‘ 
ROSACEA 
SILVA OF NORTH AMERICA. 
PRUNUS. 
Fiowers perfect, or rarely polygamo-dicecious by abortion; calyx 5-lobed, the 
lobes imbricated in estivation; petals 5, imbricated in estivation, rarely wanting ; 
stamens 15 to 30; pistil 1, rarely 2 or more; ovules 2, suspended. Fruit a more 
or less fleshy drupe, 1-seeded. Leaves alternate. 
Prunus, Bentham & Hooker, Gen. i. 609.— Baillon, Hist. 
P1478. 
Amygdalus, Linneus, Gen. 141.— Adanson, Fam. Pl. ii. 
305.— A. L. de Jussieu, Gen. 341.— Meisner, Gen. 102. — 
Endlicher, Gen. 1250. 
Prunus, Linneus, Gen. 141. — Adanson, Fam. Pl. ii. 305.— 
A. L. de Jussieu, Gen. 341. — Meisner, Gen. 102. — End- 
licher, Gen. 1250. 
Cerasus, Linnzus, Gen. 141. — Adanson, Fam. PI. ii. 305.— 
A. L. de Jussieu, Gen. 340. — Meisner, Gen. 102. 
Padus, Linneeus, Gen. 142. 
Armeniaca, A. L. de Jussieu, Gen. 341. — Meisner, Gen. 102. 
Amyegdalophora, Necker, Hlem. Bot. ii. 70. 
Trichocarpus, Necker, Elem. Bot. ii. 70. 
Prunophora, Necker, Hlem. Bot. ii. 71. 
Cerasophora, Necker, Hlem. Bot. ii. T1. 
Chimanthus, Rafinesque, Fl. Ludovic. 26. 
Persica, Meisner, Gen. 102. 
Ceraseidos, Siebold & Zuccarini, Abhand. Akad. Miinch. 
ii. 743. 
Amygdalopsis, Roemer, Fam. Nat. Syn. iii. 15. 
Laurocerasus, Roemer, Fam. Nat. Syn. iii. 89 
Microcerasus, Roemer, Fam. Nat. Syn. iii. 93. 
Emplectocladus, Torrey, Smithsonian Contrib. vi. 10, t. 5 
(Pl. Fremont.). 
Tubopadus, Pomel, Mat. pour la Flore Atlant. 8. 
Trees or shrubs, with bitter and astringent properties, and scaly buds with scales imbricated mm 
many rows, those of the inner rows accrescent and often colored. Leaves conduplicate or convolute in 
vernation, alternate, simple, usually serrate, petiolate, deciduous or persistent; stipules free from the 
petiole, usually lanceolate and glandular, often minute, deciduous. Flowers solitary or in fascicled 
corymbs or racemes, appearing from separate buds before, coetaneous with, or later than, the leaves, 
or on leafy branches. Calyx five-lobed, ebracteolate, the tube obconic, urseolate, or tubular, deciduous 
or rarely persistent. Disk thin, adnate to the calyx-tube, glandular, often colored. Petals white or 
rose-colored, inserted in the mouth of the calyx-tube on the margin of the disk, deciduous or rarely 
wanting. Stamens usually fifteen to twenty, inserted with the petals in three rows, those of the 
outer row ten, parapetalous, those of the next row opposite the sepals and alternate with those of the 
inner row; or sometimes thirty in three rows; filaments filiform, free, incurved in the bud; anthers 
oval, attached on the back, introrse, two-celled, the cells opening longitudinally. Gynccium unicarpel- 
late, or rarely composed of two or more carpels, rarely suppressed by abortion ; ovary inserted in the 
bottom of the calyx-tube, one-celled ; style terminal, dilated at the apex into a truncate stigma; ovules 
two, suspended, collateral, anatropous; raphe ventral, the micropyle superior. Fruit drupaceous ; 
epicarp membranaceous, often glaucous or velutinous ; mesocarp pulpy, or dry and coriaceous and 
two-valved ; putamen bony, smooth, rugose, or foraminulose, compressed, indehiscent, one or rarely two- 
seeded. Seed suspended; testa thin, membranaceous; albumen thin, or usually wanting. Cotyledons 
thick and fleshy; the radicle superior. 
1 The genus Prunus may be divided into the following sections, 
which by many authors have been considered genera : — 
Amyepatus (including Amygdalophora, Trichocarpus, Persica, 
and Amygdalopsis). Flowers solitary or -geminate, subsessile, often 
precocious. Fruit velutinous or rarely smooth ; the flesh dry and 
membranaceous and splitting irregularly, or thick and succulent ; 
the stone compressed, generally thick-walled, rugose and deeply 
pitted. Leaves conduplicate in yvernation. 
Empiectociapus. Flowers solitary or geminate, short-pedicel- 
late, appearing with the leaves. Fruit velutinous, with thin dry 
flesh, and a smooth or slightly rugose stone. Leaves conduplicate 
in vernation. 
ARMENIACA. Flowers solitary or geminate, subsessile or short- 
pedicellate, precocious. Fruit pubeseent, or in cultivation rarely 
smooth, with succulent flesh, and a thick lled 
ly wing- 
margined smooth or pitted stone. Leaves convolute in vernation. 
Prunus (including Prunophora). Flowers pedicellate in fascicled 
umbels, precocious or coetaneous with the leaves. Fruit more or 
