Helianthemum oelandicum, (L.) DC.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 289

22. H. oelandicum (L.) DC. in Lam. & DC., Fl. Fr. ed. 3, 4: 817 (1805)

(77. montanum sensu Willk. ).

Laxly or densely caespitose dwarf shrub up to 20 cm. Leaves elliptical to linearlanceolate, acute or obtuse, green on both surfaces, glabrous or with simple or fasciculate but not stellate hairs. Flowers few or many, in simple or branched cymes; petals yellow. Scattered over much of Europe, but absent from most of the north and most of the islands. Al Au Cz Ga Ge G r He Hs It Ju Lu Po Rm Rs (N, C, W, K, E) Su.

Polymorphic, and divisible into at least five fairly clearly delimited subspecies:

1 Lax; cymes 6- to 20-flowered, often produced on lateral branches of the current year’s growth; petals 3-6 mm

(d) subsp. italicum 1 Caespitose; cymes 2- to 10-flowered, usually produced from the apex of the previous year’s growth; petals 5-10 mm 2 Procumbent and intricately branched; leaves glabrous or subglabrous; sepals subglabrous (a) subsp. oelandicum 2 Compact; leaves pubescent; sepals long-pubescent 3 Hairs on sepals ± patent (e) subsp. orientale 3 Hairs on sepals mainly ± appressed 4 Leaves oblong-elliptical to oblong-linear, obtuse; petals

7-10 mm (b) subsp. alpestre 4 Leaves lanceolate, usually acute; petals 5-9 mm

(c) subsp. rupifragum