14 ^ TETRADYNAMI-A SILICULOSA. 
men is ovate with fcarce any ftyle, the ftigma is headed 
and plain. The hhcula is eliptico-oblong, comprefled, 
entire without any ftyle, bilocular, and the dilTepimen- 
tum is parallel with the’valves, which are concave and 
contain many Imall roundifh leeds. 
Obf. Linn. In fome the petals are bipartite to the 
ungues, in others only emarginated, in fome entire. The 
ellential charadtr confifts in the.fiiicula being of an oval, 
oblong, comprefied figure, almcfi; dellitute of a ftyle ; 
and hence is eafily diiiinguifhed from the ^ JyJJwn^ Suhi- 
laria^ and Lunaria. 
Verna. Common Whitlow-grafs with naked flems and 
leaves fomewnat ferrated. An. ylpril. 
Muralis. Specdivell-lea^oed V/hitlow-grafs with a ramofe 
ftalk, cordate, dentated leaves that iurround the flalk. 
An. June. 
hicana. Wreathen-pedded Whitlow-grafs with many hoa- 
ry leaves on the ftalk, and oblong iiliculae. Bien. May. 
L E P I D I U M. Dittander or Pepperwort. 
The cup is tetraphyllous, the leaves are ovate, con- 
cave, deciduous. 1 he flower is tetrapetalous and cruci- 
form, the petals are obovate, twice as long as the cup, 
with narrow ungues. There are fix fubulated'filaments 
the length of the cup, of which two are fhortcr than the 
red; and^all the anthers are fimple. The germen is cor- 
date, the ftyle fimple, the length of the ftamina, and 'the 
ftigma is obtufe. The filicula is fubcordate, partly e- 
marginated, compreffed, with an acute margin and is 
bilocular-, the difiepimentum is lanceolated, the valves 
navicular and keel-lhaped, containing acuminated feeds 
narrower at the bale and nodding. 
Latifolium. Dittander with ovato- lanceolated entire, 
-ferrated leaves. In meadpw^s and paftures, but not very 
common. Near the rjythe at Colchefter., and at Hayhridge 
near Maldon^ by the water-fide, plentifully, R. Sy. In 
the marfhes near Gray's \a Dr Watson. Per. June\ 
July. : . . • .r. , 
K i ' RuJerale. 
