Diplotaxis DC.

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 : 334-335

87. Diplotaxis DC. 2

Annual to perennial herbs. Leaves entire to pinnatipartite. Sepals erecto-patent; petals clawed, white, veined with violet, yellow or pink. Gynophore usually short. Fruit an elongate, linear siliqua with a short beak; valves compressed, with a prominent median vein. Seeds in 2 rows in each loculus, ovoid or rounded. (Inch Pendulina Willk. )

Literature: O. E. Schulz in Engler, Pflanzenreich 70 (IV. 105): 149-80 (1919). R. Nègre, Mém. Soc. Sci. Nat. Phys. Maroc Bot. nov. ser., no. 1 (1960).

1 Mature siliqua pendent; gynophore 2-5-7 mm, conspicuous, 3. crassifolia

1 Mature siliqua erecto-patent or rarely patent; gynophore less

than 2 mm

2 Petals white, violet-veined or violet after anthesis 6. erucoides

2 Petals yellow, sometimes violet-veined

3 Petals3- 4 mm; outerstamenssterile 8. viminea 3 Petalsat least4- 5mm; outerstamensfertile 4 Leaves almost all basal, rosulate 5 Stems densely setose-hispid below 7. virgata

5 Stems glabrous or sparsely hispid below

6 Leaves pinnatipartite or pinnatisect; gynophore 1 mm

5. cretacea

6 Leaves lyrate-pinnatifid or sinuate-dentate; gynophore 0

9. muralis

4 Stems and branches more or less leafy 7 Perennial, suffruticose at base, leaves glaucous, more or less fleshy, foetid when crushed 4. tenuifolia

7 Annual or biennial, herbaceous; leaves green, thin or membranous

8 Basal rosette present 9. muralis

8 Basal rosette absent

9 Stems densely setose-hispid below; basal leaves pinnatilobed or pinnatipartite with shallowly and irregularly denticulate segments; style less than 1 mm 7. virgata

9 Stems glabrous to hispid; basal leaves pinnatipartite with the segments laciniate-dentate, or bipinnati-

partite; style 1 mm or more

10 Leaves glabrous or sparsely hispid at the margin;

segments all ± equal, divided into linear or lanceolate lobes 1. catholica

10 Leaves with short conical hairs on both surfaces;

segments unequal; with the terminal much larger than the laterals, ± entire or dentate 2. siifolia