Saxifraga nelsoniana, D. Don Saxifraga rotundifolia, L. Saxifraga chrysosplenifolia, Boiss.

14. S. nelsoniana D. Don View in CoL , Trans. Linn. Soc. 13: 355 (1821)

( S. punctata auct., non L.).

Rhizome underground; leaves all basal, reniform, coarsely crenate, slightly fleshy, subglabrous; petiole long. Flowering stems 20-40 cm, glandular-hairy above, bearing a usually lax panicle of small flowers. Sepals deflexed; petals 3 mm, oblong, white or pale pink. Stamens often partly replaced by petaloid staminodes. N.E. Russia. Rs (N). (N. Asia and N. W. America.)

The European plant belongs to subsp. aestivalis (Fischer & C. A. Meyer) D. A. Webb , Feddes Repert. 69: 12 (1964).

15. S. rotundifolia L. View in CoL , Sp. Pl. 403 (1753) View Cited Treatment

(inch S. heucherifolia Griseb. & Schenk ).

Stem short, rhizomatous, bearing lax rosettes of reniform-orbicular, crenate or coarsely serrate leaves, usually somewhat hairy, with a very narrow but distinct cartilaginous border. Petiole long, slender, not enlarged at top. Flowering stems 15^40 cm, rather stout, with a few dentate or slightly lobed cauline leaves and a rather narrow panicle of numerous flowers. Sepals erecto-patent, even in fruit; petals 6-11 mm, narrowly oblong, with a distinct claw, white, usually spotted with yellow at the base and with red higher up. Styles very short, divergent. 2/2 = 22. Damp or shady places in or near the mountains o f C. & S. Europe. Al Au Bu Co Cr Cz G a Ge G r He Hs It Ju Rm Sa Si [Be].

Variable in size, hairiness and leaf-shape. The supposedly distinctive characters of S. heucherifolia Griseb. & Schenk , Acrh. Naturgesch. (Berlin), 18:317 (1852), from the E. Carpathians and Balkan peninsula (cauline leaves regularly dentate, not lobed; petals more than 9 mm), are scarcely constant enough for it to be recognized even as a subspecies.

16. S. chrysosplenifolia Boiss. View in CoL , Diagn. Pl. Or. Nov. 1 (3): 20 (1843).

Very like 15, but without a cartilaginous border to the leaves, and with the lamina of the basal leaves decurrent along the petiole, which is broadened at the top. 2//= 22. • S. part o f Balkan peninsula and Aegean region. Al Bu Cr G r Ju.

17. S. taygetea Boiss. & Heldr. View in CoL in Boiss., Diagn. Pl. Or. Nov. 2 (10): 19 (1849).

Like 15, but smaller (stem seldom 20 cm); basal leaves 15-25 mm wide, with 5-9 broad, shallow crenations, or rarely somewhat 5-lobed; cauline leaves few and small; petals c. 8 mm, narrowly oblong, white, spotted with red towards the base. Exposed mountain rocks. • Albania and Greece;?S. Italy (Monte Sirino). Al G r?It.