NATURAL ARRANGEMENT. 
1067 
1514 Pong&mia f^ent. 
1513 Dalb^rgia W. 
Tribe 6. Dalbergie^. 
1515 Pteroc&rpus JV. 
1516 Ecastaphyllum Eich. 
1520 Amerimnum W- 
2124 Mim6sa W. 
2123 I'nga W. 
1543 A'rachis W. 
2155 Gleditschia W. 
2094 Gymnocladus W. 
979 Guilandina H, K. 
978 Caesalpinia H. K. 
911 Poinciana H. K. 
981 HofFmans^ggia Cav. 
Suborder II. or Tribe 7. MIMOSEM. 
2125 Schrankia W. 982 Adenanth^ra W. 
2126 Desmanthus W. 984 Prosopis iZoj;6. 
Suborder III. CJESALPINE^. 
Tribe 8. Geoffre^e. 
1517 Geoffroya W. 1464 Brownea TV. 
Tribe 9. Cassie^. 
985 HEematoxylon W. 
976 Parkinsonia JT. 
983 Cadia TV. 
2156 Cerat6nia W. 
861 Jon^sia W. 
1449 Tamarindus TV. 
974 Cassia IF. 
975 Cathartocarpus P. 5'. 
971 Afzelia Sm. 
969 SchiHia J^F. 
986 Copaifera TV. 
913 Cynom^tra TV. 
2127 Acacia TV. 
1518 Di'pterix TV. 
1519 Pariv6a 
972 Hymenaj'a TV. 
970 Bauhinia TV. 
968 Cercis /T. 
30 Codarium Vahl. 
980 Kyperanth^ra fF. 
Order LX. ROSACEiE. 
"With the exception of Chrysobalanese and Sanguisorbeee, this order is so uniform in its appearance, that 
Rosa, the type from which all the other genera are to be considered variations, when justly understood, will 
be found to contain every form of structure which is essential to the order. Having stated this, it will be at 
once obvious, that if the other genera have such close affinity to Rosa, they must also bear a great analogy in 
beauty. And this is, indeed, the fact. Amygdalus and Prunus among trees, and Potentilla, Geum, and 
others, among herbaceous genera, rival the rose in their blossoms, and, in many particulars, surpass that most 
lovely of all flowers in foliage and general appearance. But it is not for charms alone of smell, or blossom, or 
foliage, that this order has fixed itself so high in the estimation of mankind. It has also the rare merit of 
comprehending all the most important of the fruits of the temperate regions of the world. Thus the apple 
and the pear belong to Pyrus, the plum and the apricot to Prunus, the peach and the nectarine to Amygdalus ; 
Eriobotrya produces the loquat, Mespllus the medlar, and finally, the quince is borne by the Cydonia. The 
medical powers of many plants of this order are not less active than their fruit is excellent. The principal of 
these is the well-known Prussic acid, which exists in abundance in the leaves and kernels of many genera, 
especially of Prunus and Amygdalus : it is the basis of Laurel water, which, when taken in small doses, acts 
either as a violent purgative or as an emetic ; and, in stronger doses, is said to destroy irritability without 
exciting inflammation ; these properties, however, although thus dangerous in the distilled water of the laurel 
and other similar plants, can scarcely be said to exist in any important quantity in the plants in a state of 
nature. The kernel of the bitter almond, for example, in which the Prussic acid is more abundant than 
usual, is used for many culinary and other purposes without any bad effect. There are, however, cases in 
which it is said to be dangerous to eat the fresh leaves or kernels ; as in the Prunus virginiana, the leaves and 
fruit of which are reputed in the United States to be poisonous to certain animals. Besides the Prussic acid, 
there are several other principles which abound in the order. All Drupaceas yield a gum which is nearly 
allied to gum Arabic, and which affords a strong evidence of the affinity that exists between Rosacea and 
Leguminosas. A great deal of astringency is found in many species, whence diiferent parts have been 
occasionally employed as febrifuges, and as remedies for hcemorrhage, diarrhoea, and dysentery. The root of 
the TormentiUa is used for tanning in the Ferro Isles ; and that of the Capollim'cherry in Mexico. The bark 
of Pr6nus virginiana is used as a febrifuge in the United States ; Potentilla reptans has been praised for the 
same properties. The root of G^um urbanum has been found, by Milandi and Moretti, to contain one eleventh 
of its weight of tannin ; it has been used both in America and Europe as a substitute for Jesuit's bark. The 
leaves of Dryas octopetala in the north of Europe, of Rubus arcticus in Norway, of Prunus spinosa and avium, 
and of Rosa rubiginosa have been maimfactured into a sort of substitute for tea. The bark of the root of 
Gillenia trifoliata is remarkable in having, in addition to the astringency already mentioned, an emetic 
property, on which account it is employed in North America as Ipecacuanha. It is said, that a similar power 
exists in other Spirae'as. 
It must not be omitted, that the order Rosaceae nearly answers to the Icosandria of Linn£BUS. 
Tribe 1. Chrysobalane^. 
1130 ChrysobSlanus TV. 870 Parinarium Juss. 499 Hirtella TV. 1080 Grangeria Lam. 
Tribe 2. AMYCDALiNE^aj. 
1128 Amygdalus TV. 1129 Prfinus TV. 
Tribe 3, " Spir;eace^. 
1156 Kerria Dec. 1141 Spir^a TV. 1142 Gillenia Monc/i. 
Tribe 4. Neuradf.^ 
1063 Grielum TV. 
1159 Dr:fas TV. 
1161 Sieversia TV. 
1155 Geum TV. 
1160 Coluria R. Br. 
Tribe 5. 
1140 Waldsteinia TV. 
1149 Rubus TV. 
1150 Dalibarda Mick. 
1151 Fragaria TV. 
Dryade^. 
1154 TormentiUa L. 
1153 Potentilla L. 
710 Sibbaldia TV. 
1101 Agrimonia TV, 
1152 Comarum TV. 
255 Alchemilla TV. 
2.56 Sanguisorba TV. 
Tribe 6. Sanguisorbe^e. 
1190 Pot^rium TV. 
2106 ClifTortia TV. 
Tribe 7. Rosejs. 
1148 R6sa TV. 
Ancistrum L. 
1132 Cratas'gus L. 
1136 Raphiolopis Lindl. 
1135 Photinia Litidl. 
Tribe 8. Pomace;e. 
1137 Eriobotrya TJndl. 
1139 Cotoneaster Lindl. 
1138 Amelanchier Lindl. 
1131 Mespilus Lindl. 
1133 Pyrus Sm. 
1134 Cydonia Juss. 
