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1. K. SATivusL. — 0, Common all the year 

 round. 



Escaped from gardens. Originally a native 

 of China, now in cultivation over the whole 

 earth. 



2. Thysanocarpus HooU. 



Indehiscent siiicula (samara) orbicular, 

 winged, 1-seeded. — 0. Spring. 



1. T. PUSILLUS Hook. Pubescent through- 

 out; cauline leaves lanceolate, sessile, but not 

 clasping; siiicula orbicular, hirsute. — Niles. 



2. T. LACiNiATUsKutt. Cauline leaves linear, 

 scarcely auricled at their clasping base; siii- 

 cula obovate, slightly pubescent. — Niles. 



3. T. CUEVIPES Hook. Glabrous; cauline 

 leaves conspicuously auricled at the clasping 

 base; siiicula orbicular. — Common. 



3. Senebiera Poir. 

 Indehiscent siiicula (schizocarp) 2-seeded. 

 Seeds globose, rugose. Flowers minute, white. 

 1. S. DIDYMA Pers. — 0. Common. Sum- 

 mer. 



4. Lepidium R. Br. Peppergrass. 



Siiicula dorsally compressed, ovate, with'ca- 

 rinate valves and narrow replum. Seeds soli- 

 tary in each cell, pendulous from the apex of 

 the replum. 



