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tiny swamp saxifrage, western swamp saxifrage

leafy stem saxifrage, naked-bulbil small-flower-saxifrage, saxifrage à bulbilles

Habit Plants solitary or in clusters, with bulbils on caudices, or short-rhizomatous. Plants solitary or tufted, with bulbils on caudices.
Leaves

basal;

petiole flattened, 0.5–3 cm;

blade ± ovate, 2–5 cm, ± fleshy, base attenuate, margins entire or crenulate, eciliate, surfaces hairy.

basal;

petiole ± absent;

blade oblanceolate, 6–15(–30) cm, ± fleshy, base cuneate, margins subentire, sometimes 1–3-toothed distally, eciliate or sparsely ciliate, surfaces glabrate.

Inflorescences

10–25-flowered, congested, glomerate thyrses, 4–15 cm, pink- to purple-tipped stipitate-glandular (hairs uniseriate).

2(–5+)-flowered, (proximal flowers replaced by bulbils), narrow, branched, sometimes ± open, cylindric thyrses, sometimes solitary flowers, 5–15 cm, glabrous or sparsely purple-tipped stipitate-glandular. (Pedicels erect to ascending.) Flowers: sepals reflexed, lanceolate;

petals white, each with 1–2 basal yellow spots, lanceolate, clawed, 3–8 mm, longer than sepals;

filaments linear, flattened;

pistils connate 1/2+ their lengths;

ovary superior, (to 1/3 adnate to hypanthium).

Flowers

sepals erect to ascending, ovate;

petals absent, sometimes 1–5, white to greenish white, not spotted, linear to oblong, clawed, 1–2 mm, much shorter than sepals;

filaments linear, flattened;

pistils connate to 1/2 their lengths;

ovary 1/2+ inferior.

Capsules

reddish or purplish, folliclelike.

green to purplish, valvate.

2n

= 38.

= 56.

Micranthes apetala

Micranthes foliolosa

Phenology Flowering early spring–summer. Flowering late summer.
Habitat Vernally moist meadows, wet depressions on mountain slopes Mossy tundra near streams and flushes, wet, rocky slopes, snowbeds
Elevation 600-2800 m (2000-9200 ft) 0-1800 m (0-5900 ft)
Distribution
from FNA
ID; MT; OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; CO; ME; NL; NT; NU; QC; YT; Greenland; n Europe; n Asia
[BONAP county map]
Source FNA vol. 8, p. 68. FNA vol. 8, p. 57.
Parent taxa Saxifragaceae > Micranthes Saxifragaceae > Micranthes
Sibling taxa
M. aprica, M. bryophora, M. californica, M. calycina, M. careyana, M. caroliniana, M. eriophora, M. ferruginea, M. foliolosa, M. fragosa, M. gaspensis, M. gormanii, M. hieraciifolia, M. hitchcockiana, M. howellii, M. idahoensis, M. integrifolia, M. lyallii, M. marshallii, M. micranthidifolia, M. nelsoniana, M. nidifica, M. nivalis, M. nudicaulis, M. occidentalis, M. odontoloma, M. oregana, M. palmeri, M. pensylvanica, M. petiolaris, M. razshivinii, M. reflexa, M. rhomboidea, M. rufidula, M. spicata, M. stellaris, M. subapetala, M. tempestiva, M. tenuis, M. texana, M. tischii, M. tolmiei, M. unalaschcensis, M. virginiensis
M. apetala, M. aprica, M. bryophora, M. californica, M. calycina, M. careyana, M. caroliniana, M. eriophora, M. ferruginea, M. fragosa, M. gaspensis, M. gormanii, M. hieraciifolia, M. hitchcockiana, M. howellii, M. idahoensis, M. integrifolia, M. lyallii, M. marshallii, M. micranthidifolia, M. nelsoniana, M. nidifica, M. nivalis, M. nudicaulis, M. occidentalis, M. odontoloma, M. oregana, M. palmeri, M. pensylvanica, M. petiolaris, M. razshivinii, M. reflexa, M. rhomboidea, M. rufidula, M. spicata, M. stellaris, M. subapetala, M. tempestiva, M. tenuis, M. texana, M. tischii, M. tolmiei, M. unalaschcensis, M. virginiensis
Synonyms Saxifraga apetala, Saxifraga integrifolia var. apetala Saxifraga foliolosa, Saxifraga foliolosa var. multiflora, Saxifraga stellaris subsp. comosa, Saxifraga stellaris var. comosa
Name authority (Piper) Small: in N. L. Britton et al., N. Amer. Fl. 22: 135. 1905 , (R. Brown) Gornall: J. Bot. Res. Inst. Texas 1: 1020. 2007 ,
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