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1. RB. sattvusL.—@©. Common all the year 
round. 
Escaped from gardens. Originally a native 
of China, now in cultivation over the whole 
earth. 
2. Thysanocarpus Hook. — 
Indehiscent silicula (samara) orbicular, 
winged, l-seeded.—©. Spring. 
1. TT. pustttus Hook. Pubescent through- 
out; cauline leaves lanceolate, sessile, but not 
clasping; silicula orbicular, hirsute.—Niles. 
2. T. Lactniatus Nutt. Cauline leaves linear, 
scarcely auricled at their clasping base; sili- 
cula obovate, slightly pubescent.—Niles. 
3. T. curvirzs Hook. Glabrous; cauline 
leaves conspicuously auricled at the clasping 
base; silicula orbicular.—Common. 
3, Senebiera Poir. 
Indehiscent silicula (schizocarp) 2-seeded. 
Seeds globose, rugose. Flowers minute, white. 
1. S. pipyma Pers.—@©. Common. Sum- 
mer. 
4, Lepidium R.Br. Prprererass. 
Silicula dorsally compressed, ovate, with ca- 
rinate valves and narrow replum. Seeds soli- 
tary in each cell, pendulous from the apex of 
the replum. 
