WHITE OR WHITISH FLOWERS 



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60. Same as 59, but flowers with 4 petals. 



Rock Cress {Arabis hirsuta). Mustard family. 



Ht. I ft. or over; sometimes hairy; flowers small; 

 flower-stalks upright; stem-leaves toothed, some 

 clasping. Rocks. Spring, early summer. 



Spring Cress {Cardamine rhomboidea) . Mustard family. 

 Flowers large; root-leaves rounded; stem-leaves, 

 lower egg-shaped with short stalks, upper some- 

 what lance-shaped, without stalks, all slightly 

 toothed. Wet places. Early spring-early summer. 



Bastard toad-flax {Comandra umbellata). 



61. Same as 59, but flowers with apparently 5 petals. 



Spurge {Euphorbia corollata). Spurge family. 



Max. ht. 3 ft. ; smooth or somewhat hairy ; upper 

 leaves whorled or opposite; flowers, in umbel, ap- 

 parently of 5 petals (really each is cluster of 

 flowers with white involucre) ; leaves varying from 

 egg-shaped to linear, without teeth. Rich soil. 

 Summer, autumn. Ontario, West and South. 

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