All Floras      Advanced Search
FNA Vol. 8 Page 132, 133, 135, 136 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 8 | Saxifragaceae | Saxifraga

2. Saxifraga nathorstii (Dusén) Hayek, Denkschr. Kaiserl. Akad. Wiss., Wein. Math.-Naturwiss. Kl. 77: 661. 1905.

Saxifraga oppositifolia Linnaeus var. nathorstii Dusén, Bot. Not. 1901: 76. 1901 (as nathorsti)

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.

Flowering summer. Arctic marshes, damp tundra, alluvial river beds, dessicated ponds, inland nunataks; 0-1200 m; Greenland.

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).


Related Objects  
  • Distribution Map
  • Map

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |