Peucedanum L.

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 : 360-361

90. Peucedanum L. 2

Leaves several times pinnate or ternate. Sepals absent or conspicuous. Petals white, yellow or rarely pink or purplish, broadly ovate; apex long, inflexed. Fruit strongly compressed dorsally. Lateral ridges winged; wings closely appressed to one another; dorsal ridges usually prominent; vittae 1-3.

1 Cauline leaves absent 29. alpinum 1 Cauline leaves present, the upper sometimes reduced to sheathlike petioles 2 Lobes of at least the lower leaves linear or narrowly lanceolate, never serrate and usually unlobed; leaves never simply pinnate 3 Stock without fibres; bracts 4-7, persistent 23. lancifolium 3 Stock with fibres; bracts absent or few, usually caducous 4 Leaves with at least 5 primary divisions 5 Lobes of lower leaves narrowly linear; fruit 3-5 mm

10. oligophyllum 5 Lobes of lower leaves linear-lanceolate; fruit 6-7-5 mm

13. schottii 4 Leaves with 3 primary divisions 6 Petals white or pink *

7 Lower leaves 3- to 4-ternate; rays 10-20: bracts usually

2-6, caducous 7. gallicum

7 Lower leaves 1- to 2-temate; rays 5-10; bracts 0(-l)

8. aragonense 6 Petals yellow

8 Fruit i—J as long as pedicel

9 Leaf-lobes linear, flat, or with slightly recurved margins

1. officinale

9 Leaf-lobes filiform, canaliculate 6. paniculatum

8 Fruit about as long as pedicel

10 Distinct intermediate veins present in the leaf-lobes;

leaves 2- to 3-ternate

11 Leaves (2-)3-ternate; intermediate veins conspicuous particularly in the middle of the leaf-lobe; rays very unequal, the longest 3-4 cm 5. rochelianum

11 Leaves 2-ternate; intermediate veins usually conspicuous at the base of leaf-lobe; rays nearly equal,

not more than 2-5 cm 9. coriaceum

10 No distinct intermediate veins in leaf-lobes; leaves 3-

to 6-ternate

12 Leaf-lobes 0-5(—1) mm wide, filiform; fruit 7-9 mm

2. longifolium

12 Leaf-lobes 1-3 mm wide, linear; fruit 4-7-5 mm

13 Leaves 4- to 6-ternate; lobes 10-45 mm; fruit

4-5(-6) mm 3. tauricum

13 Leaves 3- to 4-ternate; lobes 20-90 mm; fruit

6-7-5 mm 4. ruthenicum 2 Lobes of at least the lower leaves ovate or oblong in outline,

dentate or lobed, or leaves simply pinnate 14 Leaf-lobes ovate, dentate, sometimes with 1-3 broad, dentate lobes 15 Bracts several, persistent; stock usually with fibres 16 Leaves 2-temate; stock stout, with slender, far-creeping rhizome; bracts erecto-patent 17. aegopodioides 16 Leaves 1- to 3-pinnate; stock without slender, farcreeping rhizome; bracts deflexed

17 Leaves 2- to 3-pinnate 25. cervaria

17 Leaves 1-pinnate 18. latifolium 15 Bracts 0-2, caducous; stock without fibres 18 Stem solid; leaves simply pinnate and often 3-foliolate

28. hispanicum 18 Stem hollow; at least some leaves 2-temate or 2- to 3-

pinnate

19 Stem 30-100 cm, simple or with alternate branches;

petioles of upper cauline leaves strongly inflated;

fruit 4-5 mm 26. ostruthium

19 Stem 120-360 cm; upper branches opposite or whorled;

petioles of cauline leaves rather narrow; fruit 7-9 mm

27. verticillare 14 Leaf-lobes ovate to oblong in outline, but ±pinnatifid;

ultimate lobes entire or nearly so 20 Bracts 0, or few and caducous; upper leaves usually simply pinnate, with entire segments 21 Rays scabrid-puberulent on inner side 12. carvifolia 21 Rays smooth and glabrous on inner side

22 Stem distinctly sulcate, at least above 13. schottii

22 Stem terete and finely striate throughout

23 Stem c. 30 cm; petals white 11. achaicum

23 Stem up to 200 cm; petals yellow or yellowish

24 Lower leaves oblong in outline, 2-pinnate

14. vittijugum

24 Lower leaves triangular in outline, 3- to 4-pinnate

16. arenarium 20 Bracts several, persistent 25 Bracts deflexed

26 Stock with fibres; stalks of primary and secondary divisions of leaves patent or deflexed 22. oreoselinum

26 Stock without fibres; stalks of primary and secondary divisons of leaves erecto-patent

27 Stem hollow; wing of ripe fruit less than 1 mm wide

24. palustre

27 Stem solid; wing of ripe fruit at least 1-5 mm wide

21. austriacum 25 Bracts patent or appressed to rays

28 Rays 5-6, stout 15. obtusifolium

28 Rays (6-)10-25, slender

29 Rays glabrous; sepals at anthesis narrow; petals dull yellow; styles c. 1 mm 19. alsaticum

29 Rays puberulent; sepals at anthesis almost ovate;

petals white; styles at least 1-5 mm 20. venetum