Flora of North America species comparison

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Saxifraga nathorstii

east Greenland saxifrage
Habit Plants loosely mat-forming, not stoloniferous, rhizomatous, from caudex.
Leaves

cauline, (not imbricate), opposite (distalmost alternate);

petiole absent;

blade oblanceolate to elliptic, unlobed, 5–9 mm, fleshy, margins entire, ciliate, with 1(–3) lime-secreting hydathodes, apex obtuse, surfaces glabrous.
Inflorescences

solitary flowers, sometimes 2-flowered cymes, ebracteate, 3–4 cm, glabrate.
Flowers

sepals erect, ovate, margins ciliate, surfaces glabrous;

petals salmon to flesh colored, sometimes red or orange, rarely yellow, sometimes violet tinged, not spotted, obovate to oblanceolate, 12–15 mm, longer than sepals;

ovary to 1/4 inferior.
2n

= 52.

Saxifraga nathorstii
Phenology Flowering summer.
Habitat Arctic marshes, damp tundra, alluvial river beds, dessicated ponds, inland nunataks
Elevation 0-1200 m (0-3900 ft)
Distribution
from USDA
Greenland
[BONAP county map]
Discussion

Saxifraga nathorstii is known only from northeastern Greenland. T. W. Böcher (1941) showed cytologically that this species may be an allopolyploid that originated as a hybrid between S. oppositifolia and S. aizoides; morpho-logically, phenologically, and ecologically, it is intermediate between the two species (see also T. J. Sørensen 1933).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 136.
Parent taxa Saxifragaceae > Saxifraga
Sibling taxa
S. adscendens, S. aizoides, S. aleutica, S. bracteata, S. bronchialis, S. cernua, S. cespitosa, S. cherlerioides, S. chrysantha, S. debilis, S. eschscholtzii, S. flagellaris, S. hirculus, S. hyperborea, S. mertensiana, S. oppositifolia, S. paniculata, S. radiata, S. rivularis, S. serpyllifolia, S. taylorii, S. tricuspidata, S. tridactylites, S. vespertina
Synonyms S. oppositifolia var. nathorstii
Name authority (Dusén) Hayek: Denkschr. Kaiserl. Akad. Wiss., Wein. Math.-Naturwiss. Kl. 77: 661. 1905 (as nathorsti),
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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