146 POPULAR FIELD BOTANY. 
IcOSANDRIA. PENTAGYNIA. 
CALYCIFLORA. ROSACE. 
CRATAGUS. (Hawrnory.) 
Generic Character. Calyx segments superior, that is, above the 
the fruit. Petals five, roundish. Fruit oval. 
CraTmGus OxyACANTHA. Hawthorn, White-thorn, or 
May. ‘verybody knows this beautiful tree, which from its 
early flowering has taken the name of May. In old times 
it was said to be always in flower by the first of the month ; 
but the first of May of the old style was twelve days later 
than at present. In the hedges, where it generally grows, it 
is but a small shrub, on account of being so often cut; but 
in parks, where it is allowed to grow to maturity, it some- 
times attains the height of thirty feet. 
PoLyANDRIA. MOoNoGyYNIA. 
THALAMIFLOR&. PAPAVERACEX. 
CHELIDONIUM. (Crtanpryz.) 
Generic Character. Calyx of two leaves, which fall off. Four 
petals. Pistil two-lobed. Pod long and narrow. Seeds numerous. 
CHELIDONIUM MaAJUS. Common Celandine. This plant 
a 
