28 THE FLORA OF THE ALPS 



Tribe Cameline^. — Silicule short, dehiscent, pyriform 

 or turbinate ; seeds in 2 rows. 



26. Camelina, Crntz. 



Flowers yellow ; leaves auricled. Not alpine. 



C. sativa, Fr., Gold of Pleasure ; C. fceiiday Fr. ; and 

 C.syhestris, Fr. ; are weeds, chiefly among flax, in Southern 

 Switzerland and Pyrenees. 



Tribe LepidinEtE. — Seed-vessel short (silicule), dehis- 

 cent, and compressed at right angles to the septum ; radicle 

 incumbent ; flowers white. Genera 27-29. 



27. Capsella, Mcench. 



Valves of silicule boat-shaped, keeled ; seeds numerous ; 

 flowers small. 



C. btirsa-pastoris, Mcench., Shepherd's Purse ; every- 

 where. C. pauciflora, Koch ; lower leaves 3-cleft, upper 

 lanceolate, undivided, raceme 3-6 flowered ; Switzerland, 

 Tirol, rare. C. rubella, Reut. ; petals not longer than 

 the sepals, which are streaked with red ; Western Switz- 

 erland, rare. C. procumbenSy Fr. ; racemes elongated, 

 leaves pinnatifid ; Fribourg. 



28. Senebiera, DC. 



Silicule didymous, 2-seeded ; flowers very small. Not 

 alpine. 



S. Coronopus, Poir. ; silicule deeply wrinkled ; a com- 

 mon weed. S. didyma ; silicules didymous ; occasional. 



29. Lepidium, L. 

 Sepals very small ; petals very small or o ; silicule 

 oblong, 2-4-seeded. Not alpine. 



