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1. L. DouGLASiiR. Br. Sepals glabrous; pe- 

 tals white or rose-colored, claws always yellow. 

 Siiiinyside. Summer. 



2. L. ALBA Hartweg. Sepals villous; pe- 

 tals wliite, claws yellow. — Millbrae. Summer. 



Order 4. TEREBINTIIALES. Flowers 

 regular. Calyx free. Petals 5, imbricate or 

 valvate in sestivation, not contorted, nor truly 

 convolute, inserted into a disc. Stamens 5, or 

 a multiple. Ovary 1-5 carpidia, syncarpous 

 or apocarpous; carpidia 1-2-ovulate. 



Family 1. RUTACE^. 



Stamens inserted on the external margin of 

 the disc. Carpidia more than 1-ovulate. Sti- 

 pules 0. 



1. Ptelea I-*. Hop-tree. 



Polygamous. Calyx 4-5-parted. Petals 

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

 petals. Ovary on a convex disc, 2-celled; cells 

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

 Flowers white or greenish. — h • 



1. P. ANGUSTiFOLiA Benth. — Niles. Spring. 



Family 2 TEREBINTH ACE^. (Anacardicwece). 



Stamens inserted on the inner margin of the 

 disc. Ovary 1, or if more, only one fertile; 1- 

 ovulate. Fruit indehiscent. 



