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1, Rhus L. 

 POISON -OAK. YEDKA. 



Polygamous. Calyx 5-parted, persistent. 

 Stamens 5. Ovary one, 1-celled, 1-ovulate; styles 

 3. Fruit a dry drupe. 



1. K. DIVERSILOBA Torr. & Gray. Flowers 

 paniculate; petals greenish. Fruit pale. T ? . 

 Common. Summer. 



2. P. AKOMATICA Ait. Flowers spicate; pe- 

 tals yellow; fruit red. ^. Livermore. Spring. 



Juice and exhalation of this shrub unlike 

 those of E. diversiloba do not produce eczema^ 

 but are entirely harmless. 



Family 3. JUGLANDE^, 



(Connecting link between Terebinthaks and Cupuliferce.) 



Flowers diclinous. <3 : amentaceous ; peri- 

 gonium adnate to the bract, and imbricate in 

 aestivation; petals 3, or its multiple. 9 : ag- 

 gregate or racemose; perianth connate with the 

 imperfectly 2-4-celled, 1-ovulate ovary; fruit 

 a 1-pyrenous drupe; pyrena of valvular dehis- 

 cence. Leaves imparipinnate, stipules 0. 

 Juglans L. WALNUT. 



$ : stamens more than six. $ flowers : few, 

 terminal; calyx 4-parted; petals 4; style 2. V . 



1. J. CALIFORNICA Watson. Very local. 

 Walnut Creek. Spring. 



