264 



WEEDS AND USEFUL PLAXITS. 



Calyx 4-lobsd or 4-tootlied, mostly persistent, rarely obsolete. Corolla 4rCleft, or of 4 dis- 

 tinct petals — sometimes wanting ; sestiyation mostly valvate. Stamens usually 2 Frxit 

 various — baccate, drupaceous, caps.'ilar or samaroid, — 2-celled, and by abortion ofton 

 1-celled and 1 - 2-seeded. Seeds pendulous^ mostly albuminous. 



A small but interesting Order. Olives and Olive oil are afforded by the genus (Olea) 

 which is the type of the family, — the pericarp, instead of the seed, yielding the oil. The 

 Manna of the shops is derived from a species of Ash. 



Fig. lU. A branch of Enslenia albida. 



