The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Saddle Mountain saxifrage

eastern swamp saxifrage, marsh saxifrage, Pennsylvania saxifrage, swamp small-flower-saxifrage

Habit Plants solitary or in clumps, short-rhizomatous. Plants solitary or in groups, with thick, fleshy rhizomes. Plants solitary or in clusters, stoloniferous, rhizomatous.
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 indistinct, flattened, 3–10 cm;

blade linear or elliptic to ovate, 6–25 cm, fleshy, base attenuate, margins entire or subentire, ciliate, surfaces usually densely short-hairy, often tangled brown-hairy along proximal midveins.

basal;

petiole rounded, 0.5–3.5 cm, (base expanded, stipulelike);

blade somewhat reniform, (± evenly lobed), 0.5–2.5 cm, ± fleshy, base cordate to truncate, margins entire, sparsely glandular-ciliate, surfaces glabrous.

Inflorescences

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

(30–)50+-flowered, open, often lax thyrses, 25–125 cm, purple-tipped stipitate-glandular.

5–20-flowered, branched cymes or flat-topped thyrses, 5–16 cm, sparsely purple-tipped stipitate-glandular.

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 reflexed, triangular to ovate;

petals white to cream or rarely purple, not spotted, linear to narrowly elliptic, not clawed or slightly clawed, 2–3 mm, longer than sepals;

filaments linear, flattened;

pistils connate to 1/2 their lengths;

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

sepals reflexed or, sometimes, spreading, triangular;

petals white to cream (rarely pink), not spotted, broadly elliptic to ovate, short-clawed, 4–5 mm, longer than sepals;

filaments linear, flattened;

pistils connate 1/2+ their lengths;

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

Capsules

greenish to reddish purple, folliclelike.

green, folliclelike.

dark purple-black, valvate.

2n

= 76.

= 56, 84, 112.

= 40.

Micranthes hitchcockiana

Micranthes pensylvanica

Micranthes nudicaulis

Phenology Flowering late spring–summer. Flowering spring. Flowering summer.
Habitat Wet rocks and ledges on mountain-top balds Marshy meadows, mucky seepages in woods, swamp forests, montane bogs and seeps Wet flushes, stream banks
Elevation 600-1100 m [2000-3600 ft] 100-1400 m [300-4600 ft] 0-800 m [0-2600 ft]
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.)

Purple-petalled populations of Micranthes pensylvanica have been known as Saxifraga purpuripetala and are found in Maine, New York, Pennsylvania, and Vermont.

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

Distribution
from FNA
OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CT; DE; IA; IL; IN; KY; MA; MD; ME; MI; MN; MO; NC; NH; NJ; NY; OH; PA; RI; TN; VA; VT; WI; WV; MB; ON; SK
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; e Asia (Russian Far East)
[BONAP county map]
Parent taxa 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. nidifica, M. nivalis, M. nudicaulis, M. occidentalis, M. odontoloma, M. oregana, M. palmeri, 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. 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 hitchcockiana Saxifraga pensylvanica, M. pensylvanica var. purpuripetala, Saxifraga forbesii, Saxifraga pensylvanica var. forbesii, Saxifraga pensylvanica subsp. interior, Saxifraga pensylvanica var. purpuripetala, Saxifraga pensylvanica subsp. tenuirostrata, Saxifraga purpuripetala Saxifraga nudicaulis
Name authority (Elvander) Brouillet & Gornall: Novon 18: 138. 2008 , (Linnaeus) Haworth: Saxifrag. Enum., 45. (1821) (D. Don) Gornall & H. Ohba: J. Bot. Res. Inst. Texas 1: 1021. (2007)
Source Flora of North America vol. 8, p. 70. Flora of North America vol. 8, p. 67. Flora of North America vol. 8, p. 59.
Web links