Flora of North America species comparison

alternate;

stipular glands absent or minute;

blade linear or narrowly oblong, 10–35 × 0.5–2(–2.5) mm, base flat, not clasping, margins without stalked glands.

alternate;

stipular glands only at proximal nodes, inconspicuous, or absent;

blade ± linear, 10–20(–30) × 1–2(–3) mm, base flat, not clasping, margins without stalked glands.

cymes monochasial (helicoid), open, internodes long, flowers widely scattered;

bract margins without prominent glands.

cymes mostly monochasial (scorpioid or helicoid), open, internodes long, flowers widely scattered;

bract margins without prominent glands.

5–15(–25) mm, 5–25 mm in fruit, pendent in bud, deflexed at 90° angle, slightly bent at apex.

0.5–2(–3) mm, to 6 mm in fruit, spreading at 45° angle, not bent at apex.

sepals erect, not reflexed at tip, ovate, 1.5–2.5(–3.5) mm, equal, margins minutely gland-toothed, surfaces glabrous;

petals widely spreading to reflexed, white or pale pink, usually darker-veined, obovate, 4–7 mm, apex obtuse;

cup white, rim petal attachments in indentations;

stamens exserted;

filaments (3–)4–5(–7) mm;

anthers pink to red-purple, white-margined, dehisced anthers 1.2–2 mm;

ovary chambers 6;

styles 3, white, 3.5–7 mm, exserted.

sepals erect, ± spreading at tip, lanceolate, 2–3 mm, equal, marginal glands tiny, surfaces glabrous or with hoary microscopic puberulence;

petals widely spreading, distal 1/2 ± recurved, light or bright yellow, veins sometimes ± red, obovate, 3.5–5.5 mm, apex often deeply notched;

cup yellow, rim hairy, rim with petal attachment in shallow sinus;

stamens exserted;

filaments 3–4 mm;

anthers yellow, dehisced anthers 1.2–1.4 mm;

ovary chambers 6;

styles 3, yellow, 3.5–4.5(–5) mm, exserted.

= 36.

= 34.