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 usually present at all nodes;

blade linear, 10–25(–30) × (0.5–)1–1.5 mm, base flat, not clasping, margins eglandular.

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

bract margins without prominent glands.

cymes monochasial, dense, sparingly branched, internodes sometimes all shortened, or long proximally, flowers clustered at inflorescence tips;

bract margins eglandular.

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

0.5–3 mm, scarcely longer in fruit, ascending, 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, narrowly ovate, 3–4 mm, subequal, margins glandular-toothed, surfaces glabrous;

petals widely spreading, yellow, often tinged with orange-red, obovate, (4–)6–7(–10) mm, apex obtuse, slightly erose;

cup yellow, rim with petal attachments set in notches;

stamens exserted;

filaments (4–)6–8 mm;

anthers yellow, dehisced anthers 1.5–2 mm;

ovary chambers 6;

styles 3, yellow, (3–)4–6(–8) mm, exserted.

= 36.

= 36.