Flora of North America species comparison

frequently pink or reddish, especially with age, 1–6(–8) dm, stipitate glands hyaline or reddish brown and often black- or purple-tipped.

simple or branched.

petiole absent or 1–10 mm;

blade 2–18(–24) × 0.5–4(–5.5) cm, glabrous or sparsely stipitate-glandular abaxially and adaxially, hairs black- or purple-tipped.

cauline, alternate, simple;

stipules absent;

petiole present or absent;

blade margins sharply serrate or doubly serrate.

secund, 2–7-branched, each branch (6–)10–25(–30)-flowered.

terminal, scorpioid racemes.

0.5–3 mm.

hypanthium 0.5–1.5 × 1.5–3.5 mm;

sepals persistent, erect or spreading, unequal, 0.8–2 × 0.4–1 mm, margins entire or serrulate with 1–4 gland-tipped teeth per side;

filaments 1–2 mm;

anthers 0.7–1 mm;

pistil 3–4 mm;

stigmas often purple with age.

bisexual;

perianth and androecium hypogynous or perigynous;

hypanthium present;

sepals 5(–8), connate proximally;

petals absent or 1–8, distinct;

nectary disc absent;

stamens 10, distinct, adnate to rim of hypanthium;

anthers dehiscent by longitudinal slits;

pistils 1, (4–)5(–8)-carpellate, connate basally and laterally, partially adnate to hypanthium;

ovary superior or partially inferior, (4–)5(–8)-locular proximally;

placentation marginal;

ovules anatropous, bitegmic, crassinucellate;

styles 1 per carpel, distinct;

stigmas 1 per carpel, terminal, capitate.

capsular, dehiscence circumscissile proximal to free portion of styles.

0.5–0.7 × 0.2–0.3 mm, tubercles reddish or pinkish.

300–400, tan, yellowish brown, or pinkish, ellipsoid to subfusiform, funicular end more tapered;

embryo straight;

endosperm scant, cellular.

herbs.

= 18.