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3. E. LEPTOCEEA Engelm. Glands of the in- 

 volucre crescent-shaped, without colored mar- 

 gin; cauline leaves scattered, those of the 

 branchlets opposite . . Common. Summer. 



4. E. LATHYEIS L. Glands of the involucre 

 crescent-shaped, without colored margin; 

 leaves all opposite. 00. Common. Sum- 

 mer. 



Poisonous plant introduced from Europe 

 and found everywhere. The seeds contain an 

 oil analogous to that of croton. This plant 

 is said to drive away or kill rats, as also the 

 castor-oil plant. Ricinus communis. 



ORDER 2. MAL VALES. Flowers regular. 

 Calyx free, 5 -parted, valvate in aestivation. 

 Corolla 5-parted, contorted in aestivation. Sta- 

 mens often monadelphous. Carpidia several, 

 free, or connate with the central axis into an 

 oo -celled ovary. Leaves alternate, stipulate. 



Family 1, MALVACEAE, 



Claws of petals united with each other, and 

 with the column of oo, monadelphous stamens. 

 Anthers reniform, 1-celled. 



1. Lavatera L- TREE MALLOW. 



Involucre 3-6-cleft. Ovaries oo, verticil- 

 late; 1-ovulate. Style 1, springing from the 

 central axis; stigmas GO. filiform. Fruit a 

 schizocarp; seeds ascending. 



