VASCULAR PLANTS. 85 



l. Limnanthes, R. Br. 



Calyx 5-parted. Petals 5, cuneiform. Ovaries 

 5. Fruit 5, rugose akenes. 



0. flowers yellow, white, rose. 



ORDER XVI. TEREBINTHINALES. 



Flowers regular. Calyx free. Petals 5, im- 

 bricate or valvate in aestivation, not contorted, 

 nor truly convolute, inserted into a disk. Sta- 

 mens 5, or a multiple. Ovary 1 — 5 carpidia, 

 syncarpous, or apocarpous; carpidia 1 — 2-ovu- 

 late. 



Family L. Rutaceae. 



St imens inserted on the external margin of 

 the disk. Carpidia more than 1-ovulate. Stip- 

 ules 0. 



i. Ptelea, L, 



Polygamous. Calyx 4 or 5-parted. Petals 4 

 or 5. Stamens 4 or 5, alternate with the petals. 

 Ovary on a convex disk, 2 locular; loculi 2-ovu- 

 late; style 1. Fruit a 2-seeded samara. 



t? . flowers white. 



Family Li. Terebinthaceae. 



Stamens inserted on the inner margin of the 

 disk. Ovary 1. or if more, only 1 fertile; 1-ovu- 

 late. Fruit indehiscent. 



