Jasione L.

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 : 100

13. Jasione L. 1

Annual, biennial or perennial herbs. Flowers small, sessile to shortly pedicellate, not subtended by bracts, in capitula surrounded by 1 or more rows of involucral bracts. Calyx 5-toothed. Corolla splitting into 5 linear-lanceolate lobes from the base towards the apex. Stamens 5; filaments subulate; anthers usually connate at base. Style hairy in upper half; stigmas 2. Capsule dehiscing by 2 short, apical valves.

Descriptions of leaves refer to those on the flowering stems.

1 Basal leaves much longer than the cauline 9. foliosa

1 Basal leaves not or little longer than the cauline

2 Calyx-teeth villous, lanate or ciliate 3 Perennial, with stout stock and non-flowering shoots 5. crispa 3 Annual, with slender root and no non-flowering shoots

4 Stems leafless in upper half 1. montana

4 Stems leafy almost to apex

5 Stems erect, usually branched near apex; calyx-teeth subulate, villous throughout 3. corymbosa

5 Stems decumbent, unbranched; calyx-teeth linear-spathulate, villous near apex only 2. penicillata

2 Calyx-teethglabrous,notciliate 6 Outer involucral bracts entire or shallowly toothed 7 Perennial; margin of leaves and involucral bracts strongly thickened and papillose

8 Longest leaves at least 20 mm; pedicels at least twice as long as ovary 6. laevis

8 Longest leaves not more than 10 mm; pedicels shorter than ovary

9 Stems usually 2-10 cm; calyx-teeth subulate 5. crispa

9 Stems usually 20-70 cm; calyx-teeth linear-lanceolate

4. lusitanica

7 Annual or biennial; margin of leaves and involucral bracts not or weakly papillose

10 Stem usually leafless in upper half; involucral bracts shorter than the flowers 1. montana

10 Stem leafy almost to apex; involucral bracts at least as long as the flowers 3. corymbosa

6 Outer involucral bracts deeply toothed; teeth aristate 11 Leaves glabrous and not ciliate 7. bulgarica 11 Leaves villous or ciliate 12 Outer involucral bracts lanceolate 8. heldreichii

12 Outer involucral bracts ovate, suborbicular or broadly triangular

13 Perennial, with non-flowering shoots; leaves not undulate 6. laevis

13 Annual or biennial, without non-flowering shoots; leaves undulate 1. montana