4 somewhat bell-shaped 
RUTACEALS. 423 
indehiscent drupes, exalbuminous seeds, a membranous integu- 
ment to the embryo, and by the radicle being retracted within 
thick cotyledons.” The plants of the order are intensely bitter— 
_ 80 bitter that the Ptinie, which attack all other dried specimens, 
refuse to attack Simaruba versicolor. 
The Orange (Citrus aurantium), which is at once the best 
known and most highly appreciated fruit, is a fine evergreen 
tree, originally from China, the islands of the Indian Ocean, 
and of those which are scattered over the Pacific. It is now 
largely cultivated in all the warm countries of the globe. Its 
glossy leaves are simple or compound, with one or many pairs 
of leaflets; the terminal 
ones, on winged leafy 
footstalks, are oval or 
lanceolate, and entire. 
When examined through 
a strong li¢ht these leaves 
present little bright spots, 
Which are so many ves- 
—_ Sels full of an odorous 
Volatile oil. Its flowers, 
Whose elegance and de- 
licate perfume are so well 
Own, are composed of 
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BYLINE 
yx, adhering slightly “F222 » cog0e2* 
Pt the diss: corolla with Fig. 411,—Section of an Orange. 
Ce three to five petals, broad at the base, sometimes slightly com- 
- bined, inserted on the outside of a hypogynous disk; the stamens, 
: equal in number, double or any multiple of the number, distinct 
_ © united at the base—are disposed at the summit of a peduncle 
ne hag Paucifloral bouquets. The fruit we need not describe; it is 
_ Separated by membranous divisions into many cells (Fig. 411), 
_ ‘Sentaining seeds at their inner angle; it is filled with soft and 
a : Juicy pulp, sweet and slightly acid. | 
ie vere are numerous varieties of the Orange; the best are the 
Chinese, the Maltese, the Lisbon and St. Michael’s, and, later 
-™ the season, an excellent variety comes from Valentia. The 
