CRUCIFER^ 73 



Rocks in the calcareous and lower Alps up to 6000 feet. June 

 to July. 



Distribution. — Jura; Central and Western Alps. 



Nasturtium R.Br. 



Capsule not more than 3 times as long as broad, long-stalked, 

 and usually curved. Flowers small, white or yellow. Sepals equal, 

 spreading. Leaves pinnatifid. 



Glabrous annuals or perennials, widely spread over the whole 

 area of the family (Cruciferae). 



Nasturtium pyrenaicum R.Br. 



Stem 6-12 inches. Root-leaves long-stalked, oval, simple, or 

 auricled ; lower stem-leaves lyrate, the upper ones deeply pinnatifid. 

 Petals yellow, nearly twice as long as the sepals. Siliqua one third 

 the length of its pedicel. 



Damp, sandyfplaces from the plains up to 5500 feet, very local. 

 May to August. 



Distribution.— Central and southern Europe, Pyrenees, Switzer- 

 land, Vosges, Valley of Elbe, Baden, Alsace, widely spread in France 

 except in the north. 



Cardamine L. 



Annual or perennial herbs, usually glabrous. Leaves pinnate or, 

 if undivided, on long stalks. Flowers white or pink. Stigma 

 capitate or small. Pod narrow-linear ; the valves flat, without any 

 conspicuous midrifc. 



A large genus, widely spread • over the temperate and colder 

 regions of both northern and southern hemispheres. 



Cardamine trifolia L. 



Rootstock slender, stoloniferous, knotted. Stem slender, naked 

 or with one small leaf. Leaves temate ; leaflets rounded, petioled 

 almost equal, thick, shining, crenate. Flowers white. Anthers 

 yeUow. Fruiting-spike short, erect. Plant with creeping runners. 



Damp and shady places in lower mountains. April to June. 



Distribution. — ^Eastem Alps, Bavaria, Bohemia, Silesia ; Central 

 Europe from the Jura to Italy, and Transylvania. Very local in 

 Switzerland (Chasseral, Bex, etc.), and in France only known from 

 Mont Pouillerel in the Jura. 



On rockeries it is easily grown in shady places and, owing to its 

 creeping habit, it soon covers a large area, and must be kept in 

 check. 



Cardamine asarifolia L. 



A glabrous, bright green plant. Stem leafy, i-ij feet high. 

 Leaves all simple, cordate-orbicular, coarsely dentate, shining. 



