Flora of North America species comparison

strictly annual, disintegrating in 1st year;

blade oblong-ovate to ovate, 25+ mm wide, leathery, base cuneate, truncate, or rounded to lobate, sometimes cordate, margins crenate, teeth apices acute to rounded, surfaces sparsely hairy;

basal veins extending into distal 1/2 of blade, lateral veins 3–6 on each side of midvein.

persistent, some withering in 2d year as new leaves expand;

blade ovate or cordate, 25+ mm wide, not leathery, base cordate to lobate, margins ± incised-crenate or laciniate to ± pinnatifid, sometimes ± palmately lobed, teeth apices obtuse to rounded, surfaces sparsely hairy;

basal veins extending into distal 1/2 of blade, lateral veins 2–4 on each side of midvein.

erect, to 45 cm in fruit;

sterile bracts 10–30, ovate-spatulate, largest 1+ cm;

flowers 100+, densely aggregated (separating in fruit).

erect, to 16 cm in fruit;

sterile bracts 2+, ovate-spatulate, sometimes 1+ cm;

flowers 10–50, loosely aggregated.

inserted on receptacle.

epipetalous.

ovules 17–40.

glabrous or sparsely hairy at apex;

ovules 10–16.

densely hairy.

glabrous or sparsely hairy.

4, basal connation between abaxial and adaxial lobes on each side of flower.

4.

1–4, apex entire or erose;

corolla reddish, bluish purple, green, or white, bilabiate or unilabiate, rudimentary, much shorter than calyx, glabrous, lateral and abaxial petals of abaxial lip connate 1/2+ their lengths, abaxial and adaxial petal lips basally adnate to stamens, tube absent.

(3 or)4(or 5), apex entire or erose;

corolla blue, ± regular, campanulate, much longer than calyx, glabrous, tube conspicuous.