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Information Plants not stoloniferous. Flowering stems 15–50(–65) cm. Leaves: petiole 3–10(–19) cm, short stipitate-glandular and sparsely long stipitate-glandular, longer hairs spreading or retrorse, white or reddish brown; blade cordate-ovate or triangular-cordate, longer than or ± as long as wide, 1.3–7.7(–9) × 1.2–7.1(–8) cm, margins 5- or 7-lobed, irregularly crenate or dentate, uniformly ciliate, apex of terminal lobe acute, surfaces short stipitate-glandular and sparsely long stipitate-glandular; cauline leaves absent or 1–2, proximal, alternate, petiolate, 0.3–3 × 0.3–1.6 cm. Inflorescences 1–3, closely to remotely 8–35-flowered, 1(–2) flowers per node, weakly secund or not secund, 15–50(–65) cm, short stipitate-glandular and sparsely long stipitate-glandular proximally, short stipitate-glandular distally. Pedicels 0.2–1.5 mm, short stipitate-glandular. Flowers: hypanthium obconic-campanulate, 1.2–1.8 × 1.4–2.2 mm; sepals erect or spreading, whitish, oblong-ovate to oblong-triangular or triangular, (0.6–)0.9–1.2 × 0.6–1 mm; petals white, sometimes pink or purple tinged, 3–5-lobed, 1–1.5 mm, lobes linear, lateral lobes ascending; stamens 5, opposite sepals; filaments white, 0.2–0.3 mm; anthers 0.1–0.2 × 0.1–0.2 mm; ovary at least 3/4 inferior; styles spreading, flattened, 0.1–0.2 mm; stigmas indistinctly 2-lobed. Seeds dark reddish brown or blackish, 0.8–1.4 mm, pitted. 2n = 14.

Information Plants not stoloniferous. Flowering stems 10–55 cm. Leaves: petiole 2–15 cm, short stipitate-glandular and long stipitate-glandular, longer hairs retrorse or, sometimes, spreading, white, tan, or brown; blade cordate or reniform, shorter than or sometimes ± as long as wide, (1.5–)2.5–10 × 2–8(–12) cm, margins 5- or 7-lobed, singly or doubly crenate, uniformly ciliate, apex of terminal lobe rounded to obtuse, surfaces glabrous or short stipitate-glandular and sparsely long stipitate-glandular; cauline leaves absent. Inflorescences 1–3(–6), closely 10–45-flowered, 1 flower per node, strongly secund, 10–55 cm, short stipitate-glandular and sparsely long stipitate-glandular proximally and distally. Pedicels 0.5–1.5 mm, short stipitate-glandular. Flowers: hypanthium turbinate-campanulate, 1.4–2.7 × 1.5–2.5(–3) mm; sepals erect or with tips spreading, greenish white to white, sometimes purple-tinged, oblong, oblong-obovate, or widely ovate, 1–2.2 × 0.7–1.2 mm; petals white, sometimes purple-tinged, 3-lobed or, sometimes, unlobed, 1.5–4 mm, lobes linear to lanceolate, lateral lobes ascending or spreading; stamens 5, opposite sepals; filaments white, 0.1–0.2 mm; anthers 0.3–0.5 × 0.2–0.3 mm; ovary ca. 2/3–3/4 inferior; styles divergent, flattened, 0.1–0.2 mm; stigmas unlobed. Seeds dark reddish brown to blackish, 0.8–1.2 mm, pitted. 2n = 14.

Information Herbs, rhizomatous, stoloniferous or not; caudex not cormlike, usually with persistent leaf bases. Flowering stems ascending or erect, leafy or leafless, (2–)6–55(–65) cm, subglabrous or short to long stipitate-glandular. Leaves in basal rosette and cauline; cauline leaves absent or 1–3, alternate or opposite; stipules present; petiole present, sometimes absent in cauline leaves, subglabrous or stipitate-glandular; blade ovate, cordate, or reniform, usually shallowly lobed, rarely unlobed, base cordate to truncate, margins crenate to dentate, apex acute, obtuse, or rounded, surfaces glabrous or subglabrous to variously stipitate-glandular; venation palmate. Inflorescences racemes, terminal from axillary buds in rosette, (scapose or leafy, anthesis usually acropetalous, basipetalous in M. caulescens, not secund to weakly secund or, rarely, strongly secund), 2–60-flowered, sometimes flowers solitary, bracteolate. Flowers: hypanthium adnate ± entire length of ovary, free from ovary to 1.5 mm, green, greenish white, or greenish yellow; sepals 5, white, greenish white, greenish, yellowish green, or greenish yellow, sometimes purple tinged; petals 5, greenish, greenish yellow, whitish green, or white, sometimes pink or purple tinged, (claw slender); nectariferous tissue proximal to stamens absent or obscure; stamens 5 or 10, opposite or alternate with sepals; filaments filiform; ovary nearly superior to nearly completely inferior, 1-locular, (2-lobed), carpels connate ± entire length, (equal); placentation parietal; styles 2; stigmas 2. Capsules obscurely 2-beaked, (dehiscent by adaxial sutures on free, lobed portion, dehiscent fruit sometimes appearing almost circumscissile). Seeds (4–40), reddish purple, dark reddish brown, or blackish, shiny, ellipsoid to ovoid, nearly smooth or pitted. x = 7.