Saxifraga nathorstii

(Dusén) Hayek

Denkschr. Kaiserl. Akad. Wiss., Wein. Math.-Naturwiss. Kl. 77: 661. 1905 (as nathorsti),.

Endemic
Basionym: Saxifraga oppositifolia var. nathorstii Dusén Bot. Not. 1901: 76. 1901 (as nathorsti)
Treatment appears in FNA Volume 8. Treatment on page 136. Mentioned on page 132, 133, 135.

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.


Phenology: Flowering summer.
Habitat: Arctic marshes, damp tundra, alluvial river beds, dessicated ponds, inland nunataks
Elevation: 0-1200 m

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).

Selected References

None.

Lower Taxa

None.
... more about "Saxifraga nathorstii"
Luc Brouillet +  and Patrick E. Elvander† +
(Dusén) Hayek +
Saxifraga oppositifolia var. nathorstii +
Greenland. +
0-1200 m +
Arctic marshes, damp tundra, alluvial river beds, dessicated ponds, inland nunataks +
Flowering summer. +
Denkschr. Kaiserl. Akad. Wiss., Wein. Math.-Naturwiss. Kl. +
Saxifraga nathorstii +
Saxifraga +
species +