Cakile maritima, Scop.

1. C. maritima Scop. , FI. Cam. ed. 2, 2: 35 (1772).

Plant 15- 60 cm. Leaves variable. Petals 4-14 mm. Silicula 10-25 mm; lower segment with 2 lateral, more or less deflexed projections at the apex; upper segment expanding into a broad membranous margin at the base. Coasts of Europe northwards to c. 65° N. in Finland and Norway. Al BI Br Bu Co Cr Da?Fa Fe Ga Ge Gr Hb Ho Hs It Ju Lu No Po Rm Rs (N, B, C, W, K, E) Sa Si Su Tu [Cz].

A variable species divisible into at least 4 subspecies in Europe. Characters of the fruit appear to be the most reliable for distinguishing the subspecies.

1 Lower segment of the silicula ± concave at the apex (when viewed in the plane of the projections)

2 Lowersegment ofthesiliculawithconspicuous,deflexed pro­ jections (often more than 1 mm); leavesentire to pinnatisect,

the primary segments rarely more than 6 times as long as wide (c) subsp. aegyptiaca 2 Lower segment of the silicula with very small projections; leaves 1 - to 2-pinnatisect, the primary segments up to 15 times as long as wide (d) subsp. euxina 1 Lower segment of the silicula not concave

3 Lower segment of the silicula with very small projections; leaves entire to pinnatisect, the primary segments not more than 5 times as long as wide (a) subsp. maritima 3 Lowersegmentofthesiliculawithconspicuousdeflexedpro­ jections (often more than 1 mm); leaves 1 - to 2-pinnatisect,

the primary segments 10-20 times as long as wide

(b) subsp. baltica