Flora of North America species comparison

erect or spreading.

blades ovate to subspheric, unlobed or acutely 3-lobed, 5–10(–30) cm, base closed-cordate.

stipules caducous, filiform;

blade ovate to subround, unlobed or 3-lobed, base cordate [obtuse or subtruncate], margins toothed.

terminal, usually open panicles or cymes, individual units 2+-flowered, sometimes solitary flowers.

axillary and solitary flowers or cymes or terminal and racemes or panicles;

involucellar bractlets absent.

calyx campanulate, smooth or ribbed, (7–)8–13.5 mm, subequal or slightly exceeding fruits, lobes ovate to triangular, (3–)4–6.5 × (3–)4–5.5 mm;

corolla orange-yellow, (12–)15–25 mm;

staminal column 10 mm, including filaments.

calyx [5–]8–13.5[–apex];

filaments terminal and subterminal;

ovary 5-carpellate;

ovules 3 per carpel, pendulous or horizontally pendulous, 2 collateral in upper carpel cell, 1 in lower carpel cell;

style 5-branched;

stigmas capitate.

schizocarps (± functionally capsular), erect, not inflated, turbinate, 5-lobed, starlike in cross section, papery to indurate, hairy;

mericarps 5, 2-celled, lower cell ± trapezoidal, 1-seeded, upper cell angular-orbiculate, collaterally 2-seeded, cells sometimes separated by endoglossum.

reddish brown to blackish, 2.3–3 mm.

obovoid-reniform, glabrous.

moderately dorsolaterally constricted, 7–9 mm including dorso-apical apiculus or spine to 1.5(–2) mm, stellate- and glandular-hairy, endoglossum absent.

= 8.

= 16.