448 MANUAL OF NATURAL HISTORY. 



ing Elemi, Olibanum, Arabian- Frankincense, 

 Myrrh, Balm of Mecca, Balm of Gilead, 

 Bdellium, Incense-wood, &c. 

 14. Family. — Orange-plants (Citraceae). Trees or 

 shrubs, with numerous receptacles for vo- 

 latile oil; leaves alternate, articulated with 

 a usually winged petiole, dotted; calyx 3-5- 

 toothed, withering ■ petals 3-5, imbricated ; 

 stamens mostly equal to, or twice as many 

 as, the petals, distinct or combined; ovary 

 free, many-celled ; style one ; stigma slightly 

 divided ; fruit pulpy, one or more celled, 

 with a separable leathery or spongy rind, 

 with numerous receptacles of volatile oil. 

 Yield many edible and refrigerant fruits, as 

 the Orange, Lemon, Lime, Citron, Bergamot, 

 Shaddock, and Forbidden-fruit ; and among 

 their other products, are Neroli-oil, Napha- 

 water, &c. (Aurantiacece, Corr.) 



YT. OEDER.— Ekicals (Ericales). 



Flowers dichlamydeous, symmetrical in the ovary; 



stamens definite ; placentae axile ; embryo enclosed 



in abundant, fleshy albumen. 



1. Family. — Heaths (Ericaceae). Shrubs, under- 

 shrubs, or herbs ; leaves evergreen, verticil- 

 late or opposite, exstipulate; inflorescence 

 variable; calyx 4-5-cleft, persistent; corolla 

 monopetalous, 4-5-cleft ; aestivation imbri- 

 cated ; stamens definite ; anthers 2-celled, de- 

 hiscing by pores; ovary plurilocular, sur- 



