CLASS XII. ICOSANDRIA. MONOGYNIA. PRU'NUS. Cal. beneath, five-cleft: Bloss. five petals: Drupa with an entire nut. [Crataegus.] DIGYNIA. CRATE'GUS. Cal. superior, five-cleft: Bloss. five petals: Berry (only dimpled, E.) two-seeded. [Prunus insititia.] MES'PILUS. PENTAGYNIA. 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.) SPIRE'A. Cal. beneath, five-cleft: Bloss. five petals: Pericarps three to twelve, one-celled, two-valved: Seeds one to three in each cell. E.) POLYGYNIA. RO'SA. Cal. five-cleft: Bloss. five petals: Calyx contracting so as to form a fleshy, many-seeded berry. VOL. III. |