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Brewer's miterwort, Brewer's mitrewort

five-stamen mitrewort, fivestamen miterwort

Habit Plants not stoloniferous. Plants sometimes stoloniferous.
Flowering stems

8–25(–40) cm.

8–48(–60) cm.

Leaves

petiole 1.5–7.5(–12) cm, subglabrous or short stipitate-glandular and sparsely long stipitate-glandular, longer hairs spreading, reddish brown;

blade broadly cordate to reniform, usually shorter than, sometimes ± as long as wide, 1.5–7.9 × 1.5–11 cm, margins shallowly 7-, 9-, or 11-lobed, singly or doubly crenate-dentate, glabrous or irregularly ciliate, apex of terminal lobe rounded, surfaces glabrous or sparsely short stipitate-glandular and sparsely long stipitate-glandular;

cauline leaves absent.

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.

Inflorescences

1–2, densely (6–)20–40(–60)-flowered, 1–2(–3) flowers per node, not secund, 8–25(–40) cm, glabrous or sparsely arachnoid-pilose proximally, glandular-puberulent distally.

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.

Pedicels

1–2 mm, short stipitate-glandular.

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

Flowers

hypanthium broadly saucer-shaped, 0.8–1.6 × 2.5–3.5 mm;

sepals spreading, yellowish green or greenish, triangular to broadly triangular, 0.7–1 × 0.9–1.9 mm;

petals greenish yellow or greenish, (4–)7–11-lobed, 1.5–2 mm, lobes linear, lateral lobes spreading;

stamens 5, opposite sepals;

filaments white or greenish, 0.1–0.2 mm;

anthers 0.1–0.2 × 0.2–0.5 mm;

ovary nearly completely inferior;

styles divergent, flattened, 0.1–0.2 mm;

stigmas 2-lobed.

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.

Seeds

dark reddish brown or blackish, 0.8–1.2 mm, pitted.

reddish brown, 0.6–0.9 mm, pitted.

2n

= 14.

= 14.

Mitella breweri

Mitella pentandra

Phenology Flowering May–Sep. Flowering May–Aug.
Habitat Moist forests, glades, stream banks, meadows, open to wooded mountain slopes Moist woods, stream banks, avalanche tracks, wet mountain meadows, shaded banks
Elevation 500-3500 m (1600-11500 ft) 1000-3700 m (3300-12100 ft)
Distribution
from FNA
CA; ID; MT; NV; OR; WA; AB; BC
[WildflowerSearch map]
from FNA
AK; CA; CO; ID; MT; NV; OR; SD; UT; WA; WY; AB; BC; YT
[WildflowerSearch map]
Source FNA vol. 8, p. 112. FNA vol. 8, p. 111.
Parent taxa Saxifragaceae > Mitella Saxifragaceae > Mitella
Sibling taxa
M. caulescens, M. diphylla, M. diversifolia, M. nuda, M. ovalis, M. pentandra, M. stauropetala, M. trifida
M. breweri, M. caulescens, M. diphylla, M. diversifolia, M. nuda, M. ovalis, M. stauropetala, M. trifida
Synonyms Pectiantia breweri Pectiantia pentandra
Name authority A. Gray: Proc. Amer. Acad. Arts 6: 533. 1865 , Hooker: Bot. Mag. 56: plate 2933. 1829 ,
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