Flora of North America species comparison

solitary, erect, straight;

branches distal or along entire stem, proximal or distal longest, antrorse, straight to upcurved; hairy.

blade 72–295 × 14–45 mm, widest intersinus distance 10.1–23.3 mm;

proximal oblanceolate or elliptic, margins serrate to pinnate, teeth or lobes 16–26, slightly antrorse, 1–16.5 mm;

distal elliptic to lanceolate, base clasping or not, margins serrate to pinnate, teeth or lobes 9–20, slightly antrorse, 5.3–13.7 mm;

surfaces with needlelike trichomes.

alternate [opposite], simple;

stipules absent;

petiole present or absent;

blade sometimes lobed, margins entire, serrate, dentate, or crenate;

venation pinnate, basal secondary veins commonly present.

margins pinnate.

terminal, cymes, thyrses, racemes, panicles, or flowers solitary.

petals white, 47–75 × 13–22.7 mm, apex acute to attenuate, glabrous abaxially;

stamens white to yellow, 5 outermost petaloid, filaments spatulate, strongly clawed, 48–75 × 12–23 mm, without anthers, second whorl with anthers;

anthers straight after dehiscence, epidermis smooth;

styles 36–53 mm.

bisexual, usually radially symmetric, rarely bilaterally symmetric (by bilateral symmetry of corolla, androecium, or gynoecium);

perianth and androecium epigynous;

hypanthium adnate to ovary proximally and free distally, or completely adnate to ovary;

sepals 5, radially symmetric, distinct or connate basally;

petals 5, radially or bilaterally symmetric, distinct or connate, sometimes postgenitally coherent;

nectary absent or present, distal on ovary;

stamens 5–150+, distinct, free or adnate to petal bases, bilaterally or radially symmetric;

anthers dehiscing by longitudinal slits;

staminodes absent or present, sometimes petaloid and petals appearing to be 6+;

pistil 1, 3–7-carpellate, ovary inferior, 1-locular, placentation parietal, subapical, or apical;

ovules 1–60+ per locule, anatropous (epitropous);

style 1;

stigma 1, 2–5(–7)-lobed (lobes usually as many as carpels, except in pseudomonomerous Gronovioideae).

capsules, dehiscence by apical valves [splitting longitudinally], or cypselae, sepals or sepals and petals persisting.

cylindric, 30–43 × 12–17 mm, base tapering, not longitudinally ridged.

2.3–4 mm;

coat anticlinal cell walls straight, papillae 4–10 per cell.

1–60+ per fruit.

= 22.