Flora of North America species comparison

solitary, erect, straight;

branches distal or along entire stem, distal or proximal longest, antrorse, straight, proximal not decumbent; hairy or glabrescent.

blade (23–)29–78.4 × 3–14.6 mm, widest intersinus distance 1.6–8.5 mm;

proximal oblanceolate or elliptic, margins dentate to serrate, teeth 4–12, proximal sides slightly antrorse, distal sides perpendicular to leaf axis, 0.8–5.3 mm;

distal oblanceolate, elliptic, lanceolate, or linear, base not clasping, tapered, margins usually dentate to serrate, rarely entire, teeth (0–)2–10, proximal sides antrorse, distal sides perpendicular to leaf axis, 0.4–5.3 mm;

abaxial surface with simple grappling-hook, complex grappling-hook, and needlelike trichomes, largest trichomes with pearly white bases, adaxial surface with needlelike trichomes.

persisting;

petiole present or absent;

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

petiole present or absent (proximal leaves), absent (distal leaves);

blade linear-lanceolate to linear (proximal leaves), ovate to linear (distal leaves), to 13 cm, margins usually moderately to shallowly lobed, rarely entire.

margins entire.

green, sometimes with white base, ovate, 3–4.1 × 1.1–1.7 mm, width 1/4–1/2 length, not concealing capsule, margins entire.

petals golden yellow, 8.6–13.9(–17.4) × 2.9–4.7(–6.1) mm, apex rounded, glabrous abaxially;

stamens golden yellow, 5 outermost petaloid, filaments narrowly spatulate, slightly clawed, 6.7–13.2(–15.4) × 1.7–4.3 mm, usually without, rarely with, anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 4.8–11.3 mm.

sepals 2–3 mm;

petals orange proximally, yellow distally, 2–4 mm, apex retuse or rounded;

stamens 10–30, 2–3 mm, filaments monomorphic, filiform, unlobed;

styles 2–3 mm.

cup-shaped, 6.2–11.4(–13) × 6–8.4 mm, base rounded, not longitudinally ridged.

cylindric or clavate, 6–15 × 2–3 mm, axillary curved to 20° at maturity, usually inconspicuously longitudinally ribbed.

coat anticlinal cell walls wavy, papillae 5–13 per cell.

15–30, in 2+ rows distal to mid fruit, tan, not dark-mottled, usually irregularly polygonal, occasionally triangular prisms proximal to mid fruit, surface colliculate under 10x magnification; recurved flap over hilum absent;

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

= 20.

= 54.