24 THE FLORA OF THE ALPS 



Tribe ALYSSINE^E. Seed-vessel short (silicule), not 

 compressed or jointed ; seeds in two rows ; radicle 

 accumbent ; flowers white or yellow. Genera 18-25. 



1 8. ALYSSUM, L. 



Stem leafy; leaves entire; flowers small, white or 

 yellow; sepals equal, entire or bifid; filaments toothed 

 or winged ; seed-vessel cylindrical, few-seeded. 



A . alpestre, L. ; with small pale yellow petals, scarcely 

 longer than the sepals, and woody stem; Nicolaithal, 

 Pyrenees, Dauphiny, rare. A. Wulfenianum, Bernh. ; 

 with golden - yellow flowers and sharp teeth on the 

 filaments ; Switzerland, Tirol, Styria, Carinthia, rare. 

 A. Rochelii, Andrz. ; with golden-yellow flowers and blunt 

 filament-teeth; Carinthia, also in rocky places in the 

 Pyrenees. A. montanum, L., a shrubby plant with 

 larger yellow flowers; and A. perusianum. Gay, A. 

 spinosum, L., and A. pyrenaicum, L., with white flowers, 

 the last two spiny; Pyrenees. A. calycinum, L., flowers 

 yellow, is a weed in cultivated land. A. incanum, L. 

 (Berteroa incana, DC.); flowers white, plant grey with 

 stellate hairs ; road-sides ; Southern Switzerland, rare. 



19. COCHLEARIA, L. 



Sepals short, equal, spreading; flowers small, white; 

 seed-vessel globose, many-seeded ; filaments not toothed. 



Three species of Scurvy Grass are alpine, viz. : C. 

 saxatilis, Lam. (Kernera saxatilis, Rchb.); stem 6-8 

 in. high, diffusely branched, radical leaves obovate, 

 dentate, or lyrate, common ; C. alpina, Tausch. ; stem 



