l6 WHITE TO GREEN 



A plant somewhat resembling A. Hollnvllii, but its flowers are 

 more confined to the top of the stalk. They are usually white. 



HAIRY ROCK-CRESS 



Arabis liirsiita. Mu.stard P\iniily 



Stems: erect, nearly simple, rout]jh-hairy. Leaves: in a ro.sulate cluster, 

 ovate to .spatulate, sparsely dentate : stem-leaves partly clasping by a cor- 

 date base. Flowers: white, small. Fruit: pods strictly erect, linear. 



This plant is easily distinguished from the other Rock- 

 cresses by its hairy stalks and leaves. 



DRUMMOND'S ROCK-CRESS 



Arabis Dniiniiiondii. Mustard Fami]\- 



Stems: erect. Leaves: lanceolate, sagittate. Flowers: petals white (sel- 

 dom pink), twice the length of the sepals. Fruit: pods loosely erect ; seeds 

 wing-margined. 



A handsome leafy species of Rock-cress, very abundant 

 in some localities. It has erect flat pods. 



WHITE WHITLOW-GRASS 



Diaba i in ana. Mustard Family 



Stems: hoary, pubescent. Leaves: oblong-lanceolate, nearly entire. 

 Flowers: petals notched ; style minute. Fruit: pods acute, twisted when 

 ripe, on short erect pedicels. 



A plant partaking of the aj^pearancc of a weed, and closely 

 resembling a white mustard. 



For D. alpi)ia and I), anna see Yellow to Orange Section. 



SHEPHERD'S PURSE 



Capsclla Ihdsa-pastoris. Mustard Family 



Stems: l;ranching. Leaves: mostly runcinatc-pinnalilid, cauline, lanceo- 

 late, auricled at ba.se. Flowers: small, white, in long loose racemes; 

 petals four; .sei)als four. Fruit: pods cuneate-triangular, truncate above ; 

 seeds ten or twelve in each cell. Not indigenous. 



