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Saddle Mountain saxifrage

Columbia saxifrage, meadow saxifrage, nesting saxifrage, peak saxifrage, swamp saxifrage

Gorman's saxifrage

Yukon saxifrage

Habit Plants solitary or in clumps, short-rhizomatous. Plants solitary or in clumps, with bulbils on caudices. Plants in groups or, sometimes, almost mat-forming, rhizomatous. Plants solitary or tufted, with bulbils on caudices.
Leaves

basal;

petiole often indistinct, flattened, 5–50 mm;

blade elliptic to obovate, 4–12 cm, slightly fleshy, base cuneate, margins serrate to dentate, densely ciliate, surfaces densely tangled-hairy.

basal;

petiole flattened, 1.5–5.5 cm;

blade ± ovate to elliptic, 3–6(–7.5) cm, fleshy, base attenuate, margins entire or minutely denticulate, ciliate, surfaces glabrate to sparsely hairy.

basal;

petiole flattened, 5–7.5 cm;

blade ovate to elliptic, 3–4 cm, fleshy, base attenuate, margins shallowly crenate-serrate, sparsely ciliate, surfaces tangled, reddish brown-hairy.

basal;

petiole broadly flattened, 1–2 cm;

blade elliptic to broadly ovate, 1–3 cm, fleshy, base attenuate, margins shallowly serrate (teeth to 1 mm), densely ciliate, surfaces tangled reddish brown-hairy.

Inflorescences

70+-flowered, open, lax, flat-topped thyrses, 15–35 cm, tangled, yellow-tipped stipitate-glandular.

30+-flowered, lax, cylindric thyrses with 3–10, ± compact cymules, 10–30 cm, ± densely pink- to purple-tipped stipitate-glandular.

(10–)30+-flowered, open, lax, strongly divaricately branched, conic thyrses, 8–30 cm, purple-tipped stipitate-glandular; (bracts glabrous, proximal marginally ciliate).

15+-flowered thyrses with flowers crowded at branch tips, 7–60 cm, ± hairy, also with some purple-tipped glandular hairs.

Flowers

sepals reflexed, elliptic to ovate;

petals white, not spotted, elliptic, clawed, 2–5 mm, longer than sepals;

filaments linear, flattened;

pistils connate to 1/2 their lengths;

ovary 1/2 inferior, appearing more superior in fruit.

sepals strongly reflexed, broadly ovate to deltate;

petals white to greenish white, not spotted, usually elliptic to obovate, clawed, 1–1.9 mm, equaling or shorter than sepals;

filaments linear, flattened;

pistils connate to 1/2 their lengths;

ovary 1/2+ inferior.

sepals ascending, ovate to oblong, (margins eciliate, surfaces glabrous);

petals white, not spotted, obovate to ± round, clawed, ca. 2 mm, ca. 1.5 times as long as sepals;

filaments linear, flattened;

pistils distinct almost to base;

ovary nearly 1/3 inferior, (to 1/3 adnate to hypanthium).

sepals reflexed, ovate to triangular;

petals white, with 2 basal yellow spots (spots distinct even in dried material), elliptic to spatulate, clawed, 2–4 mm, longer than sepals;

filaments strongly club-shaped, (longer than petals);

pistils distinct almost to base;

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

Capsules

greenish to reddish purple, folliclelike.

green or reddish purple, folliclelike.

greenish to reddish purple, folliclelike.

green to purplish, folliclelike.

2n

= 76.

= 38.

= 20, 38, 40.

= 20, 40.

Micranthes hitchcockiana

Micranthes nidifica

Micranthes gormanii

Micranthes reflexa

Phenology Flowering late spring–summer. Flowering spring–summer. Flowering spring. Flowering late spring–summer.
Habitat Wet rocks and ledges on mountain-top balds Open meadows, shrub-lands, gravelly slopes, edges of and open pine forests Wet, rocky ledges and slopes Heath, tundra, dry to mesic meadows, alpine gravelly slopes and fellfields, open woods
Elevation 600-1100 m [2000-3600 ft] 100-2600 m [300-8500 ft] 0-1000 m [0-3300 ft] 0-1800 m [0-5900 ft]
Distribution
from FNA
OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; ID; MT; NV; OR; UT; WA; WY; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; BC; NT; YT
[BONAP county map]
Discussion

Of conservation concern.

Micranthes hitchcockiana may have originated from hybridization between M. rufidula and M. oregana (P. E. Elvander 1984; W. E. Perkins 1978).

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

Micranthes nidifica is polymorphic and merges to some extent with M. fragosa in limited areas of southern Washington and northern Oregon.

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

Micranthes idahoensis, M. marshallii, and M. reflexa form a morphological complex of ecologically and geographically distinct entities in western North America that is much in need of study. The eastern North American M. careyana and M. caroliniana are also morphologically similar to the members of this complex.

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

Source FNA vol. 8, p. 70. FNA vol. 8, p. 68. FNA vol. 8, p. 62. FNA vol. 8, p. 63.
Parent taxa Saxifragaceae > Micranthes Saxifragaceae > Micranthes Saxifragaceae > Micranthes Saxifragaceae > Micranthes
Sibling taxa
M. apetala, 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. 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. 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. 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. foliolosa, M. fragosa, M. gaspensis, 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. 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. 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 hitchcockiana Saxifraga nidifica, M. plantaginea, Saxifraga columbiana, Saxifraga integrifolia var. columbiana, Saxifraga integrifolia var. leptopetala, Saxifraga montana, Saxifraga plantaginea Saxifraga gormanii, Saxifraga occidentalis var. dentata Saxifraga reflexa
Name authority (Elvander) Brouillet & Gornall: Novon 18: 138. 2008 , (Greene) Small: in N. L. Britton et al., N. Amer. Fl. 22: 134. (1905) (Suksdorf) Brouillet & Gornall: J. Bot. Res. Inst. Texas 1: 1020. 2007 , (Hooker) Small: in N. L. Britton et al., N. Amer. Fl. 22: 146. (1905)
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