4-J 
Tetrandria u 
"CLASS IV. 
TETRANDRIA. 
The plants belonging to this class have four stamens, 
and are divided into three orders. 
Order I. Monogynia. 
DipsacltSj Gen. char. — Common calyx many-leav- 
ed, foliaceous ; proper calyx superior, one leaved, down 
cup-formed. 
Dip. Fullonum, Cultivated or Fuller’s Teasel ; leaves 
connate, or united at the base, the chaff bent back, in- 
volucrum reflexed. This fine plant, which grows to 
the height of five feet, is biennial; flowers in July, and 
is cultivated on account of its heads, which are em- 
ployed in the woollen manufactures to raise the nap of 
cloth. 
Dip. Sylvestris , Wild-teasel ; leaves opposite, serra- 
ted, chaff' straight, involuCrum bent inwards, and longer 
than the head ; a smaller plant than the preceding ; 
biennial ; flowers in July, and grows in moist hedges 
and way-sides in England. 
Scabiosa. Gen. char . — Common cal. many leav- 
ed ; proper cal. superior, double ; receptacle, chaffy, 
or naked. 
Scab. Succisa , Devils-bit Scabious ; florets quadrifid, 
equal, stem-leaves toothed, flowers nearly globular. 
