Flora of North America species comparison

erect.

stipules early-deciduous, subulate;

blade variable, sometimes ovate, [oblong or lanceolate], often 3–5-angled, -lobed, or –parted, base truncate to cordate, margins crenate [serrate], surfaces minutely stellate-hairy, with 1+ prominent, foliar nectaries (glands) on abaxial side at base of central vein.

axillary solitary flowers or fascicles, [terminal racemes];

involucel present, bractlets persistent, 5, basally connate.

1.5–7 mm.

calyx not accrescent, not inflated, lobes keeled, 1-veined, lanceolate, elliptic to ovate, usually acute, usually obscured by involucel;

corolla shallowly campanulate to rotate, rose-pink, drying lavender;

staminal column included;

ovary 5-carpellate;

ovules 1 per cell;

style 10-branched, 2 per carpel;

stigmas capitellate.

schizocarps, erect, not inflated, oblate, unwinged, slightly indurate;

mericarps 5, 1-celled, without dorsal spur, apex rounded, dorsal surface prominently glochidiate [smooth], otherwise hirtellous or glabrous, flat lateral surfaces striate, indehiscent.

1 per mericarp, obovoid or reniform, glabrous.

= 7.