magnification; recurved flap over hilum usually present;

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

coat anticlinal cell walls straight, papillae 6–17 per cell.

= 18.

= 22.