Flora of North America species comparison

basal and cauline, (basal persistent, cauline ± inconspicuous);

petiole rounded, 2–20 mm;

blade round to reniform, irregularly shallowly lobed, 20–80(–100) mm, thin, margins serrate, stipitate glandular-ciliate, apex obtuse to rounded, surfaces sparsely hairy.

basal and cauline, (basal usually withered at flowering, cauline reduced);

petiole absent or present, flattened, 2–10[–20] mm;

blade spatulate or elliptic to ovate, (2–)3(–5)-lobed apically or unlobed (lobes divergent), 2–10(–23) mm, thin, margins entire, stipitate-glandular, apex obtuse, surfaces ± purple-tipped stipitate-glandular to glabrate.

30+-flowered, open, much-branched thyrses, usually some or all flowers replaced by bulbils (sometimes bulbils absent), 15–40 cm, dark purple-tipped stipitate-glandular;

bracts (± inconspicuous), petiolate or sessile.

2–10[–50]-flowered, loose thyrses or cymes, sometimes solitary flowers, 0.5–6 cm, purple-tipped stipitate-glandular;

bracts sessile or short-petiolate.

sepals reflexed (at least in fruit), ovate to elliptic, margins eciliate, surfaces sparsely stipitate-glandular or glabrous;

petals white, not spotted, narrowly ovate to elliptic, (3–)4–6 mm, longer than sepals;

filaments strongly club-shaped;

ovary superior.

sepals erect, elliptic to ovate, margins ± stipitate-glandular, surfaces adaxially ± stipitate-glandular;

petals white, not spotted, narrowly obovate to oblanceolate, 2.5–3 mm, longer than sepals;

ovary 3/4 to completely inferior.

= 36, ca. 48, 50.

= 22 (Europe).