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five-stamen mitrewort, fivestamen miterwort

angle-leaf Bishop's-cap, angle-leaf mitrewort, angleleaf miterwort

Habit Plants sometimes stoloniferous. Plants not stoloniferous.
Flowering stems

8–48(–60) cm.

15–50(–65) cm.

Leaves

petiole (0.9–)1.5–8.5(–14) cm, subglabrous or sparsely short stipitate-glandular and, sometimes, sparsely long stipitate-glandular, longer hairs spreading to retrorse, white, tan, or brown;

blade ovate-cordate, ± as long as wide, (1–)2.3–8.5 × (1–)2.1–8 cm, margins shallowly (3-), 5-, 7-, or 9-lobed, doubly crenate-dentate, glabrous, apex of terminal lobe acute to obtuse, surfaces subglabrous or sparsely long stipitate-glandular;

cauline leaves usually absent, sometimes 1, proximal or distal, sessile or petiolate, blade 0.2–3 × 0.2–2.2 cm.

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(–4), remotely 6–25-flowered, 1–2 flowers per node, not secund, 8–48(–60) cm, glabrous, subglabrous, or sparsely short stipitate-glandular proximally, short stipitate-glandular distally.

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

1.5–5(–8) mm, short stipitate-glandular.

0.2–1.5 mm, short stipitate-glandular.

Flowers

hypanthium broadly saucer-shaped, (0.6–)0.8–2 × (1.7–)2–2.8 mm;

sepals spreading or recurved, greenish yellow or greenish, triangular to broadly triangular, 0.6–1.1 × 0.7–1.2 mm;

petals greenish, 5–11-lobed, 1.5–3 mm, lobes linear, lateral lobes spreading;

stamens 5, alternate sepals;

filaments white, 0.1–0.2 mm;

anthers 0.2–0.3 × 0.5–0.7 mm;

ovary ± completely inferior;

styles divergent, flattened, 0.1–0.2 mm;

stigmas 2-lobed.

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

reddish brown, 0.6–0.9 mm, pitted.

dark reddish brown or blackish, 0.8–1.4 mm, pitted.

2n

= 14.

= 14.

Mitella pentandra

Mitella diversifolia

Phenology Flowering May–Aug. Flowering May–Jul.
Habitat Moist woods, stream banks, avalanche tracks, wet mountain meadows, shaded banks Moist woods, stream banks
Elevation 1000-3700 m (3300-12100 ft) 500-2000 m (1600-6600 ft)
Distribution
from FNA
AK; CA; CO; ID; MT; NV; OR; SD; UT; WA; WY; AB; BC; YT
[WildflowerSearch map]
from FNA
CA; OR; WA
[WildflowerSearch map]
Discussion

Mitella diversifolia occurs from Klickitat County, Washington, south to El Dorado County, California.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 8, p. 111. FNA vol. 8, p. 113.
Parent taxa Saxifragaceae > Mitella Saxifragaceae > Mitella
Sibling taxa
M. breweri, M. caulescens, M. diphylla, M. diversifolia, M. nuda, M. ovalis, M. stauropetala, M. trifida
M. breweri, M. caulescens, M. diphylla, M. nuda, M. ovalis, M. pentandra, M. stauropetala, M. trifida
Synonyms Pectiantia pentandra Ozomelis diversifolia
Name authority Hooker: Bot. Mag. 56: plate 2933. 1829 , Greene: Pittonia 1: 32. 1887 ,
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