CLASS XII. 
ICOSANDRIA. 
Ma 
MONOGYNIA. 
PRU'NUS. Cal. beneath, five-cleft: .B/oss. five petals : Dr up a 
with an entire nut. 
^Crataegus,]] 
DIGYNIA. 
CRATiE'GUS. Cal. superior, five-cleft: Bloss. five petals: 
Berry (only dimpled, E.) two-seeded. 
[Trunus insititia.] 
PENTAGYNIA. 
MES'PILUS. Cal. superior, five-cleft: Bloss . five petals: 
(Apple ( Pomum ) five-seeded, deeply concave at the top, 
E.) 
PY'RUS. Cal. superior, five-cleft: Bloss. five petals : (Fruit 
a Pomum , with two to five (generally two-seeded) cells. 
E.) 
SPIRiE'A. Cal. beneath, five-cleft: Bloss. five petals: Peri¬ 
carps three to twelve, one-celled, two-valved : Seeds one 
to three in each ceil. E.) 
POLYGYNIA. 
RO'SA. Cal. five-cleft: Bloss. five petals : Calyx contracting 
so as to form a fleshy, many-seeded berry. 
