Saxifraga petraea, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 370

30. S. petraea L. , Sp. Pl. ed. 2, 578 (1762).

Biennial, perhaps rarely perennial, covered with soft, glandular hairs. Leaves of basal rosette petiolate, semicircular or rhombic in outline, divided almost to the base into numerous toothed lobes; cauline leaves much less deeply divided. Stems 10-20 cm, weak, often decumbent, with numerous, long, divaricate, interwoven branches, forming a very lax, wide, leafy panicle. Petals 8-10 mm, contiguous, sometimes slightly unequal, emarginate, white. Seeds papillose. Shady rocks; calcicole. • Southern foothills of the E. Alps. It Ju.

(e) Evergreen perennials without underground bulbils; leaves seldom lime-encrusted; hydathodes only at apices of leaf-segments (or absent); ovary semi-inferior.