Jasione crispa, (Pourret) Samp.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 101

5. J. crispa (Pourret) Samp. , Ann. Sci. Acad. Polyt. Porto 14: 161 (1921).

More or less hairy perennial with a stout woody stock and usually short non-flowering shoots. Flowering stems 2-10(-40) cm, erect or ascending. Leaves linear-oblong to linearlanceolate or rarely obovate, usually flat, entire or remotely toothed, rather coriaceous; margin thick, strongly papillose, often ciliate. Outer involucral bracts lanceolate to ovate, entire to crenate-serrate or deeply and sharply serrate; margin thick, cartilaginous and strongly papillose. Calyx-teeth subulate to narrowly triangular, often purplish, glabrous to densely lanate. Corolla blue. Mountain rocks and screes; rarely on maritime sands. S. W.Europe. Ga Hs Lu.

1 Involucral bracts not imbricate (j) subsp. cavanillesii 1 Involucral bracts closely imbricate

2 Calyx-teeth glabrous

3 Leaves with very thick, white margins; bracts whitish

(e) subsp. serpentinica 3 Leaf-margins not very thick and white; bracts purplish

(a) subsp. amethystina 2 Calyx-teethciliate,villous or lanate

4 Involucral bracts whitish and membranous, at least in the basal half

5 Stems and leaves glabrous to softly hairy; leaves thin

(f) subsp. mariana 5 Stems and leaves hispidulous; leaves thick (g) subsp. maritima 4 Involucral bracts entirely herbaceous or coriaceous

6 Involucral bracts entire, or nearly entire (b) subsp. centralis 6 Involucral bracts crenate-serrate to serrate

7 Involucral bracts and upper part of stem lanate

(i) subsp. tomentosa 7 Involucral bracts and upper part of stem glabrous or thinly villous

8 Flowering stems usually 20-30 cm; plant laxly caespitose

(h) subsp. sessiliflora 8 Flowering stems usually 5-10 cm; plant ± densely caespi­

tose

9 Flowering stems very densely leafy; leaves c. 2 mm wide; involucral bracts usually green (c) subsp. arvemensis 9 Flowering stems rather sparsely leafy; leaves c. 1 mm wide

10 Stems crispate-villous near the apex; involucral bracts

ovate, usually purplish-blue (d) subsp. crispa 10 Stems usually glabrous or sparsely villous near the

apex; involucral bracts lanceolate to elliptical,

whitish (e) subsp. serpentinica