Saxifraga hirculus


Sp. Pl. 1: 402. 1753 ,.

Common names: Yellow marsh saxifrage saxifrage oeil-de-bouc
Synonyms: Hirculus prorepens (Fischer ex Sternberg) Á. Löve & D. Löve Leptasea hirculus (Linnaeus) Small Saxifraga hirculus subsp. coloradensis Hedberg Saxifraga hirculus subsp. compacta Hedberg Saxifraga hirculus subsp. propinqua (R. Brown) Á. Löve & D. Löve Saxifraga hirculus var. propinqua (R. Brown) Simmons
Treatment appears in FNA Volume 8. Treatment on page 138. Mentioned on page 135.

Plants loosely tufted, not stoloniferous or sometimes shortly so, rhizomatous, caudex present or not. Leaves basal and cauline, (distal clasping); petiole absent on distal leaves, otherwise ± flattened, 3–20(–35) mm; blade linear or linear-oblanceolate to spatulate, unlobed, (5–)10–30 mm, thin to slightly fleshy, margins entire, eciliate or sparsely reddish brown-ciliate, (with apical nonsecreting hydathode), apex acuminate or acute, surfaces glabrous or sparsely reddish brown-villous. Inflorescences 2(–4)-flowered cymes, sometimes solitary flowers, (flowers initially nodding), 4–30(–35) cm, sparsely to ± densely reddish brown-villous; bracts sessile. Flowers: sepals ascending to spreading, reflexed in fruit, (sometimes purplish), triangular, margins reddish brown-ciliate, surfaces glabrous (rarely reddish brown-hairy); petals yellow, often drying cream, often proximally orange-spotted, elliptic to oblong or obovate, 6–18 mm, 2+ times longer than sepals; ovary superior. 2n = 16, 24, 32.

Phenology: Flowering summer.
Habitat: Wet, usually mossy, arctic or alpine tundra, wet alpine meadows
Elevation: 0-4000 m


V8 270-distribution-map.gif

Greenland, B.C., Man., N.W.T., Nunavut, Ont., Que., Yukon, Alaska, Colo., Mont., N.Mex., Utah, Eurasia, Atlantic Islands (Iceland, Spitsbergen).


On the basis of a morphologic and cytologic study, O. Hedberg (1992) recognized four subspecies in Saxifraga hirculus: subsp. propinqua (2n = 16, 24), nearctic (Labrador and northwestern Greenland to Alaska); subsp. coloradoensis (2n = 16), Colorado; subsp. hirculus (2n = 32), circumboreal (Ontario to Alaska in North America); and subsp. compacta (2n = 32), mostly Arctic Eurasia, Atlantic Islands (Iceland, Spitsbergen), eastern Greenland, and Alaska. Nonetheless, we are not recognizing subspecies (see also P. K. Holmgren and N. H. Holmgren 1997); further research is needed to determine their validity.

Selected References


Lower Taxa

... more about "Saxifraga hirculus"
Luc Brouillet +  and Patrick E. Elvander† +
Linnaeus +
Yellow marsh saxifrage +  and saxifrage oeil-de-bouc +
Greenland +, B.C. +, Man. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Yukon +, Alaska +, Colo. +, Mont. +, N.Mex. +, Utah +, Eurasia +, Atlantic Islands (Iceland +  and Spitsbergen). +
0-4000 m +
Wet, usually mossy, arctic or alpine tundra, wet alpine meadows +
Flowering summer. +
Illustrated +
Hirculus prorepens +, Leptasea hirculus +, Saxifraga hirculus subsp. coloradensis +, Saxifraga hirculus subsp. compacta +, Saxifraga hirculus subsp. propinqua +  and Saxifraga hirculus var. propinqua +
Saxifraga hirculus +
Saxifraga +
species +